2023-05-08 03:00:55

by Jacky Huang

Subject: [PATCH v10 00/10] Introduce Nuvoton ma35d1 SoC

From: Jacky Huang <[email protected]>

This patchset adds initial support for the Nuvoton ma35d1 SoC, including
initial device tree, clock driver, reset driver, and serial driver.

This patchset cover letter is based from the initial support for Nuvoton
ma35d1 to keep tracking the version history.

This patchset had been applied to Linux kernel 6.4.0-rc1-dirty
and tested on the Nuvoton ma35d1 SOM evaluation board.

(ma35d1 information: https://www.nuvoton.com/products/microprocessors/arm-cortex-a35-mpus/)
MA35D1 porting on linux-5.10.y can be found at: https://github.com/OpenNuvoton/MPU-Family

v10:
- Change from using ARCH_NUVOTON to using ARCH_MA35. The following patch files
have been modified:
- patch 1 arch/arm64/Kconfig.platforms
- patch 2 arch/arm64/configs/defconfig
- patch 7 arch/arm64/boot/dts/nuvoton/Makefile
- patch 8 drivers/clk/Makefile
drivers/clk/nuvoton/Kconfig
drivers/clk/nuvoton/Makefile
- patch 9 drivers/reset/Kconfig
- patch 10 drivers/tty/serial/Kconfig

v9:
- Combine MAINTAINERS patch into patch 5 'dt-bindings: arm: Add initial bindings
for Nuvoton platform'
- Modify clock driver
- Use the helper function for 64-bit division
- Fixed minor issues
- Modify reset driver
- Refine coding style and add required header files
- Add spin_lock protection
- Add error return handling to the serial driver probe function

v8:
- Remove '0005-dt-bindings-mfd-syscon-Add-nuvoton-ma35d1-sys-compat.patch' as it was applied.
- Modify MAINTAINERS NUVOTON MA35 and NPCM path settings
- Remove 'syscon' from dtsi 'sys' node and modify the corresponding yaml
- Modify clock driver
- Remove the header file and move definitions into .c files.
- Use parent_data instead of parent name.
- Modify serial driver
- Modify reset driver
- Modify reset register/offset lookup table to be indexed by reset id
- Combined reset and reboot structure

v7:
- Fixed dts system-management node and compatible driver
- move 'nuvoton,npcm-gcr.yaml' from 'binding/arm/nuvoton' to 'binding/soc/nuvoton'
- In ma35d1.dtsi, create the soc node for ma35d1 SoC
- Modify the issues found in serial driver
- Modify the issues found in clock driver
- Modify the IDs of reset driver to be contiguous numbers and use lookup table
to find register offset and bit position.
- Modify MAINTAINERS NUVOTON NPCM path as npcm directory name to nuvoton

v6:
- Combine nuvoton,ma35d1-clk.yaml and nuvoton,ma35d1-clk.h into one patch
- Combine nuvoton,ma35d1-reset.yaml and nuvoton,ma35d1-reset.h into one patch
- rename Documentation/devicetree/bindings/arm/npcm directory as nuvoton
- Remove patch for adding include/linux/mfd/ma35d1-sys.h as it's not required
- Update dtsi & dts files and move board-specific nodes to dts
- Modify reset driver
- Modify serial driver, fix coding style issues
- Modify clock driver, rewrite the PLL calculation functions

v5:
- Add ARCH_NUVOTON to arm64 Kconfig
- Add ARCH_NUVOTON to defconfig
- Add the clock driver
- Add the reset driver
- Add the serial driver
- Add us to the maintainer

v4:
- patch 4/5 is a resend
- Fixed dt_binding_check errors of nuvoton,ma35d1-clk.yaml
- Modify ma35d1.dtsi
1. Add a node hxt_24m
2. Fixed the base address of gic node
3. Add clocks and clock-names to clock node
- Fixed borad binding mistakes of nuvoton.yaml

v3:
- added patch 4/5 and 5/5
- introduce CONFIG_ARCH_NUVOTON option
- add initial bindings for Nuvoton Platform boards
- fixed coding style problem of nuvoton,ma35d1-clk.h
- added CAPLL to clock-controller node
- modify the chosen node of ma35d1-evb.dts
- modify clock yaml "clk-pll-mode" to "nuvoton,clk-pll-mode"

v2:
- fixed dt_binding_check failed of nuvoton,ma35d1-clk.yaml

Jacky Huang (10):
arm64: Kconfig.platforms: Add config for Nuvoton MA35 platform
arm64: defconfig: Add support for Nuvoton MA35 family SoCs
dt-bindings: clock: nuvoton: add binding for ma35d1 clock controller
dt-bindings: reset: nuvoton: Document ma35d1 reset control
dt-bindings: arm: Add initial bindings for Nuvoton platform
dt-bindings: serial: Document ma35d1 uart controller
arm64: dts: nuvoton: Add initial ma35d1 device tree
clk: nuvoton: Add clock driver for ma35d1 clock controller
reset: Add Nuvoton ma35d1 reset driver support
tty: serial: Add Nuvoton ma35d1 serial driver support

.../bindings/arm/nuvoton/nuvoton,ma35d1.yaml | 30 +
.../npcm.yaml => nuvoton/nuvoton,npcm.yaml} | 2 +-
.../bindings/clock/nuvoton,ma35d1-clk.yaml | 63 ++
.../bindings/reset/nuvoton,ma35d1-reset.yaml | 45 +
.../serial/nuvoton,ma35d1-serial.yaml | 48 +
.../nuvoton/nuvoton,npcm-gcr.yaml} | 2 +-
MAINTAINERS | 13 +-
arch/arm64/Kconfig.platforms | 8 +
arch/arm64/boot/dts/nuvoton/Makefile | 2 +
.../boot/dts/nuvoton/ma35d1-iot-512m.dts | 56 ++
.../boot/dts/nuvoton/ma35d1-som-256m.dts | 56 ++
arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 232 +++++
arch/arm64/configs/defconfig | 1 +
drivers/clk/Makefile | 1 +
drivers/clk/nuvoton/Kconfig | 19 +
drivers/clk/nuvoton/Makefile | 4 +
drivers/clk/nuvoton/clk-ma35d1-divider.c | 140 +++
drivers/clk/nuvoton/clk-ma35d1-pll.c | 365 +++++++
drivers/clk/nuvoton/clk-ma35d1.c | 948 ++++++++++++++++++
drivers/reset/Kconfig | 6 +
drivers/reset/Makefile | 1 +
drivers/reset/reset-ma35d1.c | 234 +++++
drivers/tty/serial/Kconfig | 18 +
drivers/tty/serial/Makefile | 1 +
drivers/tty/serial/ma35d1_serial.c | 796 +++++++++++++++
.../dt-bindings/clock/nuvoton,ma35d1-clk.h | 253 +++++
.../dt-bindings/reset/nuvoton,ma35d1-reset.h | 108 ++
27 files changed, 3449 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml
rename Documentation/devicetree/bindings/arm/{npcm/npcm.yaml => nuvoton/nuvoton,npcm.yaml} (93%)
create mode 100644 Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
create mode 100644 Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
rename Documentation/devicetree/bindings/{arm/npcm/nuvoton,gcr.yaml => soc/nuvoton/nuvoton,npcm-gcr.yaml} (93%)
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
create mode 100644 drivers/clk/nuvoton/Kconfig
create mode 100644 drivers/clk/nuvoton/Makefile
create mode 100644 drivers/clk/nuvoton/clk-ma35d1-divider.c
create mode 100644 drivers/clk/nuvoton/clk-ma35d1-pll.c
create mode 100644 drivers/clk/nuvoton/clk-ma35d1.c
create mode 100644 drivers/reset/reset-ma35d1.c
create mode 100644 drivers/tty/serial/ma35d1_serial.c
create mode 100644 include/dt-bindings/clock/nuvoton,ma35d1-clk.h
create mode 100644 include/dt-bindings/reset/nuvoton,ma35d1-reset.h

--
2.34.1

2023-05-08 03:01:02

by Jacky Huang

Subject: [PATCH v10 01/10] arm64: Kconfig.platforms: Add config for Nuvoton MA35 platform

From: Jacky Huang <[email protected]>

Add ARCH_NUVOTON configuration option for Nuvoton MA35 family SoCs.

Signed-off-by: Jacky Huang <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
---
arch/arm64/Kconfig.platforms | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/arm64/Kconfig.platforms b/arch/arm64/Kconfig.platforms
index 89a0b13b058d..e28dbc477a99 100644
--- a/arch/arm64/Kconfig.platforms
+++ b/arch/arm64/Kconfig.platforms
@@ -225,6 +225,14 @@ config ARCH_S32

endif

+config ARCH_MA35
+ bool "Nuvoton MA35 Architecture"
+ select GPIOLIB
+ select PINCTRL
+ select RESET_CONTROLLER
+ help
+ This enables support for the ARMv8 based Nuvoton MA35 series SoCs.
+
config ARCH_NPCM
bool "Nuvoton NPCM Architecture"
select PINCTRL
--
2.34.1

2023-05-08 03:01:17

by Jacky Huang

Subject: [PATCH v10 03/10] dt-bindings: clock: nuvoton: add binding for ma35d1 clock controller

From: Jacky Huang <[email protected]>

Add the dt-bindings header for Nuvoton ma35d1, that gets shared
between the clock controller and clock references in the dts.
Add documentation to describe nuvoton ma35d1 clock driver.

Signed-off-by: Jacky Huang <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
.../bindings/clock/nuvoton,ma35d1-clk.yaml | 63 +++++
.../dt-bindings/clock/nuvoton,ma35d1-clk.h | 253 ++++++++++++++++++
2 files changed, 316 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
create mode 100644 include/dt-bindings/clock/nuvoton,ma35d1-clk.h

diff --git a/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml b/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
new file mode 100644
index 000000000000..8f0c43683729
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
@@ -0,0 +1,63 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/nuvoton,ma35d1-clk.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton MA35D1 Clock Controller Module
+
+maintainers:
+ - Chi-Fang Li <[email protected]>
+ - Jacky Huang <[email protected]>
+
+description: |
+ The MA35D1 clock controller generates clocks for the whole chip,
+ including system clocks and all peripheral clocks.
+
+ See also:
+ include/dt-bindings/clock/ma35d1-clk.h
+
+properties:
+ compatible:
+ items:
+ - const: nuvoton,ma35d1-clk
+
+ reg:
+ maxItems: 1
+
+ "#clock-cells":
+ const: 1
+
+ clocks:
+ maxItems: 1
+
+ nuvoton,pll-mode:
+ description:
+ A list of PLL operation mode corresponding to CAPLL, DDRPLL, APLL,
+ EPLL, and VPLL in sequential.
+ maxItems: 5
+ items:
+ enum:
+ - integer
+ - fractional
+ - spread-spectrum
+ $ref: /schemas/types.yaml#/definitions/non-unique-string-array
+
+required:
+ - compatible
+ - reg
+ - "#clock-cells"
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+
+ clock-controller@40460200 {
+ compatible = "nuvoton,ma35d1-clk";
+ reg = <0x40460200 0x100>;
+ #clock-cells = <1>;
+ clocks = <&clk_hxt>;
+ };
+...
diff --git a/include/dt-bindings/clock/nuvoton,ma35d1-clk.h b/include/dt-bindings/clock/nuvoton,ma35d1-clk.h
new file mode 100644
index 000000000000..ba2d70f776a6
--- /dev/null
+++ b/include/dt-bindings/clock/nuvoton,ma35d1-clk.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2023 Nuvoton Technologies.
+ */
+
+#ifndef __DT_BINDINGS_CLOCK_NUVOTON_MA35D1_CLK_H
+#define __DT_BINDINGS_CLOCK_NUVOTON_MA35D1_CLK_H
+
+/* external and internal oscillator clocks */
+#define HXT 0
+#define HXT_GATE 1
+#define LXT 2
+#define LXT_GATE 3
+#define HIRC 4
+#define HIRC_GATE 5
+#define LIRC 6
+#define LIRC_GATE 7
+/* PLLs */
+#define CAPLL 8
+#define SYSPLL 9
+#define DDRPLL 10
+#define APLL 11
+#define EPLL 12
+#define VPLL 13
+/* EPLL divider */
+#define EPLL_DIV2 14
+#define EPLL_DIV4 15
+#define EPLL_DIV8 16
+/* CPU clock, system clock, AXI, HCLK and PCLK */
+#define CA35CLK_MUX 17
+#define AXICLK_DIV2 18
+#define AXICLK_DIV4 19
+#define AXICLK_MUX 20
+#define SYSCLK0_MUX 21
+#define SYSCLK1_MUX 22
+#define SYSCLK1_DIV2 23
+#define HCLK0 24
+#define HCLK1 25
+#define HCLK2 26
+#define PCLK0 27
+#define PCLK1 28
+#define PCLK2 29
+#define HCLK3 30
+#define PCLK3 31
+#define PCLK4 32
+/* AXI and AHB peripheral clocks */
+#define USBPHY0 33
+#define USBPHY1 34
+#define DDR0_GATE 35
+#define DDR6_GATE 36
+#define CAN0_MUX 37
+#define CAN0_DIV 38
+#define CAN0_GATE 39
+#define CAN1_MUX 40
+#define CAN1_DIV 41
+#define CAN1_GATE 42
+#define CAN2_MUX 43
+#define CAN2_DIV 44
+#define CAN2_GATE 45
+#define CAN3_MUX 46
+#define CAN3_DIV 47
+#define CAN3_GATE 48
+#define SDH0_MUX 49
+#define SDH0_GATE 50
+#define SDH1_MUX 51
+#define SDH1_GATE 52
+#define NAND_GATE 53
+#define USBD_GATE 54
+#define USBH_GATE 55
+#define HUSBH0_GATE 56
+#define HUSBH1_GATE 57
+#define GFX_MUX 58
+#define GFX_GATE 59
+#define VC8K_GATE 60
+#define DCU_MUX 61
+#define DCU_GATE 62
+#define DCUP_DIV 63
+#define EMAC0_GATE 64
+#define EMAC1_GATE 65
+#define CCAP0_MUX 66
+#define CCAP0_DIV 67
+#define CCAP0_GATE 68
+#define CCAP1_MUX 69
+#define CCAP1_DIV 70
+#define CCAP1_GATE 71
+#define PDMA0_GATE 72
+#define PDMA1_GATE 73
+#define PDMA2_GATE 74
+#define PDMA3_GATE 75
+#define WH0_GATE 76
+#define WH1_GATE 77
+#define HWS_GATE 78
+#define EBI_GATE 79
+#define SRAM0_GATE 80
+#define SRAM1_GATE 81
+#define ROM_GATE 82
+#define TRA_GATE 83
+#define DBG_MUX 84
+#define DBG_GATE 85
+#define CKO_MUX 86
+#define CKO_DIV 87
+#define CKO_GATE 88
+#define GTMR_GATE 89
+#define GPA_GATE 90
+#define GPB_GATE 91
+#define GPC_GATE 92
+#define GPD_GATE 93
+#define GPE_GATE 94
+#define GPF_GATE 95
+#define GPG_GATE 96
+#define GPH_GATE 97
+#define GPI_GATE 98
+#define GPJ_GATE 99
+#define GPK_GATE 100
+#define GPL_GATE 101
+#define GPM_GATE 102
+#define GPN_GATE 103
+/* APB peripheral clocks */
+#define TMR0_MUX 104
+#define TMR0_GATE 105
+#define TMR1_MUX 106
+#define TMR1_GATE 107
+#define TMR2_MUX 108
+#define TMR2_GATE 109
+#define TMR3_MUX 110
+#define TMR3_GATE 111
+#define TMR4_MUX 112
+#define TMR4_GATE 113
+#define TMR5_MUX 114
+#define TMR5_GATE 115
+#define TMR6_MUX 116
+#define TMR6_GATE 117
+#define TMR7_MUX 118
+#define TMR7_GATE 119
+#define TMR8_MUX 120
+#define TMR8_GATE 121
+#define TMR9_MUX 122
+#define TMR9_GATE 123
+#define TMR10_MUX 124
+#define TMR10_GATE 125
+#define TMR11_MUX 126
+#define TMR11_GATE 127
+#define UART0_MUX 128
+#define UART0_DIV 129
+#define UART0_GATE 130
+#define UART1_MUX 131
+#define UART1_DIV 132
+#define UART1_GATE 133
+#define UART2_MUX 134
+#define UART2_DIV 135
+#define UART2_GATE 136
+#define UART3_MUX 137
+#define UART3_DIV 138
+#define UART3_GATE 139
+#define UART4_MUX 140
+#define UART4_DIV 141
+#define UART4_GATE 142
+#define UART5_MUX 143
+#define UART5_DIV 144
+#define UART5_GATE 145
+#define UART6_MUX 146
+#define UART6_DIV 147
+#define UART6_GATE 148
+#define UART7_MUX 149
+#define UART7_DIV 150
+#define UART7_GATE 151
+#define UART8_MUX 152
+#define UART8_DIV 153
+#define UART8_GATE 154
+#define UART9_MUX 155
+#define UART9_DIV 156
+#define UART9_GATE 157
+#define UART10_MUX 158
+#define UART10_DIV 159
+#define UART10_GATE 160
+#define UART11_MUX 161
+#define UART11_DIV 162
+#define UART11_GATE 163
+#define UART12_MUX 164
+#define UART12_DIV 165
+#define UART12_GATE 166
+#define UART13_MUX 167
+#define UART13_DIV 168
+#define UART13_GATE 169
+#define UART14_MUX 170
+#define UART14_DIV 171
+#define UART14_GATE 172
+#define UART15_MUX 173
+#define UART15_DIV 174
+#define UART15_GATE 175
+#define UART16_MUX 176
+#define UART16_DIV 177
+#define UART16_GATE 178
+#define RTC_GATE 179
+#define DDR_GATE 180
+#define KPI_MUX 181
+#define KPI_DIV 182
+#define KPI_GATE 183
+#define I2C0_GATE 184
+#define I2C1_GATE 185
+#define I2C2_GATE 186
+#define I2C3_GATE 187
+#define I2C4_GATE 188
+#define I2C5_GATE 189
+#define QSPI0_MUX 190
+#define QSPI0_GATE 191
+#define QSPI1_MUX 192
+#define QSPI1_GATE 193
+#define SMC0_MUX 194
+#define SMC0_DIV 195
+#define SMC0_GATE 196
+#define SMC1_MUX 197
+#define SMC1_DIV 198
+#define SMC1_GATE 199
+#define WDT0_MUX 200
+#define WDT0_GATE 201
+#define WDT1_MUX 202
+#define WDT1_GATE 203
+#define WDT2_MUX 204
+#define WDT2_GATE 205
+#define WWDT0_MUX 206
+#define WWDT1_MUX 207
+#define WWDT2_MUX 208
+#define EPWM0_GATE 209
+#define EPWM1_GATE 210
+#define EPWM2_GATE 211
+#define I2S0_MUX 212
+#define I2S0_GATE 213
+#define I2S1_MUX 214
+#define I2S1_GATE 215
+#define SSMCC_GATE 216
+#define SSPCC_GATE 217
+#define SPI0_MUX 218
+#define SPI0_GATE 219
+#define SPI1_MUX 220
+#define SPI1_GATE 221
+#define SPI2_MUX 222
+#define SPI2_GATE 223
+#define SPI3_MUX 224
+#define SPI3_GATE 225
+#define ECAP0_GATE 226
+#define ECAP1_GATE 227
+#define ECAP2_GATE 228
+#define QEI0_GATE 229
+#define QEI1_GATE 230
+#define QEI2_GATE 231
+#define ADC_DIV 232
+#define ADC_GATE 233
+#define EADC_DIV 234
+#define EADC_GATE 235
+#define CLK_MAX_IDX 236
+
+#endif /* __DT_BINDINGS_CLOCK_NUVOTON_MA35D1_CLK_H */
--
2.34.1

2023-05-08 03:02:02

by Jacky Huang

Subject: [PATCH v10 07/10] arm64: dts: nuvoton: Add initial ma35d1 device tree

From: Jacky Huang <[email protected]>

Add initial device tree support for Nuvoton ma35d1 SoC, including
cpu, clock, reset, and serial controllers.
Add reference boards som-256m and iot-512m.

Signed-off-by: Jacky Huang <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
---
arch/arm64/boot/dts/nuvoton/Makefile | 2 +
.../boot/dts/nuvoton/ma35d1-iot-512m.dts | 56 +++++
.../boot/dts/nuvoton/ma35d1-som-256m.dts | 56 +++++
arch/arm64/boot/dts/nuvoton/ma35d1.dtsi | 232 ++++++++++++++++++
4 files changed, 346 insertions(+)
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
create mode 100644 arch/arm64/boot/dts/nuvoton/ma35d1.dtsi

diff --git a/arch/arm64/boot/dts/nuvoton/Makefile b/arch/arm64/boot/dts/nuvoton/Makefile
index a99dab90472a..3bc9787801a5 100644
--- a/arch/arm64/boot/dts/nuvoton/Makefile
+++ b/arch/arm64/boot/dts/nuvoton/Makefile
@@ -1,2 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
+dtb-$(CONFIG_ARCH_MA35) += ma35d1-iot-512m.dtb
+dtb-$(CONFIG_ARCH_MA35) += ma35d1-som-256m.dtb
dtb-$(CONFIG_ARCH_NPCM) += nuvoton-npcm845-evb.dtb
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
new file mode 100644
index 000000000000..b89e2be6abae
--- /dev/null
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1-iot-512m.dts
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Shan-Chun Hung <[email protected]>
+ * Jacky huang <[email protected]>
+ */
+
+/dts-v1/;
+#include "ma35d1.dtsi"
+
+/ {
+ model = "Nuvoton MA35D1-IoT";
+ compatible = "nuvoton,ma35d1-iot", "nuvoton,ma35d1";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ mem: memory@80000000 {
+ device_type = "memory";
+ reg = <0x00000000 0x80000000 0 0x20000000>; /* 512M DRAM */
+ };
+
+ clk_hxt: clock-hxt {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "clk_hxt";
+ };
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&clk {
+ assigned-clocks = <&clk CAPLL>,
+ <&clk DDRPLL>,
+ <&clk APLL>,
+ <&clk EPLL>,
+ <&clk VPLL>;
+ assigned-clock-rates = <800000000>,
+ <266000000>,
+ <180000000>,
+ <500000000>,
+ <102000000>;
+ nuvoton,pll-mode = "integer",
+ "fractional",
+ "integer",
+ "integer",
+ "integer";
+};
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
new file mode 100644
index 000000000000..a1ebddecb7f8
--- /dev/null
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1-som-256m.dts
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Shan-Chun Hung <[email protected]>
+ * Jacky huang <[email protected]>
+ */
+
+/dts-v1/;
+#include "ma35d1.dtsi"
+
+/ {
+ model = "Nuvoton MA35D1-SOM";
+ compatible = "nuvoton,ma35d1-som", "nuvoton,ma35d1";
+
+ aliases {
+ serial0 = &uart0;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ mem: memory@80000000 {
+ device_type = "memory";
+ reg = <0x00000000 0x80000000 0 0x10000000>; /* 256M DRAM */
+ };
+
+ clk_hxt: clock-hxt {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+ clock-output-names = "clk_hxt";
+ };
+};
+
+&uart0 {
+ status = "okay";
+};
+
+&clk {
+ assigned-clocks = <&clk CAPLL>,
+ <&clk DDRPLL>,
+ <&clk APLL>,
+ <&clk EPLL>,
+ <&clk VPLL>;
+ assigned-clock-rates = <800000000>,
+ <266000000>,
+ <180000000>,
+ <500000000>,
+ <102000000>;
+ nuvoton,pll-mode = "integer",
+ "fractional",
+ "integer",
+ "integer",
+ "integer";
+};
diff --git a/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
new file mode 100644
index 000000000000..1f1139082cb7
--- /dev/null
+++ b/arch/arm64/boot/dts/nuvoton/ma35d1.dtsi
@@ -0,0 +1,232 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Shan-Chun Hung <[email protected]>
+ * Jacky huang <[email protected]>
+ */
+
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+#include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
+
+/ {
+ compatible = "nuvoton,ma35d1";
+ interrupt-parent = <&gic>;
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ cpus {
+ #address-cells = <2>;
+ #size-cells = <0>;
+
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x0>;
+ enable-method = "psci";
+ next-level-cache = <&L2_0>;
+ };
+
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a35";
+ reg = <0x0 0x1>;
+ enable-method = "psci";
+ next-level-cache = <&L2_0>;
+ };
+
+ L2_0: l2-cache {
+ compatible = "cache";
+ cache-level = <2>;
+ };
+ };
+
+ psci {
+ compatible = "arm,psci-0.2";
+ method = "smc";
+ };
+
+ gic: interrupt-controller@50801000 {
+ compatible = "arm,gic-400";
+ reg = <0x0 0x50801000 0 0x1000>, /* GICD */
+ <0x0 0x50802000 0 0x2000>, /* GICC */
+ <0x0 0x50804000 0 0x2000>, /* GICH */
+ <0x0 0x50806000 0 0x2000>; /* GICV */
+ #interrupt-cells = <3>;
+ interrupt-parent = <&gic>;
+ interrupt-controller;
+ interrupts = <GIC_PPI 9 (GIC_CPU_MASK_RAW(0x13) |
+ IRQ_TYPE_LEVEL_HIGH)>;
+ };
+
+ timer {
+ compatible = "arm,armv8-timer";
+ interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) |
+ IRQ_TYPE_LEVEL_LOW)>, /* Physical Secure */
+ <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) |
+ IRQ_TYPE_LEVEL_LOW)>, /* Physical Non-Secure */
+ <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) |
+ IRQ_TYPE_LEVEL_LOW)>, /* Virtual */
+ <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
+ IRQ_TYPE_LEVEL_LOW)>; /* Hypervisor */
+ interrupt-parent = <&gic>;
+ };
+
+ soc {
+ compatible = "simple-bus";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ sys: system-management@40460000 {
+ compatible = "nuvoton,ma35d1-reset";
+ reg = <0x0 0x40460000 0x0 0x200>;
+ #reset-cells = <1>;
+ };
+
+ clk: clock-controller@40460200 {
+ compatible = "nuvoton,ma35d1-clk";
+ reg = <0x00000000 0x40460200 0x0 0x100>;
+ #clock-cells = <1>;
+ clocks = <&clk_hxt>;
+ };
+
+ uart0: serial@40700000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40700000 0x0 0x100>;
+ interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART0_GATE>;
+ status = "disabled";
+ };
+
+ uart1: serial@40710000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40710000 0x0 0x100>;
+ interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART1_GATE>;
+ status = "disabled";
+ };
+
+ uart2: serial@40720000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40720000 0x0 0x100>;
+ interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART2_GATE>;
+ status = "disabled";
+ };
+
+ uart3: serial@40730000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40730000 0x0 0x100>;
+ interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART3_GATE>;
+ status = "disabled";
+ };
+
+ uart4: serial@40740000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40740000 0x0 0x100>;
+ interrupts = <GIC_SPI 63 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART4_GATE>;
+ status = "disabled";
+ };
+
+ uart5: serial@40750000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40750000 0x0 0x100>;
+ interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART5_GATE>;
+ status = "disabled";
+ };
+
+ uart6: serial@40760000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40760000 0x0 0x100>;
+ interrupts = <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART6_GATE>;
+ status = "disabled";
+ };
+
+ uart7: serial@40770000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40770000 0x0 0x100>;
+ interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART7_GATE>;
+ status = "disabled";
+ };
+
+ uart8: serial@40780000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40780000 0x0 0x100>;
+ interrupts = <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART8_GATE>;
+ status = "disabled";
+ };
+
+ uart9: serial@40790000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40790000 0x0 0x100>;
+ interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART9_GATE>;
+ status = "disabled";
+ };
+
+ uart10: serial@407a0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407a0000 0x0 0x100>;
+ interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART10_GATE>;
+ status = "disabled";
+ };
+
+ uart11: serial@407b0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407b0000 0x0 0x100>;
+ interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART11_GATE>;
+ status = "disabled";
+ };
+
+ uart12: serial@407c0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407c0000 0x0 0x100>;
+ interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART12_GATE>;
+ status = "disabled";
+ };
+
+ uart13: serial@407d0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407d0000 0x0 0x100>;
+ interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART13_GATE>;
+ status = "disabled";
+ };
+
+ uart14: serial@407e0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407e0000 0x0 0x100>;
+ interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART14_GATE>;
+ status = "disabled";
+ };
+
+ uart15: serial@407f0000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x407f0000 0x0 0x100>;
+ interrupts = <GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART15_GATE>;
+ status = "disabled";
+ };
+
+ uart16: serial@40880000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x0 0x40880000 0x0 0x100>;
+ interrupts = <GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART16_GATE>;
+ status = "disabled";
+ };
+ };
+};
--
2.34.1

2023-05-08 03:03:56

by Jacky Huang

Subject: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

From: Jacky Huang <[email protected]>

This adds UART and console driver for Nuvoton ma35d1 Soc.
It supports full-duplex communication, FIFO control, and
hardware flow control.

Signed-off-by: Jacky Huang <[email protected]>
---
drivers/tty/serial/Kconfig | 18 +
drivers/tty/serial/Makefile | 1 +
drivers/tty/serial/ma35d1_serial.c | 796 +++++++++++++++++++++++++++++
3 files changed, 815 insertions(+)
create mode 100644 drivers/tty/serial/ma35d1_serial.c

diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
index 398e5aac2e77..85ac6fc1ff1d 100644
--- a/drivers/tty/serial/Kconfig
+++ b/drivers/tty/serial/Kconfig
@@ -1555,6 +1555,24 @@ config SERIAL_SUNPLUS_CONSOLE
you can alter that using a kernel command line option such as
"console=ttySUPx".

+config SERIAL_NUVOTON_MA35D1
+ tristate "Nuvoton MA35D1 family UART support"
+ depends on ARCH_MA35 || COMPILE_TEST
+ select SERIAL_CORE
+ help
+ This driver supports Nuvoton MA35D1 family UART ports. If you would
+ like to use them, you must answer Y or M to this option. Note that
+ for use as console, it must be included in kernel and not as a
+ module
+
+config SERIAL_NUVOTON_MA35D1_CONSOLE
+ bool "Console on a Nuvotn MA35D1 family UART port"
+ depends on SERIAL_NUVOTON_MA35D1=y
+ select SERIAL_CORE_CONSOLE
+ help
+ Select this options if you'd like to use the UART port0 of the
+ Nuvoton MA35D1 family as a console.
+
endmenu

config SERIAL_MCTRL_GPIO
diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
index cd9afd9e3018..0e823851c42c 100644
--- a/drivers/tty/serial/Makefile
+++ b/drivers/tty/serial/Makefile
@@ -93,3 +93,4 @@ obj-$(CONFIG_SERIAL_MCTRL_GPIO) += serial_mctrl_gpio.o

obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o
obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
+obj-$(CONFIG_SERIAL_NUVOTON_MA35D1) += ma35d1_serial.o
diff --git a/drivers/tty/serial/ma35d1_serial.c b/drivers/tty/serial/ma35d1_serial.c
new file mode 100644
index 000000000000..4eca34ba01c9
--- /dev/null
+++ b/drivers/tty/serial/ma35d1_serial.c
@@ -0,0 +1,796 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * MA35D1 serial driver
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include <linux/serial_core.h>
+#include <linux/slab.h>
+#include <linux/tty_flip.h>
+
+#define UART_NR 17
+
+#define UART_REG_RBR 0x00
+#define UART_REG_THR 0x00
+#define UART_REG_IER 0x04
+#define UART_REG_FCR 0x08
+#define UART_REG_LCR 0x0C
+#define UART_REG_MCR 0x10
+#define UART_REG_MSR 0x14
+#define UART_REG_FSR 0x18
+#define UART_REG_ISR 0x1C
+#define UART_REG_TOR 0x20
+#define UART_REG_BAUD 0x24
+#define UART_REG_ALTCTL 0x2C
+#define UART_FUN_SEL 0x30
+#define UART_REG_WKCTL 0x40
+#define UART_REG_WKSTS 0x44
+
+/* UART_REG_IER - Interrupt Enable Register */
+#define IER_RDA_IEN BIT(0) /* RBR Available Interrupt Enable */
+#define IER_THRE_IEN BIT(1) /* THR Empty Interrupt Enable */
+#define IER_RLS_IEN BIT(2) /* RX Line Status Interrupt Enable */
+#define IER_RTO_IEN BIT(4) /* RX Time-out Interrupt Enable */
+#define IER_BUFERR_IEN BIT(5) /* Buffer Error Interrupt Enable */
+#define IER_TIME_OUT_EN BIT(11) /* RX Buffer Time-out Counter Enable */
+#define IER_AUTO_RTS BIT(12) /* nRTS Auto-flow Control Enable */
+#define IER_AUTO_CTS BIT(13) /* nCTS Auto-flow Control Enable */
+
+/* UART_REG_FCR - FIFO Control Register */
+#define FCR_RFR BIT(1) /* RX Field Software Reset */
+#define FCR_TFR BIT(2) /* TX Field Software Reset */
+#define FCR_RFITL_MASK GENMASK(7, 4) /* RX FIFO Interrupt Trigger Level */
+#define FCR_RFITL_1BYTE FIELD_PREP(FCR_RFITL_MASK, 0)
+#define FCR_RFITL_4BYTES FIELD_PREP(FCR_RFITL_MASK, 1)
+#define FCR_RFITL_8BYTES FIELD_PREP(FCR_RFITL_MASK, 2)
+#define FCR_RFITL_14BYTES FIELD_PREP(FCR_RFITL_MASK, 3)
+#define FCR_RFITL_30BYTES FIELD_PREP(FCR_RFITL_MASK, 4)
+#define FCR_RTSTRGLV_MASK GENMASK(19, 16) /* nRTS Trigger Level */
+#define FCR_RTSTRGLV_1BYTE FIELD_PREP(FCR_RTSTRGLV_MASK, 0)
+#define FCR_RTSTRGLV_4BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 1)
+#define FCR_RTSTRGLV_8BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 2)
+#define FCR_RTSTRGLV_14BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 3)
+#define FCR_RTSTRGLVL_30BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 4)
+
+/* UART_REG_LCR - Line Control Register */
+#define LCR_NSB BIT(2) /* Number of “STOP Bit” */
+#define LCR_PBE BIT(3) /* Parity Bit Enable */
+#define LCR_EPE BIT(4) /* Even Parity Enable */
+#define LCR_SPE BIT(5) /* Stick Parity Enable */
+#define LCR_BREAK BIT(6) /* Break Control */
+#define LCR_WLS_MASK GENMASK(1, 0) /* Word Length Selection */
+#define LCR_WLS_5BITS FIELD_PREP(LCR_WLS_MASK, 0)
+#define LCR_WLS_6BITS FIELD_PREP(LCR_WLS_MASK, 1)
+#define LCR_WLS_7BITS FIELD_PREP(LCR_WLS_MASK, 2)
+#define LCR_WLS_8BITS FIELD_PREP(LCR_WLS_MASK, 3)
+
+/* UART_REG_MCR - Modem Control Register */
+#define MCR_RTS_CTRL BIT(1) /* nRTS Signal Control */
+#define MCR_RTSACTLV BIT(9) /* nRTS Pin Active Level */
+#define MCR_RTSSTS BIT(13) /* nRTS Pin Status (Read Only) */
+
+/* UART_REG_MSR - Modem Status Register */
+#define MSR_CTSDETF BIT(0) /* Detect nCTS State Change Flag */
+#define MSR_CTSSTS BIT(4) /* nCTS Pin Status (Read Only) */
+#define MSR_CTSACTLV BIT(8) /* nCTS Pin Active Level */
+
+/* UART_REG_FSR - FIFO Status Register */
+#define FSR_RX_OVER_IF BIT(0) /* RX Overflow Error Interrupt Flag */
+#define FSR_PEF BIT(4) /* Parity Error Flag*/
+#define FSR_FEF BIT(5) /* Framing Error Flag */
+#define FSR_BIF BIT(6) /* Break Interrupt Flag */
+#define FSR_RX_EMPTY BIT(14) /* Receiver FIFO Empty (Read Only) */
+#define FSR_RX_FULL BIT(15) /* Receiver FIFO Full (Read Only) */
+#define FSR_TX_EMPTY BIT(22) /* Transmitter FIFO Empty (Read Only) */
+#define FSR_TX_FULL BIT(23) /* Transmitter FIFO Full (Read Only) */
+#define FSR_TX_OVER_IF BIT(24) /* TX Overflow Error Interrupt Flag */
+#define FSR_TE_FLAG BIT(28) /* Transmitter Empty Flag (Read Only) */
+#define FSR_RXPTR_MSK GENMASK(13, 8) /* TX FIFO Pointer mask */
+#define FSR_TXPTR_MSK GENMASK(21, 16) /* RX FIFO Pointer mask */
+
+/* UART_REG_ISR - Interrupt Status Register */
+#define ISR_RDA_IF BIT(0) /* RBR Available Interrupt Flag */
+#define ISR_THRE_IF BIT(1) /* THR Empty Interrupt Flag */
+#define ISR_RLSIF BIT(2) /* Receive Line Interrupt Flag */
+#define ISR_MODEMIF BIT(3) /* MODEM Interrupt Flag */
+#define ISR_RXTO_IF BIT(4) /* RX Time-out Interrupt Flag */
+#define ISR_BUFEIF BIT(5) /* Buffer Error Interrupt Flag */
+#define UART_ISR_WK_IF BIT(6) /* UART Wake-up Interrupt Flag */
+#define UART_ISR_RDAINT BIT(8) /* RBR Available Interrupt Indicator */
+#define ISR_THRE_INT BIT(9) /* THR Empty Interrupt Indicator */
+#define ISR_ALL 0xFFFFFFFF
+
+/* UART_REG_BAUD - Baud Rate Divider Register */
+#define BAUD_MODE_MASK GENMASK(29, 28)
+#define BAUD_MODE0 FIELD_PREP(BAUD_MODE_MASK, 0)
+#define BAUD_MODE1 FIELD_PREP(BAUD_MODE_MASK, 2)
+#define BAUD_MODE2 FIELD_PREP(BAUD_MODE_MASK, 3)
+
+/* UART_REG_ALTCTL - Alternate Control/Status Register */
+#define ALTCTL_RS485AUD BIT(10) /* RS-485 Auto Direction Function */
+
+/* UART_FUN_SEL - Function Select Register */
+#define FUN_SEL_MASK GENMASK(2, 0)
+#define FUN_SEL_UART FIELD_PREP(FUN_SEL_MASK, 0)
+#define FUN_SEL_RS485 FIELD_PREP(FUN_SEL_MASK, 3)
+
+/* UART FIFO depth */
+#define UART_FIFO_DEPTH 32
+/* UART console clock */
+#define UART_CONSOLE_CLK 24000000
+/* UART register ioremap size */
+#define UART_REG_SIZE 0x100
+/* Rx Timeout */
+#define UART_RX_TOUT 0x40
+
+#define UART_ISR_IF_CHECK (ISR_RDA_IF | ISR_RXTO_IF | ISR_THRE_INT | ISR_BUFEIF)
+
+#define LOOP_TIMEOUT 1000
+
+static struct uart_driver ma35d1serial_reg;
+
+struct uart_ma35d1_port {
+ struct uart_port port;
+ struct clk *clk;
+ u16 capabilities; /* port capabilities */
+ u8 ier;
+ u8 lcr;
+ u8 mcr;
+ u32 baud_rate;
+ u32 console_baud_rate;
+ u32 console_line;
+ u32 console_int;
+};
+
+static struct uart_ma35d1_port ma35d1serial_ports[UART_NR];
+
+static struct uart_ma35d1_port *to_ma35d1_uart_port(struct uart_port *uart)
+{
+ return container_of(uart, struct uart_ma35d1_port, port);
+}
+
+static u32 serial_in(struct uart_ma35d1_port *p, u32 offset)
+{
+ return readl_relaxed(p->port.membase + offset);
+}
+
+static void serial_out(struct uart_ma35d1_port *p, u32 offset, u32 value)
+{
+ writel_relaxed(value, p->port.membase + offset);
+}
+
+static void __stop_tx(struct uart_ma35d1_port *p)
+{
+ u32 ier;
+
+ ier = serial_in(p, UART_REG_IER);
+ if (ier & IER_THRE_IEN)
+ serial_out(p, UART_REG_IER, ier & ~IER_THRE_IEN);
+}
+
+static void ma35d1serial_stop_tx(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ __stop_tx(up);
+}
+
+static void transmit_chars(struct uart_ma35d1_port *up)
+{
+ u32 count;
+ u8 ch;
+
+ if (uart_tx_stopped(&up->port)) {
+ ma35d1serial_stop_tx(&up->port);
+ return;
+ }
+ count = UART_FIFO_DEPTH - FIELD_GET(FSR_TXPTR_MSK, serial_in(up, UART_REG_FSR));
+ uart_port_tx_limited(&up->port, ch, count,
+ !(serial_in(up, UART_REG_FSR) & FSR_TX_FULL),
+ serial_out(up, UART_REG_THR, ch),
+ ({}));
+}
+
+static void ma35d1serial_start_tx(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 ier;
+
+ ier = serial_in(up, UART_REG_IER);
+ serial_out(up, UART_REG_IER, ier & ~IER_THRE_IEN);
+ transmit_chars(up);
+ serial_out(up, UART_REG_IER, ier | IER_THRE_IEN);
+}
+
+static void ma35d1serial_stop_rx(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ serial_out(up, UART_REG_IER, serial_in(up, UART_REG_IER) & ~IER_RDA_IEN);
+}
+
+static void receive_chars(struct uart_ma35d1_port *up)
+{
+ u8 ch, flag;
+ u32 fsr;
+ int max_count = 256;
+
+ fsr = serial_in(up, UART_REG_FSR);
+ do {
+ flag = TTY_NORMAL;
+ up->port.icount.rx++;
+
+ if (unlikely(fsr & (FSR_BIF | FSR_FEF | FSR_PEF | FSR_RX_OVER_IF))) {
+ if (fsr & FSR_BIF) {
+ up->port.icount.brk++;
+ if (uart_handle_break(&up->port))
+ continue;
+ }
+ if (fsr & FSR_FEF)
+ up->port.icount.frame++;
+ if (fsr & FSR_PEF)
+ up->port.icount.parity++;
+ if (fsr & FSR_RX_OVER_IF)
+ up->port.icount.overrun++;
+
+ serial_out(up, UART_REG_FSR, fsr &
+ (FSR_BIF | FSR_FEF | FSR_PEF | FSR_RX_OVER_IF));
+
+ if (fsr & FSR_BIF)
+ flag = TTY_BREAK;
+ else if (fsr & FSR_PEF)
+ flag = TTY_PARITY;
+ else if (fsr & FSR_FEF)
+ flag = TTY_FRAME;
+ }
+
+ ch = serial_in(up, UART_REG_RBR);
+ if (uart_handle_sysrq_char(&up->port, ch))
+ continue;
+
+ spin_lock(&up->port.lock);
+ uart_insert_char(&up->port, fsr, FSR_RX_OVER_IF, ch, flag);
+ spin_unlock(&up->port.lock);
+
+ fsr = serial_in(up, UART_REG_FSR);
+ } while (!(fsr & FSR_RX_EMPTY) && (max_count-- > 0));
+
+ spin_lock(&up->port.lock);
+ tty_flip_buffer_push(&up->port.state->port);
+ spin_unlock(&up->port.lock);
+}
+
+static irqreturn_t ma35d1serial_interrupt(int irq, void *dev_id)
+{
+ struct uart_port *port = dev_id;
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 isr, fsr;
+
+ isr = serial_in(up, UART_REG_ISR);
+ fsr = serial_in(up, UART_REG_FSR);
+
+ if (!(isr & UART_ISR_IF_CHECK))
+ return IRQ_NONE;
+
+ if (isr & (ISR_RDA_IF | ISR_RXTO_IF))
+ receive_chars(up);
+ if (isr & ISR_THRE_INT)
+ transmit_chars(up);
+ if (fsr & FSR_TX_OVER_IF)
+ serial_out(up, UART_REG_FSR, FSR_TX_OVER_IF);
+
+ return IRQ_HANDLED;
+}
+
+static u32 ma35d1serial_tx_empty(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 fsr;
+
+ fsr = serial_in(up, UART_REG_FSR);
+ return (fsr & (FSR_TE_FLAG | FSR_TX_EMPTY)) ==
+ (FSR_TE_FLAG | FSR_TX_EMPTY) ? TIOCSER_TEMT : 0;
+}
+
+static u32 ma35d1serial_get_mctrl(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 status;
+ u32 ret = 0;
+
+ status = serial_in(up, UART_REG_MSR);
+ if (!(status & MSR_CTSSTS))
+ ret |= TIOCM_CTS;
+ return ret;
+}
+
+static void ma35d1serial_set_mctrl(struct uart_port *port, u32 mctrl)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 mcr = 0;
+ u32 ier = 0;
+
+ if (mctrl & TIOCM_RTS) {
+ mcr = serial_in(up, UART_REG_MCR);
+ mcr |= MCR_RTSACTLV;
+ mcr &= ~MCR_RTS_CTRL;
+ }
+ if (up->mcr & UART_MCR_AFE) {
+ mcr = serial_in(up, UART_REG_MCR);
+ mcr |= MCR_RTSACTLV;
+ mcr &= ~MCR_RTS_CTRL;
+
+ serial_out(up, UART_REG_IER,
+ (serial_in(up, UART_REG_IER) | IER_AUTO_RTS | IER_AUTO_CTS));
+
+ up->port.flags |= UPF_HARD_FLOW;
+ } else {
+ ier = serial_in(up, UART_REG_IER);
+ ier &= ~(IER_AUTO_RTS | IER_AUTO_CTS);
+ serial_out(up, UART_REG_IER, ier);
+
+ up->port.flags &= ~UPF_HARD_FLOW;
+ }
+ serial_out(up, UART_REG_MSR, (serial_in(up, UART_REG_MSR) | MSR_CTSACTLV));
+ serial_out(up, UART_REG_MCR, mcr);
+}
+
+static void ma35d1serial_break_ctl(struct uart_port *port, int break_state)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ unsigned long flags;
+ u32 lcr;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+ lcr = serial_in(up, UART_REG_LCR);
+ if (break_state != 0)
+ lcr |= LCR_BREAK;
+ else
+ lcr &= ~LCR_BREAK;
+ serial_out(up, UART_REG_LCR, lcr);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static int ma35d1serial_startup(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ int retval;
+
+ /* Reset FIFO */
+ serial_out(up, UART_REG_FCR, FCR_TFR | FCR_RFR);
+
+ /* Clear pending interrupts */
+ serial_out(up, UART_REG_ISR, ISR_ALL);
+
+ retval = request_irq(port->irq, ma35d1serial_interrupt, 0,
+ dev_name(port->dev), port);
+ if (retval) {
+ dev_err(up->port.dev, "request irq failed.\n");
+ return retval;
+ }
+
+ serial_out(up, UART_REG_FCR, serial_in(up, UART_REG_FCR) |
+ FCR_RFITL_4BYTES | FCR_RTSTRGLV_8BYTES);
+ serial_out(up, UART_REG_LCR, LCR_WLS_8BITS);
+ serial_out(up, UART_REG_TOR, UART_RX_TOUT);
+ serial_out(up, UART_REG_IER, IER_RTO_IEN | IER_RDA_IEN |
+ IER_TIME_OUT_EN | IER_BUFERR_IEN);
+ return 0;
+}
+
+static void ma35d1serial_shutdown(struct uart_port *port)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ serial_out(up, UART_REG_IER, 0);
+ free_irq(port->irq, port);
+}
+
+static u32 ma35d1serial_get_divisor(struct uart_port *port, u32 baud)
+{
+ return (port->uartclk / baud) - 2;
+}
+
+static void ma35d1serial_set_termios(struct uart_port *port,
+ struct ktermios *termios,
+ const struct ktermios *old)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+ u32 lcr = 0;
+ unsigned long flags;
+ u32 baud, quot;
+
+ lcr = UART_LCR_WLEN(tty_get_char_size(termios->c_cflag));
+
+ if (termios->c_cflag & CSTOPB)
+ lcr |= LCR_NSB;
+ if (termios->c_cflag & PARENB)
+ lcr |= LCR_PBE;
+ if (!(termios->c_cflag & PARODD))
+ lcr |= LCR_EPE;
+ if (termios->c_cflag & CMSPAR)
+ lcr |= LCR_SPE;
+
+ baud = uart_get_baud_rate(port, termios, old, port->uartclk / 0xffff,
+ port->uartclk / 11);
+
+ quot = ma35d1serial_get_divisor(port, baud);
+
+ /*
+ * Ok, we're now changing the port state. Do it with
+ * interrupts disabled.
+ */
+ spin_lock_irqsave(&up->port.lock, flags);
+
+ up->port.read_status_mask = FSR_RX_OVER_IF;
+ if (termios->c_iflag & INPCK)
+ up->port.read_status_mask |= FSR_FEF | FSR_PEF;
+ if (termios->c_iflag & (BRKINT | PARMRK))
+ up->port.read_status_mask |= FSR_BIF;
+
+ /* Characteres to ignore */
+ up->port.ignore_status_mask = 0;
+ if (termios->c_iflag & IGNPAR)
+ up->port.ignore_status_mask |= FSR_FEF | FSR_PEF;
+ if (termios->c_iflag & IGNBRK) {
+ up->port.ignore_status_mask |= FSR_BIF;
+ /*
+ * If we're ignoring parity and break indicators,
+ * ignore overruns too (for real raw support).
+ */
+ if (termios->c_iflag & IGNPAR)
+ up->port.ignore_status_mask |= FSR_RX_OVER_IF;
+ }
+ if (termios->c_cflag & CRTSCTS)
+ up->mcr |= UART_MCR_AFE;
+ else
+ up->mcr &= ~UART_MCR_AFE;
+
+ uart_update_timeout(port, termios->c_cflag, baud);
+ ma35d1serial_set_mctrl(&up->port, up->port.mctrl);
+ serial_out(up, UART_REG_BAUD, quot | BAUD_MODE2);
+ serial_out(up, UART_REG_LCR, lcr);
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static const char *ma35d1serial_type(struct uart_port *port)
+{
+ return "ma35d1-uart";
+}
+
+static void ma35d1serial_config_port(struct uart_port *port, int flags)
+{
+ /*
+ * Driver core for serial ports forces a non-zero value for port type.
+ * Write an arbitrary value here to accommodate the serial core driver,
+ * as ID part of UAPI is redundant.
+ */
+ port->type = 1;
+}
+
+static int ma35d1serial_verify_port(struct uart_port *port,
+ struct serial_struct *ser)
+{
+ if (port->type != PORT_UNKNOWN && ser->type != 1)
+ return -EINVAL;
+
+ return 0;
+}
+
+static const struct uart_ops ma35d1serial_ops = {
+ .tx_empty = ma35d1serial_tx_empty,
+ .set_mctrl = ma35d1serial_set_mctrl,
+ .get_mctrl = ma35d1serial_get_mctrl,
+ .stop_tx = ma35d1serial_stop_tx,
+ .start_tx = ma35d1serial_start_tx,
+ .stop_rx = ma35d1serial_stop_rx,
+ .break_ctl = ma35d1serial_break_ctl,
+ .startup = ma35d1serial_startup,
+ .shutdown = ma35d1serial_shutdown,
+ .set_termios = ma35d1serial_set_termios,
+ .type = ma35d1serial_type,
+ .config_port = ma35d1serial_config_port,
+ .verify_port = ma35d1serial_verify_port,
+};
+
+static const struct of_device_id ma35d1_serial_of_match[] = {
+ { .compatible = "nuvoton,ma35d1-uart" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ma35d1_serial_of_match);
+
+#ifdef CONFIG_SERIAL_NUVOTON_MA35D1_CONSOLE
+
+static struct device_node *ma35d1serial_uart_nodes[UART_NR];
+
+static void wait_for_xmitr(struct uart_ma35d1_port *up)
+{
+ unsigned int tmout;
+
+ /* Wait up to 10ms for the character(s) to be sent. */
+ tmout = 10000;
+ while (--tmout) {
+ if (serial_in(up, UART_REG_FSR) & FSR_TX_EMPTY)
+ break;
+ udelay(1);
+ }
+}
+
+static void ma35d1serial_console_putchar(struct uart_port *port, unsigned char ch)
+{
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ wait_for_xmitr(up);
+ serial_out(up, UART_REG_THR, ch);
+}
+
+/*
+ * Print a string to the serial port trying not to disturb
+ * any possible real use of the port...
+ *
+ * The console_lock must be held when we get here.
+ */
+static void ma35d1serial_console_write(struct console *co,
+ const char *s, u32 count)
+{
+ struct uart_ma35d1_port *up = &ma35d1serial_ports[co->index];
+ unsigned long flags;
+ u32 ier;
+
+ spin_lock_irqsave(&up->port.lock, flags);
+
+ /*
+ * First save the IER then disable the interrupts
+ */
+ ier = serial_in(up, UART_REG_IER);
+ serial_out(up, UART_REG_IER, 0);
+
+ uart_console_write(&up->port, s, count, ma35d1serial_console_putchar);
+
+ wait_for_xmitr(up);
+ serial_out(up, UART_REG_IER, ier);
+
+ spin_unlock_irqrestore(&up->port.lock, flags);
+}
+
+static int __init ma35d1serial_console_setup(struct console *co,
+ char *options)
+{
+ struct device_node *np = ma35d1serial_uart_nodes[co->index];
+ struct uart_ma35d1_port *p = &ma35d1serial_ports[co->index];
+ u32 val32[4];
+ struct uart_port *port;
+ int baud = 115200;
+ int bits = 8;
+ int parity = 'n';
+ int flow = 'n';
+
+ /*
+ * Check whether an invalid uart number has been specified, and
+ * if so, search for the first available port that does have
+ * console support.
+ */
+ if ((co->index < 0) || (co->index >= UART_NR)) {
+ pr_debug("Console Port%x out of range\n", co->index);
+ return -EINVAL;
+ }
+
+ if (of_property_read_u32_array(np, "reg", val32, 4) != 0)
+ return -EINVAL;
+ p->port.iobase = val32[1];
+ p->port.membase = ioremap(p->port.iobase, UART_REG_SIZE);
+ p->port.ops = &ma35d1serial_ops;
+ p->port.line = 0;
+ p->port.uartclk = UART_CONSOLE_CLK;
+
+ port = &ma35d1serial_ports[co->index].port;
+
+ if (options)
+ uart_parse_options(options, &baud, &parity, &bits, &flow);
+
+ return uart_set_options(port, co, baud, parity, bits, flow);
+}
+
+static struct console ma35d1serial_console = {
+ .name = "ttyS",
+ .write = ma35d1serial_console_write,
+ .device = uart_console_device,
+ .setup = ma35d1serial_console_setup,
+ .flags = CON_PRINTBUFFER | CON_ENABLED,
+ .index = -1,
+ .data = &ma35d1serial_reg,
+};
+
+static void ma35d1serial_console_init_port(void)
+{
+ u32 i = 0;
+ struct device_node *np;
+
+ for_each_matching_node(np, ma35d1_serial_of_match) {
+ if (ma35d1serial_uart_nodes[i] == NULL) {
+ of_node_get(np);
+ ma35d1serial_uart_nodes[i] = np;
+ i++;
+ if (i == UART_NR)
+ break;
+ }
+ }
+}
+
+static int __init ma35d1serial_console_init(void)
+{
+ ma35d1serial_console_init_port();
+ register_console(&ma35d1serial_console);
+ return 0;
+}
+console_initcall(ma35d1serial_console_init);
+
+#define MA35D1SERIAL_CONSOLE (&ma35d1serial_console)
+#else
+#define MA35D1SERIAL_CONSOLE NULL
+#endif
+
+static struct uart_driver ma35d1serial_reg = {
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+ .dev_name = "ttyS",
+ .major = TTY_MAJOR,
+ .minor = 64,
+ .cons = MA35D1SERIAL_CONSOLE,
+ .nr = UART_NR,
+};
+
+/*
+ * Register a set of serial devices attached to a platform device.
+ * The list is terminated with a zero flags entry, which means we expect
+ * all entries to have at least UPF_BOOT_AUTOCONF set.
+ */
+static int ma35d1serial_probe(struct platform_device *pdev)
+{
+ struct resource *res_mem;
+ struct uart_ma35d1_port *up;
+ int ret = 0;
+
+ if (pdev->dev.of_node) {
+ ret = of_alias_get_id(pdev->dev.of_node, "serial");
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to get alias/pdev id, errno %d\n", ret);
+ return ret;
+ }
+ }
+ up = &ma35d1serial_ports[ret];
+ up->port.line = ret;
+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res_mem)
+ return -ENODEV;
+
+ up->port.iobase = res_mem->start;
+ up->port.membase = ioremap(up->port.iobase, UART_REG_SIZE);
+ up->port.ops = &ma35d1serial_ops;
+
+ spin_lock_init(&up->port.lock);
+
+ up->clk = of_clk_get(pdev->dev.of_node, 0);
+ if (IS_ERR(up->clk)) {
+ ret = PTR_ERR(up->clk);
+ dev_err(&pdev->dev, "failed to get core clk: %d\n", ret);
+ goto err_iounmap;
+ }
+
+ ret = clk_prepare_enable(up->clk);
+ if (ret)
+ goto err_iounmap;
+
+ if (up->port.line != 0)
+ up->port.uartclk = clk_get_rate(up->clk);
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret < 0)
+ goto err_clk_disable;
+
+ up->port.irq = ret;
+ up->port.dev = &pdev->dev;
+ up->port.flags = UPF_BOOT_AUTOCONF;
+
+ platform_set_drvdata(pdev, up);
+
+ ret = uart_add_one_port(&ma35d1serial_reg, &up->port);
+ if (ret < 0)
+ goto err_free_irq;
+
+ return 0;
+
+err_free_irq:
+ free_irq(up->port.irq, &up->port);
+
+err_clk_disable:
+ clk_disable_unprepare(up->clk);
+
+err_iounmap:
+ iounmap(up->port.membase);
+ return ret;
+}
+
+/*
+ * Remove serial ports registered against a platform device.
+ */
+static int ma35d1serial_remove(struct platform_device *dev)
+{
+ struct uart_port *port = platform_get_drvdata(dev);
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ uart_remove_one_port(&ma35d1serial_reg, port);
+ clk_disable_unprepare(up->clk);
+ return 0;
+}
+
+static int ma35d1serial_suspend(struct platform_device *dev, pm_message_t state)
+{
+ struct uart_port *port = platform_get_drvdata(dev);
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ uart_suspend_port(&ma35d1serial_reg, &up->port);
+ if (up->port.line == 0) {
+ up->console_baud_rate = serial_in(up, UART_REG_BAUD);
+ up->console_line = serial_in(up, UART_REG_LCR);
+ up->console_int = serial_in(up, UART_REG_IER);
+ }
+ return 0;
+}
+
+static int ma35d1serial_resume(struct platform_device *dev)
+{
+ struct uart_port *port = platform_get_drvdata(dev);
+ struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
+
+ if (up->port.line == 0) {
+ serial_out(up, UART_REG_BAUD, up->console_baud_rate);
+ serial_out(up, UART_REG_LCR, up->console_line);
+ serial_out(up, UART_REG_IER, up->console_int);
+ }
+ uart_resume_port(&ma35d1serial_reg, &up->port);
+ return 0;
+}
+
+static struct platform_driver ma35d1serial_driver = {
+ .probe = ma35d1serial_probe,
+ .remove = ma35d1serial_remove,
+ .suspend = ma35d1serial_suspend,
+ .resume = ma35d1serial_resume,
+ .driver = {
+ .name = "ma35d1-uart",
+ .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(ma35d1_serial_of_match),
+ },
+};
+
+static int __init ma35d1serial_init(void)
+{
+ int ret;
+
+ ret = uart_register_driver(&ma35d1serial_reg);
+ if (ret)
+ return ret;
+ ret = platform_driver_register(&ma35d1serial_driver);
+ if (ret)
+ uart_unregister_driver(&ma35d1serial_reg);
+ return ret;
+}
+
+static void __exit ma35d1serial_exit(void)
+{
+ platform_driver_unregister(&ma35d1serial_driver);
+ uart_unregister_driver(&ma35d1serial_reg);
+}
+
+module_init(ma35d1serial_init);
+module_exit(ma35d1serial_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MA35D1 serial driver");
+
--
2.34.1

2023-05-08 03:14:24

by Jacky Huang

Subject: [PATCH v10 05/10] dt-bindings: arm: Add initial bindings for Nuvoton platform

From: Jacky Huang <[email protected]>

Modify Nuvoton NPCM and MA35 platform board bindings
- Move 'nuvoton,npcm-gcr.yaml' from 'bindings/arm/npcm' to
'bindings/soc/nuvoton'.
- Rename the 'bindings/arm/npcm' directory to 'bindings/arm/nuvoton'.
- Add bindings for ARMv8-based Nuvoton SoCs and platform boards, and
include the initial bindings for ma35d1 series development boards.

Modify MAINTAINERS
- Remove the line for 'bindings/arm/npcm/' under ARM/NUVOTON NPCM, as it
has been renamed.
- Add ARM/NUVOTON MA35 for Nuvoton MA35 series SoCs maintainer and files.

Signed-off-by: Jacky Huang <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Rob Herring <[email protected]>
---
.../bindings/arm/nuvoton/nuvoton,ma35d1.yaml | 30 +++++++++++++++++++
.../npcm.yaml => nuvoton/nuvoton,npcm.yaml} | 2 +-
.../nuvoton/nuvoton,npcm-gcr.yaml} | 2 +-
MAINTAINERS | 13 +++++++-
4 files changed, 44 insertions(+), 3 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml
rename Documentation/devicetree/bindings/arm/{npcm/npcm.yaml => nuvoton/nuvoton,npcm.yaml} (93%)
rename Documentation/devicetree/bindings/{arm/npcm/nuvoton,gcr.yaml => soc/nuvoton/nuvoton,npcm-gcr.yaml} (93%)

diff --git a/Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml b/Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml
new file mode 100644
index 000000000000..fb190db61525
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/nuvoton/nuvoton,ma35d1.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton MA35 series SoC based platforms
+
+maintainers:
+ - Jacky Huang <[email protected]>
+
+description: |
+ Boards with an ARMv8 based Nuvoton MA35 series SoC shall have
+ the following properties.
+
+properties:
+ $nodename:
+ const: '/'
+ compatible:
+ oneOf:
+
+ - description: MA35D1 based boards
+ items:
+ - enum:
+ - nuvoton,ma35d1-iot
+ - nuvoton,ma35d1-som
+ - const: nuvoton,ma35d1
+
+additionalProperties: true
+...
diff --git a/Documentation/devicetree/bindings/arm/npcm/npcm.yaml b/Documentation/devicetree/bindings/arm/nuvoton/nuvoton,npcm.yaml
similarity index 93%
rename from Documentation/devicetree/bindings/arm/npcm/npcm.yaml
rename to Documentation/devicetree/bindings/arm/nuvoton/nuvoton,npcm.yaml
index 6871483947c5..d386744c8815 100644
--- a/Documentation/devicetree/bindings/arm/npcm/npcm.yaml
+++ b/Documentation/devicetree/bindings/arm/nuvoton/nuvoton,npcm.yaml
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
-$id: http://devicetree.org/schemas/arm/npcm/npcm.yaml#
+$id: http://devicetree.org/schemas/arm/nuvoton/nuvoton,npcm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: NPCM Platforms
diff --git a/Documentation/devicetree/bindings/arm/npcm/nuvoton,gcr.yaml b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-gcr.yaml
similarity index 93%
rename from Documentation/devicetree/bindings/arm/npcm/nuvoton,gcr.yaml
rename to Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-gcr.yaml
index 94e72f25b331..23e7e4ea01ff 100644
--- a/Documentation/devicetree/bindings/arm/npcm/nuvoton,gcr.yaml
+++ b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-gcr.yaml
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
-$id: http://devicetree.org/schemas/arm/npcm/nuvoton,gcr.yaml#
+$id: http://devicetree.org/schemas/soc/nuvoton/nuvoton,npcm-gcr.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Global Control Registers block in Nuvoton SoCs
diff --git a/MAINTAINERS b/MAINTAINERS
index 7e0b87d5aa2e..03b85a80b809 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2509,6 +2509,18 @@ F: drivers/rtc/rtc-ab8500.c
F: drivers/rtc/rtc-pl031.c
F: drivers/soc/ux500/

+ARM/NUVOTON MA35 ARCHITECTURE
+M: Jacky Huang <[email protected]>
+M: Shan-Chun Hung <[email protected]>
+L: [email protected] (moderated for non-subscribers)
+S: Supported
+F: Documentation/devicetree/bindings/*/*/*ma35*
+F: Documentation/devicetree/bindings/*/*ma35*
+F: arch/arm64/boot/dts/nuvoton/*ma35*
+F: drivers/*/*/*ma35*
+F: drivers/*/*ma35*
+K: ma35d1
+
ARM/NUVOTON NPCM ARCHITECTURE
M: Avi Fishman <[email protected]>
M: Tomer Maimon <[email protected]>
@@ -2520,7 +2532,6 @@ L: [email protected] (moderated for non-subscribers)
S: Supported
F: Documentation/devicetree/bindings/*/*/*npcm*
F: Documentation/devicetree/bindings/*/*npcm*
-F: Documentation/devicetree/bindings/arm/npcm/*
F: Documentation/devicetree/bindings/rtc/nuvoton,nct3018y.yaml
F: arch/arm/boot/dts/nuvoton-npcm*
F: arch/arm/mach-npcm/
--
2.34.1

2023-05-08 03:15:34

by Jacky Huang

Subject: [PATCH v10 08/10] clk: nuvoton: Add clock driver for ma35d1 clock controller

From: Jacky Huang <[email protected]>

The clock controller generates clocks for the whole chip, including
system clocks and all peripheral clocks. This driver support ma35d1
clock gating, divider, and individual PLL configuration.

There are 6 PLLs in ma35d1 SoC:
- CA-PLL for the two Cortex-A35 CPU clock
- SYS-PLL for system bus, which comes from the companion MCU
and cannot be programmed by clock controller.
- DDR-PLL for DDR
- EPLL for GMAC and GFX, Display, and VDEC IPs.
- VPLL for video output pixel clock
- APLL for SDHC, I2S audio, and other IPs.
CA-PLL has only one operation mode.
DDR-PLL, EPLL, VPLL, and APLL are advanced PLLs which have 3
operation modes: integer mode, fraction mode, and spread specturm mode.

Signed-off-by: Jacky Huang <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
---
drivers/clk/Makefile | 1 +
drivers/clk/nuvoton/Kconfig | 19 +
drivers/clk/nuvoton/Makefile | 4 +
drivers/clk/nuvoton/clk-ma35d1-divider.c | 140 ++++
drivers/clk/nuvoton/clk-ma35d1-pll.c | 365 +++++++++
drivers/clk/nuvoton/clk-ma35d1.c | 948 +++++++++++++++++++++++
6 files changed, 1477 insertions(+)
create mode 100644 drivers/clk/nuvoton/Kconfig
create mode 100644 drivers/clk/nuvoton/Makefile
create mode 100644 drivers/clk/nuvoton/clk-ma35d1-divider.c
create mode 100644 drivers/clk/nuvoton/clk-ma35d1-pll.c
create mode 100644 drivers/clk/nuvoton/clk-ma35d1.c

diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 0aebef17edc6..7cb000549b61 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -106,6 +106,7 @@ endif
obj-y += mstar/
obj-y += mvebu/
obj-$(CONFIG_ARCH_MXS) += mxs/
+obj-$(CONFIG_ARCH_MA35) += nuvoton/
obj-$(CONFIG_COMMON_CLK_NXP) += nxp/
obj-$(CONFIG_COMMON_CLK_PISTACHIO) += pistachio/
obj-$(CONFIG_COMMON_CLK_PXA) += pxa/
diff --git a/drivers/clk/nuvoton/Kconfig b/drivers/clk/nuvoton/Kconfig
new file mode 100644
index 000000000000..fe4b7f62f467
--- /dev/null
+++ b/drivers/clk/nuvoton/Kconfig
@@ -0,0 +1,19 @@
+# SPDX-License-Identifier: GPL-2.0
+# common clock support for Nuvoton SoC family.
+
+config COMMON_CLK_NUVOTON
+ bool "Nuvoton clock controller common support"
+ depends on ARCH_MA35 || COMPILE_TEST
+ default y
+ help
+ Say y here to enable common clock controller for Nuvoton platforms.
+
+if COMMON_CLK_NUVOTON
+
+config CLK_MA35D1
+ bool "Nuvoton MA35D1 clock controller support"
+ default y
+ help
+ Build the clock controller driver for MA35D1 SoC.
+
+endif
diff --git a/drivers/clk/nuvoton/Makefile b/drivers/clk/nuvoton/Makefile
new file mode 100644
index 000000000000..c3c59dd9f2aa
--- /dev/null
+++ b/drivers/clk/nuvoton/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_CLK_MA35D1) += clk-ma35d1.o
+obj-$(CONFIG_CLK_MA35D1) += clk-ma35d1-divider.o
+obj-$(CONFIG_CLK_MA35D1) += clk-ma35d1-pll.o
diff --git a/drivers/clk/nuvoton/clk-ma35d1-divider.c b/drivers/clk/nuvoton/clk-ma35d1-divider.c
new file mode 100644
index 000000000000..0d4d8186a85c
--- /dev/null
+++ b/drivers/clk/nuvoton/clk-ma35d1-divider.c
@@ -0,0 +1,140 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Chi-Fang Li <[email protected]>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/regmap.h>
+#include <linux/spinlock.h>
+
+struct ma35d1_adc_clk_div {
+ struct clk_hw hw;
+ void __iomem *reg;
+ u8 shift;
+ u8 width;
+ u32 mask;
+ const struct clk_div_table *table;
+ /* protects concurrent access to clock divider registers */
+ spinlock_t *lock;
+};
+
+struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
+ struct clk_hw *parent_hw, spinlock_t *lock,
+ unsigned long flags, void __iomem *reg,
+ u8 shift, u8 width, u32 mask_bit);
+
+static inline struct ma35d1_adc_clk_div *to_ma35d1_adc_clk_div(struct clk_hw *_hw)
+{
+ return container_of(_hw, struct ma35d1_adc_clk_div, hw);
+}
+
+static inline unsigned long ma35d1_clkdiv_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ unsigned int val;
+ struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
+
+ val = readl_relaxed(dclk->reg) >> dclk->shift;
+ val &= clk_div_mask(dclk->width);
+ val += 1;
+ return divider_recalc_rate(hw, parent_rate, val, dclk->table,
+ CLK_DIVIDER_ROUND_CLOSEST, dclk->width);
+}
+
+static inline long ma35d1_clkdiv_round_rate(struct clk_hw *hw,
+ unsigned long rate,
+ unsigned long *prate)
+{
+ struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
+
+ return divider_round_rate(hw, rate, prate, dclk->table,
+ dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
+}
+
+static inline int ma35d1_clkdiv_set_rate(struct clk_hw *hw,
+ unsigned long rate,
+ unsigned long parent_rate)
+{
+ int value;
+ unsigned long flags = 0;
+ u32 data;
+ struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
+
+ value = divider_get_val(rate, parent_rate, dclk->table,
+ dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
+
+ spin_lock_irqsave(dclk->lock, flags);
+
+ data = readl_relaxed(dclk->reg);
+ data &= ~(clk_div_mask(dclk->width) << dclk->shift);
+ data |= (value - 1) << dclk->shift;
+ data |= dclk->mask;
+ writel_relaxed(data, dclk->reg);
+
+ spin_unlock_irqrestore(dclk->lock, flags);
+ return 0;
+}
+
+static const struct clk_ops ma35d1_adc_clkdiv_ops = {
+ .recalc_rate = ma35d1_clkdiv_recalc_rate,
+ .round_rate = ma35d1_clkdiv_round_rate,
+ .set_rate = ma35d1_clkdiv_set_rate,
+};
+
+struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
+ struct clk_hw *parent_hw, spinlock_t *lock,
+ unsigned long flags, void __iomem *reg,
+ u8 shift, u8 width, u32 mask_bit)
+{
+ struct ma35d1_adc_clk_div *div;
+ struct clk_init_data init;
+ struct clk_div_table *table;
+ struct clk_parent_data pdata = { .index = 0 };
+ u32 max_div, min_div;
+ struct clk_hw *hw;
+ int ret;
+ int i;
+
+ div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
+ if (!div)
+ return ERR_PTR(-ENOMEM);
+
+ max_div = clk_div_mask(width) + 1;
+ min_div = 1;
+
+ table = devm_kcalloc(dev, max_div + 1, sizeof(*table), GFP_KERNEL);
+ if (!table)
+ return ERR_PTR(-ENOMEM);
+
+ for (i = 0; i < max_div; i++) {
+ table[i].val = min_div + i;
+ table[i].div = 2 * table[i].val;
+ }
+ table[max_div].val = 0;
+ table[max_div].div = 0;
+
+ memset(&init, 0, sizeof(init));
+ init.name = name;
+ init.ops = &ma35d1_adc_clkdiv_ops;
+ init.flags |= flags;
+ pdata.hw = parent_hw;
+ init.parent_data = &pdata;
+ init.num_parents = 1;
+
+ div->reg = reg;
+ div->shift = shift;
+ div->width = width;
+ div->mask = mask_bit ? BIT(mask_bit) : 0;
+ div->lock = lock;
+ div->hw.init = &init;
+ div->table = table;
+
+ hw = &div->hw;
+ ret = devm_clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+ return hw;
+}
+EXPORT_SYMBOL_GPL(ma35d1_reg_adc_clkdiv);
diff --git a/drivers/clk/nuvoton/clk-ma35d1-pll.c b/drivers/clk/nuvoton/clk-ma35d1-pll.c
new file mode 100644
index 000000000000..a9981db0a54a
--- /dev/null
+++ b/drivers/clk/nuvoton/clk-ma35d1-pll.c
@@ -0,0 +1,365 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Chi-Fang Li <[email protected]>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk-provider.h>
+#include <linux/container_of.h>
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/math64.h>
+#include <linux/slab.h>
+#include <linux/units.h>
+#include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+
+/* PLL frequency limits */
+#define PLL_FREF_MAX_FREQ (200 * HZ_PER_MHZ)
+#define PLL_FREF_MIN_FREQ (1 * HZ_PER_MHZ)
+#define PLL_FREF_M_MAX_FREQ (40 * HZ_PER_MHZ)
+#define PLL_FREF_M_MIN_FREQ (10 * HZ_PER_MHZ)
+#define PLL_FCLK_MAX_FREQ (2400 * HZ_PER_MHZ)
+#define PLL_FCLK_MIN_FREQ (600 * HZ_PER_MHZ)
+#define PLL_FCLKO_MAX_FREQ (2400 * HZ_PER_MHZ)
+#define PLL_FCLKO_MIN_FREQ (85700 * HZ_PER_KHZ)
+#define PLL_SS_RATE 0x77
+#define PLL_SLOPE 0x58CFA
+
+#define REG_PLL_CTL0_OFFSET 0x0
+#define REG_PLL_CTL1_OFFSET 0x4
+#define REG_PLL_CTL2_OFFSET 0x8
+
+/* bit fields for REG_CLK_PLL0CTL0, which is SMIC PLL design */
+#define SPLL0_CTL0_FBDIV GENMASK(7, 0)
+#define SPLL0_CTL0_INDIV GENMASK(11, 8)
+#define SPLL0_CTL0_OUTDIV GENMASK(13, 12)
+#define SPLL0_CTL0_PD BIT(16)
+#define SPLL0_CTL0_BP BIT(17)
+
+/* bit fields for REG_CLK_PLLxCTL0 ~ REG_CLK_PLLxCTL2, where x = 2 ~ 5 */
+#define PLL_CTL0_FBDIV GENMASK(10, 0)
+#define PLL_CTL0_INDIV GENMASK(17, 12)
+#define PLL_CTL0_MODE GENMASK(19, 18)
+#define PLL_CTL0_SSRATE GENMASK(30, 20)
+#define PLL_CTL1_PD BIT(0)
+#define PLL_CTL1_BP BIT(1)
+#define PLL_CTL1_OUTDIV GENMASK(6, 4)
+#define PLL_CTL1_FRAC GENMASK(31, 24)
+#define PLL_CTL2_SLOPE GENMASK(23, 0)
+
+#define INDIV_MIN 1
+#define INDIV_MAX 63
+#define FBDIV_MIN 16
+#define FBDIV_MAX 2047
+#define FBDIV_FRAC_MIN 1600
+#define FBDIV_FRAC_MAX 204700
+#define OUTDIV_MIN 1
+#define OUTDIV_MAX 7
+
+#define PLL_MODE_INT 0
+#define PLL_MODE_FRAC 1
+#define PLL_MODE_SS 2
+
+struct ma35d1_clk_pll {
+ struct clk_hw hw;
+ u32 id;
+ u8 mode;
+ void __iomem *ctl0_base;
+ void __iomem *ctl1_base;
+ void __iomem *ctl2_base;
+};
+
+struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
+ struct clk_hw *parent_hw, void __iomem *base);
+
+static inline struct ma35d1_clk_pll *to_ma35d1_clk_pll(struct clk_hw *_hw)
+{
+ return container_of(_hw, struct ma35d1_clk_pll, hw);
+}
+
+static unsigned long ma35d1_calc_smic_pll_freq(u32 pll0_ctl0,
+ unsigned long parent_rate)
+{
+ const u32 clk_div_table[] = { 1, 2, 4, 8 };
+ u32 m, n, p, outdiv;
+ u64 pll_freq;
+
+ if (pll0_ctl0 & SPLL0_CTL0_BP)
+ return parent_rate;
+
+ n = FIELD_GET(SPLL0_CTL0_FBDIV, pll0_ctl0);
+ m = FIELD_GET(SPLL0_CTL0_INDIV, pll0_ctl0);
+ p = FIELD_GET(SPLL0_CTL0_OUTDIV, pll0_ctl0);
+ outdiv = clk_div_table[p];
+ pll_freq = (u64)parent_rate * n;
+ div_u64(pll_freq, m * outdiv);
+ return pll_freq;
+}
+
+static unsigned long ma35d1_calc_pll_freq(u8 mode, u32 *reg_ctl, unsigned long parent_rate)
+{
+ unsigned long pll_freq, x;
+ u32 m, n, p;
+
+ if (reg_ctl[1] & PLL_CTL1_BP)
+ return parent_rate;
+
+ n = FIELD_GET(PLL_CTL0_FBDIV, reg_ctl[0]);
+ m = FIELD_GET(PLL_CTL0_INDIV, reg_ctl[0]);
+ p = FIELD_GET(PLL_CTL1_OUTDIV, reg_ctl[1]);
+
+ if (mode == PLL_MODE_INT) {
+ pll_freq = (u64)parent_rate * n;
+ div_u64(pll_freq, m * p);
+ } else {
+ x = FIELD_GET(PLL_CTL1_FRAC, reg_ctl[1]);
+ /* 2 decimal places floating to integer (ex. 1.23 to 123) */
+ n = n * 100 + ((x * 100) / FIELD_MAX(PLL_CTL1_FRAC));
+
+ /* pll_freq = parent_rate * n / 100 / m / p */
+ pll_freq = div_u64(parent_rate * n, 100 * m * p);
+ }
+ return pll_freq;
+}
+
+static int ma35d1_pll_find_closest(struct ma35d1_clk_pll *pll, unsigned long rate,
+ unsigned long parent_rate, u32 *reg_ctl,
+ unsigned long *freq)
+{
+ unsigned long min_diff = ULONG_MAX;
+ int fbdiv_min, fbdiv_max;
+ int p, m, n;
+
+ *freq = 0;
+ if (rate < PLL_FCLKO_MIN_FREQ || rate > PLL_FCLKO_MAX_FREQ)
+ return -EINVAL;
+
+ if (pll->mode == PLL_MODE_INT) {
+ fbdiv_min = FBDIV_MIN;
+ fbdiv_max = FBDIV_MAX;
+ } else {
+ fbdiv_min = FBDIV_FRAC_MIN;
+ fbdiv_max = FBDIV_FRAC_MAX;
+ }
+
+ for (m = INDIV_MIN; m <= INDIV_MAX; m++) {
+ for (n = fbdiv_min; n <= fbdiv_max; n++) {
+ for (p = OUTDIV_MIN; p <= OUTDIV_MAX; p++) {
+ unsigned long tmp, fout, fclk, diff;
+
+ tmp = div_u64(parent_rate, m);
+ if (tmp < PLL_FREF_M_MIN_FREQ ||
+ tmp > PLL_FREF_M_MAX_FREQ)
+ continue; /* constrain */
+
+ fclk = div_u64(parent_rate * n, m);
+ /* for 2 decimal places */
+ if (pll->mode != PLL_MODE_INT)
+ fclk = div_u64(fclk, 100);
+
+ if (fclk < PLL_FCLK_MIN_FREQ ||
+ fclk > PLL_FCLK_MAX_FREQ)
+ continue; /* constrain */
+
+ fout = div_u64(fclk, p);
+ if (fout < PLL_FCLKO_MIN_FREQ ||
+ fout > PLL_FCLKO_MAX_FREQ)
+ continue; /* constrain */
+
+ diff = abs(rate - fout);
+ if (diff < min_diff) {
+ reg_ctl[0] = FIELD_PREP(PLL_CTL0_INDIV, m) |
+ FIELD_PREP(PLL_CTL0_FBDIV, n);
+ reg_ctl[1] = FIELD_PREP(PLL_CTL1_OUTDIV, p);
+ *freq = fout;
+ min_diff = diff;
+ if (min_diff == 0)
+ break;
+ }
+ }
+ }
+ }
+ if (*freq == 0)
+ return -EINVAL; /* cannot find even one valid setting */
+ return 0;
+}
+
+static int ma35d1_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 reg_ctl[3] = { 0 };
+ unsigned long pll_freq;
+ int ret;
+
+ if (parent_rate < PLL_FREF_MIN_FREQ ||
+ parent_rate > PLL_FREF_MAX_FREQ)
+ return -EINVAL;
+
+ ret = ma35d1_pll_find_closest(pll, rate, parent_rate, reg_ctl, &pll_freq);
+ if (ret != 0)
+ return ret;
+
+ switch (pll->mode) {
+ case PLL_MODE_INT:
+ reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_INT);
+ break;
+ case PLL_MODE_FRAC:
+ reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_FRAC);
+ break;
+ case PLL_MODE_SS:
+ reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_SS) |
+ FIELD_PREP(PLL_CTL0_SSRATE, PLL_SS_RATE);
+ reg_ctl[2] = FIELD_PREP(PLL_CTL2_SLOPE, PLL_SLOPE);
+ break;
+ }
+ reg_ctl[1] |= PLL_CTL1_PD;
+
+ writel_relaxed(reg_ctl[0], pll->ctl0_base);
+ writel_relaxed(reg_ctl[1], pll->ctl1_base);
+ writel_relaxed(reg_ctl[2], pll->ctl2_base);
+ return 0;
+}
+
+static unsigned long ma35d1_clk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 reg_ctl[3];
+ unsigned long pll_freq;
+
+ if (parent_rate < PLL_FREF_MIN_FREQ || parent_rate > PLL_FREF_MAX_FREQ)
+ return 0;
+
+ switch (pll->id) {
+ case CAPLL:
+ reg_ctl[0] = readl_relaxed(pll->ctl0_base);
+ pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], parent_rate);
+ return pll_freq;
+ case DDRPLL:
+ case APLL:
+ case EPLL:
+ case VPLL:
+ reg_ctl[0] = readl_relaxed(pll->ctl0_base);
+ reg_ctl[1] = readl_relaxed(pll->ctl1_base);
+ pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, parent_rate);
+ return pll_freq;
+ }
+ return 0;
+}
+
+static long ma35d1_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *parent_rate)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 reg_ctl[3] = { 0 };
+ unsigned long pll_freq;
+ long ret;
+
+ if (*parent_rate < PLL_FREF_MIN_FREQ || *parent_rate > PLL_FREF_MAX_FREQ)
+ return -EINVAL;
+
+ ret = ma35d1_pll_find_closest(pll, rate, *parent_rate, reg_ctl, &pll_freq);
+ if (ret != 0)
+ return ret;
+
+ switch (pll->id) {
+ case CAPLL:
+ reg_ctl[0] = readl_relaxed(pll->ctl0_base);
+ pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], *parent_rate);
+ return pll_freq;
+ case DDRPLL:
+ case APLL:
+ case EPLL:
+ case VPLL:
+ reg_ctl[0] = readl_relaxed(pll->ctl0_base);
+ reg_ctl[1] = readl_relaxed(pll->ctl1_base);
+ pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, *parent_rate);
+ return pll_freq;
+ }
+ return 0;
+}
+
+static int ma35d1_clk_pll_is_prepared(struct clk_hw *hw)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 val = readl_relaxed(pll->ctl1_base);
+
+ return !(val & PLL_CTL1_PD);
+}
+
+static int ma35d1_clk_pll_prepare(struct clk_hw *hw)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 val;
+
+ val = readl_relaxed(pll->ctl1_base);
+ val &= ~PLL_CTL1_PD;
+ writel_relaxed(val, pll->ctl1_base);
+ return 0;
+}
+
+static void ma35d1_clk_pll_unprepare(struct clk_hw *hw)
+{
+ struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
+ u32 val;
+
+ val = readl_relaxed(pll->ctl1_base);
+ val |= PLL_CTL1_PD;
+ writel_relaxed(val, pll->ctl1_base);
+}
+
+static const struct clk_ops ma35d1_clk_pll_ops = {
+ .is_prepared = ma35d1_clk_pll_is_prepared,
+ .prepare = ma35d1_clk_pll_prepare,
+ .unprepare = ma35d1_clk_pll_unprepare,
+ .set_rate = ma35d1_clk_pll_set_rate,
+ .recalc_rate = ma35d1_clk_pll_recalc_rate,
+ .round_rate = ma35d1_clk_pll_round_rate,
+};
+
+static const struct clk_ops ma35d1_clk_fixed_pll_ops = {
+ .recalc_rate = ma35d1_clk_pll_recalc_rate,
+ .round_rate = ma35d1_clk_pll_round_rate,
+};
+
+struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
+ struct clk_hw *parent_hw, void __iomem *base)
+{
+ struct clk_parent_data pdata = { .index = 0 };
+ struct clk_init_data init = {};
+ struct ma35d1_clk_pll *pll;
+ struct clk_hw *hw;
+ int ret;
+
+ pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
+ if (!pll)
+ return ERR_PTR(-ENOMEM);
+
+ pll->id = id;
+ pll->mode = u8mode;
+ pll->ctl0_base = base + REG_PLL_CTL0_OFFSET;
+ pll->ctl1_base = base + REG_PLL_CTL1_OFFSET;
+ pll->ctl2_base = base + REG_PLL_CTL2_OFFSET;
+
+ init.name = name;
+ init.flags = 0;
+ pdata.hw = parent_hw;
+ init.parent_data = &pdata;
+ init.num_parents = 1;
+
+ if (id == CAPLL || id == DDRPLL)
+ init.ops = &ma35d1_clk_fixed_pll_ops;
+ else
+ init.ops = &ma35d1_clk_pll_ops;
+
+ pll->hw.init = &init;
+ hw = &pll->hw;
+
+ ret = devm_clk_hw_register(dev, hw);
+ if (ret)
+ return ERR_PTR(ret);
+ return hw;
+}
+EXPORT_SYMBOL_GPL(ma35d1_reg_clk_pll);
diff --git a/drivers/clk/nuvoton/clk-ma35d1.c b/drivers/clk/nuvoton/clk-ma35d1.c
new file mode 100644
index 000000000000..68fbaf2f4945
--- /dev/null
+++ b/drivers/clk/nuvoton/clk-ma35d1.c
@@ -0,0 +1,948 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Chi-Fang Li <[email protected]>
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/mfd/syscon.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/spinlock.h>
+#include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+
+static DEFINE_SPINLOCK(ma35d1_lock);
+
+#define PLL_MAX_NUM 5
+
+/* Clock Control Registers Offset */
+#define REG_CLK_PWRCTL 0x00
+#define REG_CLK_SYSCLK0 0x04
+#define REG_CLK_SYSCLK1 0x08
+#define REG_CLK_APBCLK0 0x0C
+#define REG_CLK_APBCLK1 0x10
+#define REG_CLK_APBCLK2 0x14
+#define REG_CLK_CLKSEL0 0x18
+#define REG_CLK_CLKSEL1 0x1C
+#define REG_CLK_CLKSEL2 0x20
+#define REG_CLK_CLKSEL3 0x24
+#define REG_CLK_CLKSEL4 0x28
+#define REG_CLK_CLKDIV0 0x2C
+#define REG_CLK_CLKDIV1 0x30
+#define REG_CLK_CLKDIV2 0x34
+#define REG_CLK_CLKDIV3 0x38
+#define REG_CLK_CLKDIV4 0x3C
+#define REG_CLK_CLKOCTL 0x40
+#define REG_CLK_STATUS 0x50
+#define REG_CLK_PLL0CTL0 0x60
+#define REG_CLK_PLL2CTL0 0x80
+#define REG_CLK_PLL2CTL1 0x84
+#define REG_CLK_PLL2CTL2 0x88
+#define REG_CLK_PLL3CTL0 0x90
+#define REG_CLK_PLL3CTL1 0x94
+#define REG_CLK_PLL3CTL2 0x98
+#define REG_CLK_PLL4CTL0 0xA0
+#define REG_CLK_PLL4CTL1 0xA4
+#define REG_CLK_PLL4CTL2 0xA8
+#define REG_CLK_PLL5CTL0 0xB0
+#define REG_CLK_PLL5CTL1 0xB4
+#define REG_CLK_PLL5CTL2 0xB8
+#define REG_CLK_CLKDCTL 0xC0
+#define REG_CLK_CLKDSTS 0xC4
+#define REG_CLK_CDUPB 0xC8
+#define REG_CLK_CDLOWB 0xCC
+#define REG_CLK_CKFLTRCTL 0xD0
+#define REG_CLK_TESTCLK 0xF0
+#define REG_CLK_PLLCTL 0x40
+
+#define PLL_MODE_INT 0
+#define PLL_MODE_FRAC 1
+#define PLL_MODE_SS 2
+
+struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode,
+ const char *name, struct clk_hw *parent_hw,
+ void __iomem *base);
+struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
+ struct clk_hw *hw, spinlock_t *lock,
+ unsigned long flags, void __iomem *reg,
+ u8 shift, u8 width, u32 mask_bit);
+
+static const struct clk_parent_data ca35clk_sel_clks[] = {
+ { .index = 0 }, /* HXT */
+ { .index = 1 }, /* CAPLL */
+ { .index = 2 } /* DDRPLL */
+};
+
+static const char *const sysclk0_sel_clks[] = {
+ "epll_div2", "syspll"
+};
+
+static const char *const sysclk1_sel_clks[] = {
+ "hxt", "syspll"
+};
+
+static const char *const axiclk_sel_clks[] = {
+ "capll_div2", "capll_div4"
+};
+
+static const char *const ccap_sel_clks[] = {
+ "hxt", "vpll", "apll", "syspll"
+};
+
+static const char *const sdh_sel_clks[] = {
+ "syspll", "apll", "dummy", "dummy"
+};
+
+static const char *const dcu_sel_clks[] = {
+ "epll_div2", "syspll"
+};
+
+static const char *const gfx_sel_clks[] = {
+ "epll", "syspll"
+};
+
+static const char *const dbg_sel_clks[] = {
+ "hirc", "syspll"
+};
+
+static const char *const timer0_sel_clks[] = {
+ "hxt", "lxt", "pclk0", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer1_sel_clks[] = {
+ "hxt", "lxt", "pclk0", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer2_sel_clks[] = {
+ "hxt", "lxt", "pclk1", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer3_sel_clks[] = {
+ "hxt", "lxt", "pclk1", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer4_sel_clks[] = {
+ "hxt", "lxt", "pclk2", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer5_sel_clks[] = {
+ "hxt", "lxt", "pclk2", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer6_sel_clks[] = {
+ "hxt", "lxt", "pclk0", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer7_sel_clks[] = {
+ "hxt", "lxt", "pclk0", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer8_sel_clks[] = {
+ "hxt", "lxt", "pclk1", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer9_sel_clks[] = {
+ "hxt", "lxt", "pclk1", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer10_sel_clks[] = {
+ "hxt", "lxt", "pclk2", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const timer11_sel_clks[] = {
+ "hxt", "lxt", "pclk2", "dummy", "dummy", "lirc", "dummy", "hirc"
+};
+
+static const char *const uart_sel_clks[] = {
+ "hxt", "sysclk1_div2", "dummy", "dummy"
+};
+
+static const char *const wdt0_sel_clks[] = {
+ "dummy", "lxt", "pclk3_div4096", "lirc"
+};
+
+static const char *const wdt1_sel_clks[] = {
+ "dummy", "lxt", "pclk3_div4096", "lirc"
+};
+
+static const char *const wdt2_sel_clks[] = {
+ "dummy", "lxt", "pclk4_div4096", "lirc"
+};
+
+static const char *const wwdt0_sel_clks[] = {
+ "dummy", "dummy", "pclk3_div4096", "lirc"
+};
+
+static const char *const wwdt1_sel_clks[] = {
+ "dummy", "dummy", "pclk3_div4096", "lirc"
+};
+
+static const char *const wwdt2_sel_clks[] = {
+ "dummy", "dummy", "pclk4_div4096", "lirc"
+};
+
+static const char *const spi0_sel_clks[] = {
+ "pclk1", "apll", "dummy", "dummy"
+};
+
+static const char *const spi1_sel_clks[] = {
+ "pclk2", "apll", "dummy", "dummy"
+};
+
+static const char *const spi2_sel_clks[] = {
+ "pclk1", "apll", "dummy", "dummy"
+};
+
+static const char *const spi3_sel_clks[] = {
+ "pclk2", "apll", "dummy", "dummy"
+};
+
+static const char *const qspi0_sel_clks[] = {
+ "pclk0", "apll", "dummy", "dummy"
+};
+
+static const char *const qspi1_sel_clks[] = {
+ "pclk0", "apll", "dummy", "dummy"
+};
+
+static const char *const i2s0_sel_clks[] = {
+ "apll", "sysclk1_div2", "dummy", "dummy"
+};
+
+static const char *const i2s1_sel_clks[] = {
+ "apll", "sysclk1_div2", "dummy", "dummy"
+};
+
+static const char *const can_sel_clks[] = {
+ "apll", "vpll"
+};
+
+static const char *const cko_sel_clks[] = {
+ "hxt", "lxt", "hirc", "lirc", "capll_div4", "syspll",
+ "ddrpll", "epll_div2", "apll", "vpll", "dummy", "dummy",
+ "dummy", "dummy", "dummy", "dummy"
+};
+
+static const char *const smc_sel_clks[] = {
+ "hxt", "pclk4"
+};
+
+static const char *const kpi_sel_clks[] = {
+ "hxt", "lxt"
+};
+
+static const struct clk_div_table ip_div_table[] = {
+ {0, 2}, {1, 4}, {2, 6}, {3, 8}, {4, 10},
+ {5, 12}, {6, 14}, {7, 16}, {0, 0},
+};
+
+static const struct clk_div_table eadc_div_table[] = {
+ {0, 2}, {1, 4}, {2, 6}, {3, 8}, {4, 10},
+ {5, 12}, {6, 14}, {7, 16}, {8, 18},
+ {9, 20}, {10, 22}, {11, 24}, {12, 26},
+ {13, 28}, {14, 30}, {15, 32}, {0, 0},
+};
+
+static inline struct clk_hw *ma35d1_clk_fixed(const char *name, int rate)
+{
+ return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate);
+}
+
+static inline struct clk_hw *ma35d1_clk_mux_parent(struct device *dev,
+ const char *name,
+ void __iomem *reg,
+ u8 shift, u8 width,
+ const struct clk_parent_data *pdata,
+ int num_pdata)
+{
+ return clk_hw_register_mux_parent_data(dev, name, pdata, num_pdata,
+ CLK_SET_RATE_NO_REPARENT, reg, shift,
+ width, 0, &ma35d1_lock);
+}
+
+static inline struct clk_hw *ma35d1_clk_mux(struct device *dev,
+ const char *name,
+ void __iomem *reg,
+ u8 shift, u8 width,
+ const char *const *parents,
+ int num_parents)
+{
+ return devm_clk_hw_register_mux(dev, name, parents, num_parents,
+ CLK_SET_RATE_NO_REPARENT, reg, shift,
+ width, 0, &ma35d1_lock);
+}
+
+static inline struct clk_hw *ma35d1_clk_divider(struct device *dev,
+ const char *name,
+ const char *parent,
+ void __iomem *reg, u8 shift,
+ u8 width)
+{
+ return devm_clk_hw_register_divider(dev, name, parent, CLK_SET_RATE_PARENT,
+ reg, shift, width, 0, &ma35d1_lock);
+}
+
+static inline struct clk_hw *ma35d1_clk_divider_pow2(struct device *dev,
+ const char *name,
+ const char *parent,
+ void __iomem *reg,
+ u8 shift, u8 width)
+{
+ return devm_clk_hw_register_divider(dev, name, parent,
+ CLK_DIVIDER_POWER_OF_TWO, reg, shift,
+ width, 0, &ma35d1_lock);
+}
+
+static inline struct clk_hw *ma35d1_clk_divider_table(struct device *dev,
+ const char *name,
+ const char *parent,
+ void __iomem *reg,
+ u8 shift, u8 width,
+ const struct clk_div_table *table)
+{
+ return devm_clk_hw_register_divider_table(dev, name, parent, 0,
+ reg, shift, width, 0,
+ table, &ma35d1_lock);
+}
+
+static inline struct clk_hw *ma35d1_clk_fixed_factor(struct device *dev,
+ const char *name,
+ const char *parent,
+ unsigned int mult,
+ unsigned int div)
+{
+ return devm_clk_hw_register_fixed_factor(dev, name, parent,
+ CLK_SET_RATE_PARENT, mult, div);
+}
+
+static inline struct clk_hw *ma35d1_clk_gate(struct device *dev,
+ const char *name,
+ const char *parent,
+ void __iomem *reg, u8 shift)
+{
+ return devm_clk_hw_register_gate(dev, name, parent, CLK_SET_RATE_PARENT,
+ reg, shift, 0, &ma35d1_lock);
+}
+
+static int ma35d1_get_pll_setting(struct device_node *clk_node, u32 *pllmode)
+{
+ const char *of_str;
+ int i;
+
+ for (i = 0; i < PLL_MAX_NUM; i++) {
+ if (of_property_read_string_index(clk_node, "nuvoton,pll-mode", i, &of_str))
+ return -EINVAL;
+ if (!strcmp(of_str, "integer"))
+ pllmode[i] = PLL_MODE_INT;
+ else if (!strcmp(of_str, "fractional"))
+ pllmode[i] = PLL_MODE_FRAC;
+ else if (!strcmp(of_str, "spread-spectrum"))
+ pllmode[i] = PLL_MODE_SS;
+ else
+ return -EINVAL;
+ }
+ return 0;
+}
+
+static int ma35d1_clocks_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *clk_node = pdev->dev.of_node;
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ void __iomem *clk_base;
+ static struct clk_hw **hws;
+ static struct clk_hw_onecell_data *ma35d1_hw_data;
+ u32 pllmode[PLL_MAX_NUM];
+ int ret;
+
+ ma35d1_hw_data = devm_kzalloc(dev,
+ struct_size(ma35d1_hw_data, hws, CLK_MAX_IDX),
+ GFP_KERNEL);
+ if (WARN_ON(!ma35d1_hw_data))
+ return -ENOMEM;
+
+ ma35d1_hw_data->num = CLK_MAX_IDX;
+ hws = ma35d1_hw_data->hws;
+
+ clk_base = devm_ioremap_resource(dev, res);
+ if (IS_ERR(clk_base))
+ return PTR_ERR(clk_base);
+
+ ret = ma35d1_get_pll_setting(clk_node, pllmode);
+ if (ret < 0) {
+ dev_err(dev, "Invalid PLL setting!\n");
+ return -EINVAL;
+ }
+
+ hws[HXT] = ma35d1_clk_fixed("hxt", 24000000);
+ hws[HXT_GATE] = ma35d1_clk_gate(dev, "hxt_gate", "hxt",
+ clk_base + REG_CLK_PWRCTL, 0);
+ hws[LXT] = ma35d1_clk_fixed("lxt", 32768);
+ hws[LXT_GATE] = ma35d1_clk_gate(dev, "lxt_gate", "lxt",
+ clk_base + REG_CLK_PWRCTL, 1);
+ hws[HIRC] = ma35d1_clk_fixed("hirc", 12000000);
+ hws[HIRC_GATE] = ma35d1_clk_gate(dev, "hirc_gate", "hirc",
+ clk_base + REG_CLK_PWRCTL, 2);
+ hws[LIRC] = ma35d1_clk_fixed("lirc", 32000);
+ hws[LIRC_GATE] = ma35d1_clk_gate(dev, "lirc_gate", "lirc",
+ clk_base + REG_CLK_PWRCTL, 3);
+
+ hws[CAPLL] = ma35d1_reg_clk_pll(dev, CAPLL, pllmode[0], "capll",
+ hws[HXT], clk_base + REG_CLK_PLL0CTL0);
+ hws[SYSPLL] = ma35d1_clk_fixed("syspll", 180000000);
+ hws[DDRPLL] = ma35d1_reg_clk_pll(dev, DDRPLL, pllmode[1], "ddrpll",
+ hws[HXT], clk_base + REG_CLK_PLL2CTL0);
+ hws[APLL] = ma35d1_reg_clk_pll(dev, APLL, pllmode[2], "apll",
+ hws[HXT], clk_base + REG_CLK_PLL3CTL0);
+ hws[EPLL] = ma35d1_reg_clk_pll(dev, EPLL, pllmode[3], "epll",
+ hws[HXT], clk_base + REG_CLK_PLL4CTL0);
+ hws[VPLL] = ma35d1_reg_clk_pll(dev, VPLL, pllmode[4], "vpll",
+ hws[HXT], clk_base + REG_CLK_PLL5CTL0);
+
+ hws[EPLL_DIV2] = ma35d1_clk_fixed_factor(dev, "epll_div2", "epll", 1, 2);
+ hws[EPLL_DIV4] = ma35d1_clk_fixed_factor(dev, "epll_div4", "epll", 1, 4);
+ hws[EPLL_DIV8] = ma35d1_clk_fixed_factor(dev, "epll_div8", "epll", 1, 8);
+
+ hws[CA35CLK_MUX] = ma35d1_clk_mux_parent(dev, "ca35clk_mux",
+ clk_base + REG_CLK_CLKSEL0, 0, 2,
+ ca35clk_sel_clks,
+ ARRAY_SIZE(ca35clk_sel_clks));
+ hws[AXICLK_DIV2] = ma35d1_clk_fixed_factor(dev, "capll_div2", "ca35clk_mux", 1, 2);
+ hws[AXICLK_DIV4] = ma35d1_clk_fixed_factor(dev, "capll_div4", "ca35clk_mux", 1, 4);
+
+ hws[AXICLK_MUX] = ma35d1_clk_mux(dev, "axiclk_mux", clk_base + REG_CLK_CLKDIV0,
+ 26, 1, axiclk_sel_clks,
+ ARRAY_SIZE(axiclk_sel_clks));
+ hws[SYSCLK0_MUX] = ma35d1_clk_mux(dev, "sysclk0_mux", clk_base + REG_CLK_CLKSEL0,
+ 2, 1, sysclk0_sel_clks,
+ ARRAY_SIZE(sysclk0_sel_clks));
+ hws[SYSCLK1_MUX] = ma35d1_clk_mux(dev, "sysclk1_mux", clk_base + REG_CLK_CLKSEL0,
+ 4, 1, sysclk1_sel_clks,
+ ARRAY_SIZE(sysclk1_sel_clks));
+ hws[SYSCLK1_DIV2] = ma35d1_clk_fixed_factor(dev, "sysclk1_div2", "sysclk1_mux", 1, 2);
+
+ /* HCLK0~3 & PCLK0~4 */
+ hws[HCLK0] = ma35d1_clk_fixed_factor(dev, "hclk0", "sysclk1_mux", 1, 1);
+ hws[HCLK1] = ma35d1_clk_fixed_factor(dev, "hclk1", "sysclk1_mux", 1, 1);
+ hws[HCLK2] = ma35d1_clk_fixed_factor(dev, "hclk2", "sysclk1_mux", 1, 1);
+ hws[PCLK0] = ma35d1_clk_fixed_factor(dev, "pclk0", "sysclk1_mux", 1, 1);
+ hws[PCLK1] = ma35d1_clk_fixed_factor(dev, "pclk1", "sysclk1_mux", 1, 1);
+ hws[PCLK2] = ma35d1_clk_fixed_factor(dev, "pclk2", "sysclk1_mux", 1, 1);
+
+ hws[HCLK3] = ma35d1_clk_fixed_factor(dev, "hclk3", "sysclk1_mux", 1, 2);
+ hws[PCLK3] = ma35d1_clk_fixed_factor(dev, "pclk3", "sysclk1_mux", 1, 2);
+ hws[PCLK4] = ma35d1_clk_fixed_factor(dev, "pclk4", "sysclk1_mux", 1, 2);
+
+ hws[USBPHY0] = ma35d1_clk_fixed("usbphy0", 480000000);
+ hws[USBPHY1] = ma35d1_clk_fixed("usbphy1", 480000000);
+
+ /* DDR */
+ hws[DDR0_GATE] = ma35d1_clk_gate(dev, "ddr0_gate", "ddrpll",
+ clk_base + REG_CLK_SYSCLK0, 4);
+ hws[DDR6_GATE] = ma35d1_clk_gate(dev, "ddr6_gate", "ddrpll",
+ clk_base + REG_CLK_SYSCLK0, 5);
+
+ hws[CAN0_MUX] = ma35d1_clk_mux(dev, "can0_mux", clk_base + REG_CLK_CLKSEL4,
+ 16, 1, can_sel_clks, ARRAY_SIZE(can_sel_clks));
+ hws[CAN0_DIV] = ma35d1_clk_divider_table(dev, "can0_div", "can0_mux",
+ clk_base + REG_CLK_CLKDIV0,
+ 0, 3, ip_div_table);
+ hws[CAN0_GATE] = ma35d1_clk_gate(dev, "can0_gate", "can0_div",
+ clk_base + REG_CLK_SYSCLK0, 8);
+ hws[CAN1_MUX] = ma35d1_clk_mux(dev, "can1_mux", clk_base + REG_CLK_CLKSEL4,
+ 17, 1, can_sel_clks, ARRAY_SIZE(can_sel_clks));
+ hws[CAN1_DIV] = ma35d1_clk_divider_table(dev, "can1_div", "can1_mux",
+ clk_base + REG_CLK_CLKDIV0,
+ 4, 3, ip_div_table);
+ hws[CAN1_GATE] = ma35d1_clk_gate(dev, "can1_gate", "can1_div",
+ clk_base + REG_CLK_SYSCLK0, 9);
+ hws[CAN2_MUX] = ma35d1_clk_mux(dev, "can2_mux", clk_base + REG_CLK_CLKSEL4,
+ 18, 1, can_sel_clks, ARRAY_SIZE(can_sel_clks));
+ hws[CAN2_DIV] = ma35d1_clk_divider_table(dev, "can2_div", "can2_mux",
+ clk_base + REG_CLK_CLKDIV0,
+ 8, 3, ip_div_table);
+ hws[CAN2_GATE] = ma35d1_clk_gate(dev, "can2_gate", "can2_div",
+ clk_base + REG_CLK_SYSCLK0, 10);
+ hws[CAN3_MUX] = ma35d1_clk_mux(dev, "can3_mux", clk_base + REG_CLK_CLKSEL4,
+ 19, 1, can_sel_clks, ARRAY_SIZE(can_sel_clks));
+ hws[CAN3_DIV] = ma35d1_clk_divider_table(dev, "can3_div", "can3_mux",
+ clk_base + REG_CLK_CLKDIV0,
+ 12, 3, ip_div_table);
+ hws[CAN3_GATE] = ma35d1_clk_gate(dev, "can3_gate", "can3_div",
+ clk_base + REG_CLK_SYSCLK0, 11);
+
+ hws[SDH0_MUX] = ma35d1_clk_mux(dev, "sdh0_mux", clk_base + REG_CLK_CLKSEL0,
+ 16, 2, sdh_sel_clks, ARRAY_SIZE(sdh_sel_clks));
+ hws[SDH0_GATE] = ma35d1_clk_gate(dev, "sdh0_gate", "sdh0_mux",
+ clk_base + REG_CLK_SYSCLK0, 16);
+ hws[SDH1_MUX] = ma35d1_clk_mux(dev, "sdh1_mux", clk_base + REG_CLK_CLKSEL0,
+ 18, 2, sdh_sel_clks, ARRAY_SIZE(sdh_sel_clks));
+ hws[SDH1_GATE] = ma35d1_clk_gate(dev, "sdh1_gate", "sdh1_mux",
+ clk_base + REG_CLK_SYSCLK0, 17);
+
+ hws[NAND_GATE] = ma35d1_clk_gate(dev, "nand_gate", "hclk1",
+ clk_base + REG_CLK_SYSCLK0, 18);
+
+ hws[USBD_GATE] = ma35d1_clk_gate(dev, "usbd_gate", "usbphy0",
+ clk_base + REG_CLK_SYSCLK0, 19);
+ hws[USBH_GATE] = ma35d1_clk_gate(dev, "usbh_gate", "usbphy0",
+ clk_base + REG_CLK_SYSCLK0, 20);
+ hws[HUSBH0_GATE] = ma35d1_clk_gate(dev, "husbh0_gate", "usbphy0",
+ clk_base + REG_CLK_SYSCLK0, 21);
+ hws[HUSBH1_GATE] = ma35d1_clk_gate(dev, "husbh1_gate", "usbphy0",
+ clk_base + REG_CLK_SYSCLK0, 22);
+
+ hws[GFX_MUX] = ma35d1_clk_mux(dev, "gfx_mux", clk_base + REG_CLK_CLKSEL0,
+ 26, 1, gfx_sel_clks, ARRAY_SIZE(gfx_sel_clks));
+ hws[GFX_GATE] = ma35d1_clk_gate(dev, "gfx_gate", "gfx_mux",
+ clk_base + REG_CLK_SYSCLK0, 24);
+ hws[VC8K_GATE] = ma35d1_clk_gate(dev, "vc8k_gate", "sysclk0_mux",
+ clk_base + REG_CLK_SYSCLK0, 25);
+ hws[DCU_MUX] = ma35d1_clk_mux(dev, "dcu_mux", clk_base + REG_CLK_CLKSEL0,
+ 24, 1, dcu_sel_clks, ARRAY_SIZE(dcu_sel_clks));
+ hws[DCU_GATE] = ma35d1_clk_gate(dev, "dcu_gate", "dcu_mux",
+ clk_base + REG_CLK_SYSCLK0, 26);
+ hws[DCUP_DIV] = ma35d1_clk_divider_table(dev, "dcup_div", "vpll",
+ clk_base + REG_CLK_CLKDIV0,
+ 16, 3, ip_div_table);
+
+ hws[EMAC0_GATE] = ma35d1_clk_gate(dev, "emac0_gate", "epll_div2",
+ clk_base + REG_CLK_SYSCLK0, 27);
+ hws[EMAC1_GATE] = ma35d1_clk_gate(dev, "emac1_gate", "epll_div2",
+ clk_base + REG_CLK_SYSCLK0, 28);
+
+ hws[CCAP0_MUX] = ma35d1_clk_mux(dev, "ccap0_mux", clk_base + REG_CLK_CLKSEL0,
+ 12, 1, ccap_sel_clks, ARRAY_SIZE(ccap_sel_clks));
+ hws[CCAP0_DIV] = ma35d1_clk_divider(dev, "ccap0_div", "ccap0_mux",
+ clk_base + REG_CLK_CLKDIV1, 8, 4);
+ hws[CCAP0_GATE] = ma35d1_clk_gate(dev, "ccap0_gate", "ccap0_div",
+ clk_base + REG_CLK_SYSCLK0, 29);
+ hws[CCAP1_MUX] = ma35d1_clk_mux(dev, "ccap1_mux", clk_base + REG_CLK_CLKSEL0,
+ 14, 1, ccap_sel_clks, ARRAY_SIZE(ccap_sel_clks));
+ hws[CCAP1_DIV] = ma35d1_clk_divider(dev, "ccap1_div", "ccap1_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 12, 4);
+ hws[CCAP1_GATE] = ma35d1_clk_gate(dev, "ccap1_gate", "ccap1_div",
+ clk_base + REG_CLK_SYSCLK0, 30);
+
+ hws[PDMA0_GATE] = ma35d1_clk_gate(dev, "pdma0_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 0);
+ hws[PDMA1_GATE] = ma35d1_clk_gate(dev, "pdma1_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 1);
+ hws[PDMA2_GATE] = ma35d1_clk_gate(dev, "pdma2_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 2);
+ hws[PDMA3_GATE] = ma35d1_clk_gate(dev, "pdma3_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 3);
+
+ hws[WH0_GATE] = ma35d1_clk_gate(dev, "wh0_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 4);
+ hws[WH1_GATE] = ma35d1_clk_gate(dev, "wh1_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 5);
+
+ hws[HWS_GATE] = ma35d1_clk_gate(dev, "hws_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 6);
+
+ hws[EBI_GATE] = ma35d1_clk_gate(dev, "ebi_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 7);
+
+ hws[SRAM0_GATE] = ma35d1_clk_gate(dev, "sram0_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 8);
+ hws[SRAM1_GATE] = ma35d1_clk_gate(dev, "sram1_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 9);
+
+ hws[ROM_GATE] = ma35d1_clk_gate(dev, "rom_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 10);
+
+ hws[TRA_GATE] = ma35d1_clk_gate(dev, "tra_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 11);
+
+ hws[DBG_MUX] = ma35d1_clk_mux(dev, "dbg_mux", clk_base + REG_CLK_CLKSEL0,
+ 27, 1, dbg_sel_clks, ARRAY_SIZE(dbg_sel_clks));
+ hws[DBG_GATE] = ma35d1_clk_gate(dev, "dbg_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 12);
+
+ hws[CKO_MUX] = ma35d1_clk_mux(dev, "cko_mux", clk_base + REG_CLK_CLKSEL4,
+ 24, 4, cko_sel_clks, ARRAY_SIZE(cko_sel_clks));
+ hws[CKO_DIV] = ma35d1_clk_divider_pow2(dev, "cko_div", "cko_mux",
+ clk_base + REG_CLK_CLKOCTL, 0, 4);
+ hws[CKO_GATE] = ma35d1_clk_gate(dev, "cko_gate", "cko_div",
+ clk_base + REG_CLK_SYSCLK1, 13);
+
+ hws[GTMR_GATE] = ma35d1_clk_gate(dev, "gtmr_gate", "hirc",
+ clk_base + REG_CLK_SYSCLK1, 14);
+
+ hws[GPA_GATE] = ma35d1_clk_gate(dev, "gpa_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 16);
+ hws[GPB_GATE] = ma35d1_clk_gate(dev, "gpb_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 17);
+ hws[GPC_GATE] = ma35d1_clk_gate(dev, "gpc_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 18);
+ hws[GPD_GATE] = ma35d1_clk_gate(dev, "gpd_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 19);
+ hws[GPE_GATE] = ma35d1_clk_gate(dev, "gpe_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 20);
+ hws[GPF_GATE] = ma35d1_clk_gate(dev, "gpf_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 21);
+ hws[GPG_GATE] = ma35d1_clk_gate(dev, "gpg_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 22);
+ hws[GPH_GATE] = ma35d1_clk_gate(dev, "gph_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 23);
+ hws[GPI_GATE] = ma35d1_clk_gate(dev, "gpi_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 24);
+ hws[GPJ_GATE] = ma35d1_clk_gate(dev, "gpj_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 25);
+ hws[GPK_GATE] = ma35d1_clk_gate(dev, "gpk_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 26);
+ hws[GPL_GATE] = ma35d1_clk_gate(dev, "gpl_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 27);
+ hws[GPM_GATE] = ma35d1_clk_gate(dev, "gpm_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 28);
+ hws[GPN_GATE] = ma35d1_clk_gate(dev, "gpn_gate", "hclk0",
+ clk_base + REG_CLK_SYSCLK1, 29);
+
+ hws[TMR0_MUX] = ma35d1_clk_mux(dev, "tmr0_mux", clk_base + REG_CLK_CLKSEL1,
+ 0, 3, timer0_sel_clks,
+ ARRAY_SIZE(timer0_sel_clks));
+ hws[TMR0_GATE] = ma35d1_clk_gate(dev, "tmr0_gate", "tmr0_mux",
+ clk_base + REG_CLK_APBCLK0, 0);
+ hws[TMR1_MUX] = ma35d1_clk_mux(dev, "tmr1_mux", clk_base + REG_CLK_CLKSEL1,
+ 4, 3, timer1_sel_clks,
+ ARRAY_SIZE(timer1_sel_clks));
+ hws[TMR1_GATE] = ma35d1_clk_gate(dev, "tmr1_gate", "tmr1_mux",
+ clk_base + REG_CLK_APBCLK0, 1);
+ hws[TMR2_MUX] = ma35d1_clk_mux(dev, "tmr2_mux", clk_base + REG_CLK_CLKSEL1,
+ 8, 3, timer2_sel_clks,
+ ARRAY_SIZE(timer2_sel_clks));
+ hws[TMR2_GATE] = ma35d1_clk_gate(dev, "tmr2_gate", "tmr2_mux",
+ clk_base + REG_CLK_APBCLK0, 2);
+ hws[TMR3_MUX] = ma35d1_clk_mux(dev, "tmr3_mux", clk_base + REG_CLK_CLKSEL1,
+ 12, 3, timer3_sel_clks,
+ ARRAY_SIZE(timer3_sel_clks));
+ hws[TMR3_GATE] = ma35d1_clk_gate(dev, "tmr3_gate", "tmr3_mux",
+ clk_base + REG_CLK_APBCLK0, 3);
+ hws[TMR4_MUX] = ma35d1_clk_mux(dev, "tmr4_mux", clk_base + REG_CLK_CLKSEL1,
+ 16, 3, timer4_sel_clks,
+ ARRAY_SIZE(timer4_sel_clks));
+ hws[TMR4_GATE] = ma35d1_clk_gate(dev, "tmr4_gate", "tmr4_mux",
+ clk_base + REG_CLK_APBCLK0, 4);
+ hws[TMR5_MUX] = ma35d1_clk_mux(dev, "tmr5_mux", clk_base + REG_CLK_CLKSEL1,
+ 20, 3, timer5_sel_clks,
+ ARRAY_SIZE(timer5_sel_clks));
+ hws[TMR5_GATE] = ma35d1_clk_gate(dev, "tmr5_gate", "tmr5_mux",
+ clk_base + REG_CLK_APBCLK0, 5);
+ hws[TMR6_MUX] = ma35d1_clk_mux(dev, "tmr6_mux", clk_base + REG_CLK_CLKSEL1,
+ 24, 3, timer6_sel_clks,
+ ARRAY_SIZE(timer6_sel_clks));
+ hws[TMR6_GATE] = ma35d1_clk_gate(dev, "tmr6_gate", "tmr6_mux",
+ clk_base + REG_CLK_APBCLK0, 6);
+ hws[TMR7_MUX] = ma35d1_clk_mux(dev, "tmr7_mux", clk_base + REG_CLK_CLKSEL1,
+ 28, 3, timer7_sel_clks,
+ ARRAY_SIZE(timer7_sel_clks));
+ hws[TMR7_GATE] = ma35d1_clk_gate(dev, "tmr7_gate", "tmr7_mux",
+ clk_base + REG_CLK_APBCLK0, 7);
+ hws[TMR8_MUX] = ma35d1_clk_mux(dev, "tmr8_mux", clk_base + REG_CLK_CLKSEL2,
+ 0, 3, timer8_sel_clks,
+ ARRAY_SIZE(timer8_sel_clks));
+ hws[TMR8_GATE] = ma35d1_clk_gate(dev, "tmr8_gate", "tmr8_mux",
+ clk_base + REG_CLK_APBCLK0, 8);
+ hws[TMR9_MUX] = ma35d1_clk_mux(dev, "tmr9_mux", clk_base + REG_CLK_CLKSEL2,
+ 4, 3, timer9_sel_clks,
+ ARRAY_SIZE(timer9_sel_clks));
+ hws[TMR9_GATE] = ma35d1_clk_gate(dev, "tmr9_gate", "tmr9_mux",
+ clk_base + REG_CLK_APBCLK0, 9);
+ hws[TMR10_MUX] = ma35d1_clk_mux(dev, "tmr10_mux", clk_base + REG_CLK_CLKSEL2,
+ 8, 3, timer10_sel_clks,
+ ARRAY_SIZE(timer10_sel_clks));
+ hws[TMR10_GATE] = ma35d1_clk_gate(dev, "tmr10_gate", "tmr10_mux",
+ clk_base + REG_CLK_APBCLK0, 10);
+ hws[TMR11_MUX] = ma35d1_clk_mux(dev, "tmr11_mux", clk_base + REG_CLK_CLKSEL2,
+ 12, 3, timer11_sel_clks,
+ ARRAY_SIZE(timer11_sel_clks));
+ hws[TMR11_GATE] = ma35d1_clk_gate(dev, "tmr11_gate", "tmr11_mux",
+ clk_base + REG_CLK_APBCLK0, 11);
+
+ hws[UART0_MUX] = ma35d1_clk_mux(dev, "uart0_mux", clk_base + REG_CLK_CLKSEL2,
+ 16, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART0_DIV] = ma35d1_clk_divider(dev, "uart0_div", "uart0_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 16, 4);
+ hws[UART0_GATE] = ma35d1_clk_gate(dev, "uart0_gate", "uart0_div",
+ clk_base + REG_CLK_APBCLK0, 12);
+ hws[UART1_MUX] = ma35d1_clk_mux(dev, "uart1_mux", clk_base + REG_CLK_CLKSEL2,
+ 18, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART1_DIV] = ma35d1_clk_divider(dev, "uart1_div", "uart1_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 20, 4);
+ hws[UART1_GATE] = ma35d1_clk_gate(dev, "uart1_gate", "uart1_div",
+ clk_base + REG_CLK_APBCLK0, 13);
+ hws[UART2_MUX] = ma35d1_clk_mux(dev, "uart2_mux", clk_base + REG_CLK_CLKSEL2,
+ 20, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART2_DIV] = ma35d1_clk_divider(dev, "uart2_div", "uart2_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 24, 4);
+ hws[UART2_GATE] = ma35d1_clk_gate(dev, "uart2_gate", "uart2_div",
+ clk_base + REG_CLK_APBCLK0, 14);
+ hws[UART3_MUX] = ma35d1_clk_mux(dev, "uart3_mux", clk_base + REG_CLK_CLKSEL2,
+ 22, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART3_DIV] = ma35d1_clk_divider(dev, "uart3_div", "uart3_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 28, 4);
+ hws[UART3_GATE] = ma35d1_clk_gate(dev, "uart3_gate", "uart3_div",
+ clk_base + REG_CLK_APBCLK0, 15);
+ hws[UART4_MUX] = ma35d1_clk_mux(dev, "uart4_mux", clk_base + REG_CLK_CLKSEL2,
+ 24, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART4_DIV] = ma35d1_clk_divider(dev, "uart4_div", "uart4_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 0, 4);
+ hws[UART4_GATE] = ma35d1_clk_gate(dev, "uart4_gate", "uart4_div",
+ clk_base + REG_CLK_APBCLK0, 16);
+ hws[UART5_MUX] = ma35d1_clk_mux(dev, "uart5_mux", clk_base + REG_CLK_CLKSEL2,
+ 26, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART5_DIV] = ma35d1_clk_divider(dev, "uart5_div", "uart5_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 4, 4);
+ hws[UART5_GATE] = ma35d1_clk_gate(dev, "uart5_gate", "uart5_div",
+ clk_base + REG_CLK_APBCLK0, 17);
+ hws[UART6_MUX] = ma35d1_clk_mux(dev, "uart6_mux", clk_base + REG_CLK_CLKSEL2,
+ 28, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART6_DIV] = ma35d1_clk_divider(dev, "uart6_div", "uart6_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 8, 4);
+ hws[UART6_GATE] = ma35d1_clk_gate(dev, "uart6_gate", "uart6_div",
+ clk_base + REG_CLK_APBCLK0, 18);
+ hws[UART7_MUX] = ma35d1_clk_mux(dev, "uart7_mux", clk_base + REG_CLK_CLKSEL2,
+ 30, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART7_DIV] = ma35d1_clk_divider(dev, "uart7_div", "uart7_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 12, 4);
+ hws[UART7_GATE] = ma35d1_clk_gate(dev, "uart7_gate", "uart7_div",
+ clk_base + REG_CLK_APBCLK0, 19);
+ hws[UART8_MUX] = ma35d1_clk_mux(dev, "uart8_mux", clk_base + REG_CLK_CLKSEL3,
+ 0, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART8_DIV] = ma35d1_clk_divider(dev, "uart8_div", "uart8_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 16, 4);
+ hws[UART8_GATE] = ma35d1_clk_gate(dev, "uart8_gate", "uart8_div",
+ clk_base + REG_CLK_APBCLK0, 20);
+ hws[UART9_MUX] = ma35d1_clk_mux(dev, "uart9_mux", clk_base + REG_CLK_CLKSEL3,
+ 2, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART9_DIV] = ma35d1_clk_divider(dev, "uart9_div", "uart9_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 20, 4);
+ hws[UART9_GATE] = ma35d1_clk_gate(dev, "uart9_gate", "uart9_div",
+ clk_base + REG_CLK_APBCLK0, 21);
+ hws[UART10_MUX] = ma35d1_clk_mux(dev, "uart10_mux", clk_base + REG_CLK_CLKSEL3,
+ 4, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART10_DIV] = ma35d1_clk_divider(dev, "uart10_div", "uart10_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 24, 4);
+ hws[UART10_GATE] = ma35d1_clk_gate(dev, "uart10_gate", "uart10_div",
+ clk_base + REG_CLK_APBCLK0, 22);
+ hws[UART11_MUX] = ma35d1_clk_mux(dev, "uart11_mux", clk_base + REG_CLK_CLKSEL3,
+ 6, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART11_DIV] = ma35d1_clk_divider(dev, "uart11_div", "uart11_mux",
+ clk_base + REG_CLK_CLKDIV2,
+ 28, 4);
+ hws[UART11_GATE] = ma35d1_clk_gate(dev, "uart11_gate", "uart11_div",
+ clk_base + REG_CLK_APBCLK0, 23);
+ hws[UART12_MUX] = ma35d1_clk_mux(dev, "uart12_mux", clk_base + REG_CLK_CLKSEL3,
+ 8, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART12_DIV] = ma35d1_clk_divider(dev, "uart12_div", "uart12_mux",
+ clk_base + REG_CLK_CLKDIV3,
+ 0, 4);
+ hws[UART12_GATE] = ma35d1_clk_gate(dev, "uart12_gate", "uart12_div",
+ clk_base + REG_CLK_APBCLK0, 24);
+ hws[UART13_MUX] = ma35d1_clk_mux(dev, "uart13_mux", clk_base + REG_CLK_CLKSEL3,
+ 10, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART13_DIV] = ma35d1_clk_divider(dev, "uart13_div", "uart13_mux",
+ clk_base + REG_CLK_CLKDIV3,
+ 4, 4);
+ hws[UART13_GATE] = ma35d1_clk_gate(dev, "uart13_gate", "uart13_div",
+ clk_base + REG_CLK_APBCLK0, 25);
+ hws[UART14_MUX] = ma35d1_clk_mux(dev, "uart14_mux", clk_base + REG_CLK_CLKSEL3,
+ 12, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART14_DIV] = ma35d1_clk_divider(dev, "uart14_div", "uart14_mux",
+ clk_base + REG_CLK_CLKDIV3,
+ 8, 4);
+ hws[UART14_GATE] = ma35d1_clk_gate(dev, "uart14_gate", "uart14_div",
+ clk_base + REG_CLK_APBCLK0, 26);
+ hws[UART15_MUX] = ma35d1_clk_mux(dev, "uart15_mux", clk_base + REG_CLK_CLKSEL3,
+ 14, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART15_DIV] = ma35d1_clk_divider(dev, "uart15_div", "uart15_mux",
+ clk_base + REG_CLK_CLKDIV3,
+ 12, 4);
+ hws[UART15_GATE] = ma35d1_clk_gate(dev, "uart15_gate", "uart15_div",
+ clk_base + REG_CLK_APBCLK0, 27);
+ hws[UART16_MUX] = ma35d1_clk_mux(dev, "uart16_mux", clk_base + REG_CLK_CLKSEL3,
+ 16, 2, uart_sel_clks, ARRAY_SIZE(uart_sel_clks));
+ hws[UART16_DIV] = ma35d1_clk_divider(dev, "uart16_div", "uart16_mux",
+ clk_base + REG_CLK_CLKDIV3,
+ 16, 4);
+ hws[UART16_GATE] = ma35d1_clk_gate(dev, "uart16_gate", "uart16_div",
+ clk_base + REG_CLK_APBCLK0, 28);
+
+ hws[RTC_GATE] = ma35d1_clk_gate(dev, "rtc_gate", "lxt",
+ clk_base + REG_CLK_APBCLK0, 29);
+ hws[DDR_GATE] = ma35d1_clk_gate(dev, "ddr_gate", "ddrpll",
+ clk_base + REG_CLK_APBCLK0, 30);
+
+ hws[KPI_MUX] = ma35d1_clk_mux(dev, "kpi_mux", clk_base + REG_CLK_CLKSEL4,
+ 30, 1, kpi_sel_clks, ARRAY_SIZE(kpi_sel_clks));
+ hws[KPI_DIV] = ma35d1_clk_divider(dev, "kpi_div", "kpi_mux",
+ clk_base + REG_CLK_CLKDIV4,
+ 24, 8);
+ hws[KPI_GATE] = ma35d1_clk_gate(dev, "kpi_gate", "kpi_div",
+ clk_base + REG_CLK_APBCLK0, 31);
+
+ hws[I2C0_GATE] = ma35d1_clk_gate(dev, "i2c0_gate", "pclk0",
+ clk_base + REG_CLK_APBCLK1, 0);
+ hws[I2C1_GATE] = ma35d1_clk_gate(dev, "i2c1_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK1, 1);
+ hws[I2C2_GATE] = ma35d1_clk_gate(dev, "i2c2_gate", "pclk2",
+ clk_base + REG_CLK_APBCLK1, 2);
+ hws[I2C3_GATE] = ma35d1_clk_gate(dev, "i2c3_gate", "pclk0",
+ clk_base + REG_CLK_APBCLK1, 3);
+ hws[I2C4_GATE] = ma35d1_clk_gate(dev, "i2c4_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK1, 4);
+ hws[I2C5_GATE] = ma35d1_clk_gate(dev, "i2c5_gate", "pclk2",
+ clk_base + REG_CLK_APBCLK1, 5);
+
+ hws[QSPI0_MUX] = ma35d1_clk_mux(dev, "qspi0_mux", clk_base + REG_CLK_CLKSEL4,
+ 8, 2, qspi0_sel_clks, ARRAY_SIZE(qspi0_sel_clks));
+ hws[QSPI0_GATE] = ma35d1_clk_gate(dev, "qspi0_gate", "qspi0_mux",
+ clk_base + REG_CLK_APBCLK1, 6);
+ hws[QSPI1_MUX] = ma35d1_clk_mux(dev, "qspi1_mux", clk_base + REG_CLK_CLKSEL4,
+ 10, 2, qspi1_sel_clks, ARRAY_SIZE(qspi1_sel_clks));
+ hws[QSPI1_GATE] = ma35d1_clk_gate(dev, "qspi1_gate", "qspi1_mux",
+ clk_base + REG_CLK_APBCLK1, 7);
+
+ hws[SMC0_MUX] = ma35d1_clk_mux(dev, "smc0_mux", clk_base + REG_CLK_CLKSEL4,
+ 28, 1, smc_sel_clks, ARRAY_SIZE(smc_sel_clks));
+ hws[SMC0_DIV] = ma35d1_clk_divider(dev, "smc0_div", "smc0_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 0, 4);
+ hws[SMC0_GATE] = ma35d1_clk_gate(dev, "smc0_gate", "smc0_div",
+ clk_base + REG_CLK_APBCLK1, 12);
+ hws[SMC1_MUX] = ma35d1_clk_mux(dev, "smc1_mux", clk_base + REG_CLK_CLKSEL4,
+ 29, 1, smc_sel_clks, ARRAY_SIZE(smc_sel_clks));
+ hws[SMC1_DIV] = ma35d1_clk_divider(dev, "smc1_div", "smc1_mux",
+ clk_base + REG_CLK_CLKDIV1,
+ 4, 4);
+ hws[SMC1_GATE] = ma35d1_clk_gate(dev, "smc1_gate", "smc1_div",
+ clk_base + REG_CLK_APBCLK1, 13);
+
+ hws[WDT0_MUX] = ma35d1_clk_mux(dev, "wdt0_mux", clk_base + REG_CLK_CLKSEL3,
+ 20, 2, wdt0_sel_clks, ARRAY_SIZE(wdt0_sel_clks));
+ hws[WDT0_GATE] = ma35d1_clk_gate(dev, "wdt0_gate", "wdt0_mux",
+ clk_base + REG_CLK_APBCLK1, 16);
+ hws[WDT1_MUX] = ma35d1_clk_mux(dev, "wdt1_mux", clk_base + REG_CLK_CLKSEL3,
+ 24, 2, wdt1_sel_clks, ARRAY_SIZE(wdt1_sel_clks));
+ hws[WDT1_GATE] = ma35d1_clk_gate(dev, "wdt1_gate", "wdt1_mux",
+ clk_base + REG_CLK_APBCLK1, 17);
+ hws[WDT2_MUX] = ma35d1_clk_mux(dev, "wdt2_mux", clk_base + REG_CLK_CLKSEL3,
+ 28, 2, wdt2_sel_clks, ARRAY_SIZE(wdt2_sel_clks));
+ hws[WDT2_GATE] = ma35d1_clk_gate(dev, "wdt2_gate", "wdt2_mux",
+ clk_base + REG_CLK_APBCLK1, 18);
+
+ hws[WWDT0_MUX] = ma35d1_clk_mux(dev, "wwdt0_mux", clk_base + REG_CLK_CLKSEL3,
+ 22, 2, wwdt0_sel_clks, ARRAY_SIZE(wwdt0_sel_clks));
+ hws[WWDT1_MUX] = ma35d1_clk_mux(dev, "wwdt1_mux", clk_base + REG_CLK_CLKSEL3,
+ 26, 2, wwdt1_sel_clks, ARRAY_SIZE(wwdt1_sel_clks));
+ hws[WWDT2_MUX] = ma35d1_clk_mux(dev, "wwdt2_mux", clk_base + REG_CLK_CLKSEL3,
+ 30, 2, wwdt2_sel_clks, ARRAY_SIZE(wwdt2_sel_clks));
+
+ hws[EPWM0_GATE] = ma35d1_clk_gate(dev, "epwm0_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK1, 24);
+ hws[EPWM1_GATE] = ma35d1_clk_gate(dev, "epwm1_gate", "pclk2",
+ clk_base + REG_CLK_APBCLK1, 25);
+ hws[EPWM2_GATE] = ma35d1_clk_gate(dev, "epwm2_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK1, 26);
+
+ hws[I2S0_MUX] = ma35d1_clk_mux(dev, "i2s0_mux", clk_base + REG_CLK_CLKSEL4,
+ 12, 2, i2s0_sel_clks, ARRAY_SIZE(i2s0_sel_clks));
+ hws[I2S0_GATE] = ma35d1_clk_gate(dev, "i2s0_gate", "i2s0_mux",
+ clk_base + REG_CLK_APBCLK2, 0);
+ hws[I2S1_MUX] = ma35d1_clk_mux(dev, "i2s1_mux", clk_base + REG_CLK_CLKSEL4,
+ 14, 2, i2s1_sel_clks, ARRAY_SIZE(i2s1_sel_clks));
+ hws[I2S1_GATE] = ma35d1_clk_gate(dev, "i2s1_gate", "i2s1_mux",
+ clk_base + REG_CLK_APBCLK2, 1);
+
+ hws[SSMCC_GATE] = ma35d1_clk_gate(dev, "ssmcc_gate", "pclk3",
+ clk_base + REG_CLK_APBCLK2, 2);
+ hws[SSPCC_GATE] = ma35d1_clk_gate(dev, "sspcc_gate", "pclk3",
+ clk_base + REG_CLK_APBCLK2, 3);
+
+ hws[SPI0_MUX] = ma35d1_clk_mux(dev, "spi0_mux", clk_base + REG_CLK_CLKSEL4,
+ 0, 2, spi0_sel_clks, ARRAY_SIZE(spi0_sel_clks));
+ hws[SPI0_GATE] = ma35d1_clk_gate(dev, "spi0_gate", "spi0_mux",
+ clk_base + REG_CLK_APBCLK2, 4);
+ hws[SPI1_MUX] = ma35d1_clk_mux(dev, "spi1_mux", clk_base + REG_CLK_CLKSEL4,
+ 2, 2, spi1_sel_clks, ARRAY_SIZE(spi1_sel_clks));
+ hws[SPI1_GATE] = ma35d1_clk_gate(dev, "spi1_gate", "spi1_mux",
+ clk_base + REG_CLK_APBCLK2, 5);
+ hws[SPI2_MUX] = ma35d1_clk_mux(dev, "spi2_mux", clk_base + REG_CLK_CLKSEL4,
+ 4, 2, spi2_sel_clks, ARRAY_SIZE(spi2_sel_clks));
+ hws[SPI2_GATE] = ma35d1_clk_gate(dev, "spi2_gate", "spi2_mux",
+ clk_base + REG_CLK_APBCLK2, 6);
+ hws[SPI3_MUX] = ma35d1_clk_mux(dev, "spi3_mux", clk_base + REG_CLK_CLKSEL4,
+ 6, 2, spi3_sel_clks, ARRAY_SIZE(spi3_sel_clks));
+ hws[SPI3_GATE] = ma35d1_clk_gate(dev, "spi3_gate", "spi3_mux",
+ clk_base + REG_CLK_APBCLK2, 7);
+
+ hws[ECAP0_GATE] = ma35d1_clk_gate(dev, "ecap0_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK2, 8);
+ hws[ECAP1_GATE] = ma35d1_clk_gate(dev, "ecap1_gate", "pclk2",
+ clk_base + REG_CLK_APBCLK2, 9);
+ hws[ECAP2_GATE] = ma35d1_clk_gate(dev, "ecap2_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK2, 10);
+
+ hws[QEI0_GATE] = ma35d1_clk_gate(dev, "qei0_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK2, 12);
+ hws[QEI1_GATE] = ma35d1_clk_gate(dev, "qei1_gate", "pclk2",
+ clk_base + REG_CLK_APBCLK2, 13);
+ hws[QEI2_GATE] = ma35d1_clk_gate(dev, "qei2_gate", "pclk1",
+ clk_base + REG_CLK_APBCLK2, 14);
+
+ hws[ADC_DIV] = ma35d1_reg_adc_clkdiv(dev, "adc_div", hws[PCLK0],
+ &ma35d1_lock, 0,
+ clk_base + REG_CLK_CLKDIV4,
+ 4, 17, 0x1ffff);
+ hws[ADC_GATE] = ma35d1_clk_gate(dev, "adc_gate", "adc_div",
+ clk_base + REG_CLK_APBCLK2, 24);
+
+ hws[EADC_DIV] = ma35d1_clk_divider_table(dev, "eadc_div", "pclk2",
+ clk_base + REG_CLK_CLKDIV4,
+ 0, 4, eadc_div_table);
+ hws[EADC_GATE] = ma35d1_clk_gate(dev, "eadc_gate", "eadc_div",
+ clk_base + REG_CLK_APBCLK2, 25);
+
+ return devm_of_clk_add_hw_provider(dev,
+ of_clk_hw_onecell_get,
+ ma35d1_hw_data);
+}
+
+static const struct of_device_id ma35d1_clk_of_match[] = {
+ { .compatible = "nuvoton,ma35d1-clk" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, ma35d1_clk_of_match);
+
+static struct platform_driver ma35d1_clk_driver = {
+ .probe = ma35d1_clocks_probe,
+ .driver = {
+ .name = "ma35d1-clk",
+ .of_match_table = ma35d1_clk_of_match,
+ },
+};
+
+static int __init ma35d1_clocks_init(void)
+{
+ return platform_driver_register(&ma35d1_clk_driver);
+}
+
+postcore_initcall(ma35d1_clocks_init);
+
+MODULE_AUTHOR("Chi-Fang Li <[email protected]>");
+MODULE_DESCRIPTION("NUVOTON MA35D1 Clock Driver");
+MODULE_LICENSE("GPL");
--
2.34.1

2023-05-08 03:15:56

by Jacky Huang

Subject: [PATCH v10 09/10] reset: Add Nuvoton ma35d1 reset driver support

From: Jacky Huang <[email protected]>

This driver supports individual IP reset for ma35d1. The reset
control registers is a subset of system control registers.

Signed-off-by: Jacky Huang <[email protected]>
---
drivers/reset/Kconfig | 6 +
drivers/reset/Makefile | 1 +
drivers/reset/reset-ma35d1.c | 234 +++++++++++++++++++++++++++++++++++
3 files changed, 241 insertions(+)
create mode 100644 drivers/reset/reset-ma35d1.c

diff --git a/drivers/reset/Kconfig b/drivers/reset/Kconfig
index 6aa8f243b30c..07499177a266 100644
--- a/drivers/reset/Kconfig
+++ b/drivers/reset/Kconfig
@@ -143,6 +143,12 @@ config RESET_NPCM
This enables the reset controller driver for Nuvoton NPCM
BMC SoCs.

+config RESET_NUVOTON_MA35D1
+ bool "Nuvton MA35D1 Reset Driver"
+ default ARCH_MA35 || COMPILE_TEST
+ help
+ This enables the reset controller driver for Nuvoton MA35D1 SoC.
+
config RESET_OXNAS
bool

diff --git a/drivers/reset/Makefile b/drivers/reset/Makefile
index 7fec5af6c964..411b45ba0da7 100644
--- a/drivers/reset/Makefile
+++ b/drivers/reset/Makefile
@@ -21,6 +21,7 @@ obj-$(CONFIG_RESET_MCHP_SPARX5) += reset-microchip-sparx5.o
obj-$(CONFIG_RESET_MESON) += reset-meson.o
obj-$(CONFIG_RESET_MESON_AUDIO_ARB) += reset-meson-audio-arb.o
obj-$(CONFIG_RESET_NPCM) += reset-npcm.o
+obj-$(CONFIG_RESET_NUVOTON_MA35D1) += reset-ma35d1.o
obj-$(CONFIG_RESET_OXNAS) += reset-oxnas.o
obj-$(CONFIG_RESET_PISTACHIO) += reset-pistachio.o
obj-$(CONFIG_RESET_POLARFIRE_SOC) += reset-mpfs.o
diff --git a/drivers/reset/reset-ma35d1.c b/drivers/reset/reset-ma35d1.c
new file mode 100644
index 000000000000..19ed323981df
--- /dev/null
+++ b/drivers/reset/reset-ma35d1.c
@@ -0,0 +1,234 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2023 Nuvoton Technology Corp.
+ * Author: Chi-Fang Li <[email protected]>
+ */
+
+#include <linux/bits.h>
+#include <linux/container_of.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/reboot.h>
+#include <linux/reset-controller.h>
+#include <linux/spinlock.h>
+#include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
+
+struct ma35d1_reset_data {
+ struct reset_controller_dev rcdev;
+ struct notifier_block restart_handler;
+ void __iomem *base;
+ spinlock_t lock;
+};
+
+static const struct {
+ u32 reg_ofs;
+ u32 bit;
+} ma35d1_reset_map[] = {
+ [MA35D1_RESET_CHIP] = {0x20, 0},
+ [MA35D1_RESET_CA35CR0] = {0x20, 1},
+ [MA35D1_RESET_CA35CR1] = {0x20, 2},
+ [MA35D1_RESET_CM4] = {0x20, 3},
+ [MA35D1_RESET_PDMA0] = {0x20, 4},
+ [MA35D1_RESET_PDMA1] = {0x20, 5},
+ [MA35D1_RESET_PDMA2] = {0x20, 6},
+ [MA35D1_RESET_PDMA3] = {0x20, 7},
+ [MA35D1_RESET_DISP] = {0x20, 9},
+ [MA35D1_RESET_VCAP0] = {0x20, 10},
+ [MA35D1_RESET_VCAP1] = {0x20, 11},
+ [MA35D1_RESET_GFX] = {0x20, 12},
+ [MA35D1_RESET_VDEC] = {0x20, 13},
+ [MA35D1_RESET_WHC0] = {0x20, 14},
+ [MA35D1_RESET_WHC1] = {0x20, 15},
+ [MA35D1_RESET_GMAC0] = {0x20, 16},
+ [MA35D1_RESET_GMAC1] = {0x20, 17},
+ [MA35D1_RESET_HWSEM] = {0x20, 18},
+ [MA35D1_RESET_EBI] = {0x20, 19},
+ [MA35D1_RESET_HSUSBH0] = {0x20, 20},
+ [MA35D1_RESET_HSUSBH1] = {0x20, 21},
+ [MA35D1_RESET_HSUSBD] = {0x20, 22},
+ [MA35D1_RESET_USBHL] = {0x20, 23},
+ [MA35D1_RESET_SDH0] = {0x20, 24},
+ [MA35D1_RESET_SDH1] = {0x20, 25},
+ [MA35D1_RESET_NAND] = {0x20, 26},
+ [MA35D1_RESET_GPIO] = {0x20, 27},
+ [MA35D1_RESET_MCTLP] = {0x20, 28},
+ [MA35D1_RESET_MCTLC] = {0x20, 29},
+ [MA35D1_RESET_DDRPUB] = {0x20, 30},
+ [MA35D1_RESET_TMR0] = {0x24, 2},
+ [MA35D1_RESET_TMR1] = {0x24, 3},
+ [MA35D1_RESET_TMR2] = {0x24, 4},
+ [MA35D1_RESET_TMR3] = {0x24, 5},
+ [MA35D1_RESET_I2C0] = {0x24, 8},
+ [MA35D1_RESET_I2C1] = {0x24, 9},
+ [MA35D1_RESET_I2C2] = {0x24, 10},
+ [MA35D1_RESET_I2C3] = {0x24, 11},
+ [MA35D1_RESET_QSPI0] = {0x24, 12},
+ [MA35D1_RESET_SPI0] = {0x24, 13},
+ [MA35D1_RESET_SPI1] = {0x24, 14},
+ [MA35D1_RESET_SPI2] = {0x24, 15},
+ [MA35D1_RESET_UART0] = {0x24, 16},
+ [MA35D1_RESET_UART1] = {0x24, 17},
+ [MA35D1_RESET_UART2] = {0x24, 18},
+ [MA35D1_RESET_UART3] = {0x24, 19},
+ [MA35D1_RESET_UART4] = {0x24, 20},
+ [MA35D1_RESET_UART5] = {0x24, 21},
+ [MA35D1_RESET_UART6] = {0x24, 22},
+ [MA35D1_RESET_UART7] = {0x24, 23},
+ [MA35D1_RESET_CANFD0] = {0x24, 24},
+ [MA35D1_RESET_CANFD1] = {0x24, 25},
+ [MA35D1_RESET_EADC0] = {0x24, 28},
+ [MA35D1_RESET_I2S0] = {0x24, 29},
+ [MA35D1_RESET_SC0] = {0x28, 0},
+ [MA35D1_RESET_SC1] = {0x28, 1},
+ [MA35D1_RESET_QSPI1] = {0x28, 4},
+ [MA35D1_RESET_SPI3] = {0x28, 6},
+ [MA35D1_RESET_EPWM0] = {0x28, 16},
+ [MA35D1_RESET_EPWM1] = {0x28, 17},
+ [MA35D1_RESET_QEI0] = {0x28, 22},
+ [MA35D1_RESET_QEI1] = {0x28, 23},
+ [MA35D1_RESET_ECAP0] = {0x28, 26},
+ [MA35D1_RESET_ECAP1] = {0x28, 27},
+ [MA35D1_RESET_CANFD2] = {0x28, 28},
+ [MA35D1_RESET_ADC0] = {0x28, 31},
+ [MA35D1_RESET_TMR4] = {0x2C, 0},
+ [MA35D1_RESET_TMR5] = {0x2C, 1},
+ [MA35D1_RESET_TMR6] = {0x2C, 2},
+ [MA35D1_RESET_TMR7] = {0x2C, 3},
+ [MA35D1_RESET_TMR8] = {0x2C, 4},
+ [MA35D1_RESET_TMR9] = {0x2C, 5},
+ [MA35D1_RESET_TMR10] = {0x2C, 6},
+ [MA35D1_RESET_TMR11] = {0x2C, 7},
+ [MA35D1_RESET_UART8] = {0x2C, 8},
+ [MA35D1_RESET_UART9] = {0x2C, 9},
+ [MA35D1_RESET_UART10] = {0x2C, 10},
+ [MA35D1_RESET_UART11] = {0x2C, 11},
+ [MA35D1_RESET_UART12] = {0x2C, 12},
+ [MA35D1_RESET_UART13] = {0x2C, 13},
+ [MA35D1_RESET_UART14] = {0x2C, 14},
+ [MA35D1_RESET_UART15] = {0x2C, 15},
+ [MA35D1_RESET_UART16] = {0x2C, 16},
+ [MA35D1_RESET_I2S1] = {0x2C, 17},
+ [MA35D1_RESET_I2C4] = {0x2C, 18},
+ [MA35D1_RESET_I2C5] = {0x2C, 19},
+ [MA35D1_RESET_EPWM2] = {0x2C, 20},
+ [MA35D1_RESET_ECAP2] = {0x2C, 21},
+ [MA35D1_RESET_QEI2] = {0x2C, 22},
+ [MA35D1_RESET_CANFD3] = {0x2C, 23},
+ [MA35D1_RESET_KPI] = {0x2C, 24},
+ [MA35D1_RESET_GIC] = {0x2C, 28},
+ [MA35D1_RESET_SSMCC] = {0x2C, 30},
+ [MA35D1_RESET_SSPCC] = {0x2C, 31}
+};
+
+static int ma35d1_restart_handler(struct notifier_block *this, unsigned long mode, void *cmd)
+{
+ struct ma35d1_reset_data *data =
+ container_of(this, struct ma35d1_reset_data, restart_handler);
+ u32 id = MA35D1_RESET_CHIP;
+
+ writel_relaxed(BIT(ma35d1_reset_map[id].bit),
+ data->base + ma35d1_reset_map[id].reg_ofs);
+ return 0;
+}
+
+static int ma35d1_reset_update(struct reset_controller_dev *rcdev, unsigned long id, bool assert)
+{
+ struct ma35d1_reset_data *data = container_of(rcdev, struct ma35d1_reset_data, rcdev);
+ unsigned long flags;
+ u32 reg;
+
+ if (WARN_ON_ONCE(id >= ARRAY_SIZE(ma35d1_reset_map)))
+ return -EINVAL;
+
+ spin_lock_irqsave(&data->lock, flags);
+ reg = readl_relaxed(data->base + ma35d1_reset_map[id].reg_ofs);
+ if (assert)
+ reg |= BIT(ma35d1_reset_map[id].bit);
+ else
+ reg &= ~(BIT(ma35d1_reset_map[id].bit));
+ writel_relaxed(reg, data->base + ma35d1_reset_map[id].reg_ofs);
+ spin_unlock_irqrestore(&data->lock, flags);
+
+ return 0;
+}
+
+static int ma35d1_reset_assert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ return ma35d1_reset_update(rcdev, id, true);
+}
+
+static int ma35d1_reset_deassert(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ return ma35d1_reset_update(rcdev, id, false);
+}
+
+static int ma35d1_reset_status(struct reset_controller_dev *rcdev, unsigned long id)
+{
+ struct ma35d1_reset_data *data = container_of(rcdev, struct ma35d1_reset_data, rcdev);
+ u32 reg;
+
+ if (WARN_ON_ONCE(id >= ARRAY_SIZE(ma35d1_reset_map)))
+ return -EINVAL;
+
+ reg = readl_relaxed(data->base + ma35d1_reset_map[id].reg_ofs);
+ return !!(reg & BIT(ma35d1_reset_map[id].bit));
+}
+
+static const struct reset_control_ops ma35d1_reset_ops = {
+ .assert = ma35d1_reset_assert,
+ .deassert = ma35d1_reset_deassert,
+ .status = ma35d1_reset_status,
+};
+
+static const struct of_device_id ma35d1_reset_dt_ids[] = {
+ { .compatible = "nuvoton,ma35d1-reset" },
+ { },
+};
+
+static int ma35d1_reset_probe(struct platform_device *pdev)
+{
+ struct ma35d1_reset_data *reset_data;
+ struct device *dev = &pdev->dev;
+ int err;
+
+ if (!pdev->dev.of_node) {
+ dev_err(&pdev->dev, "Device tree node not found\n");
+ return -EINVAL;
+ }
+
+ reset_data = devm_kzalloc(dev, sizeof(*reset_data), GFP_KERNEL);
+ if (!reset_data)
+ return -ENOMEM;
+
+ reset_data->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(reset_data->base))
+ return PTR_ERR(reset_data->base);
+
+ reset_data->rcdev.owner = THIS_MODULE;
+ reset_data->rcdev.nr_resets = MA35D1_RESET_COUNT;
+ reset_data->rcdev.ops = &ma35d1_reset_ops;
+ reset_data->rcdev.of_node = dev->of_node;
+ reset_data->restart_handler.notifier_call = ma35d1_restart_handler;
+ reset_data->restart_handler.priority = 192;
+ spin_lock_init(&reset_data->lock);
+
+ err = register_restart_handler(&reset_data->restart_handler);
+ if (err)
+ dev_warn(&pdev->dev, "failed to register restart handler\n");
+
+ return devm_reset_controller_register(dev, &reset_data->rcdev);
+}
+
+static struct platform_driver ma35d1_reset_driver = {
+ .probe = ma35d1_reset_probe,
+ .driver = {
+ .name = "ma35d1-reset",
+ .of_match_table = ma35d1_reset_dt_ids,
+ },
+};
+
+builtin_platform_driver(ma35d1_reset_driver);
--
2.34.1

2023-05-08 03:17:32

by Jacky Huang

Subject: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

From: Jacky Huang <[email protected]>

Add documentation that describes the nuvoton ma35d1 UART driver bindings.

Signed-off-by: Jacky Huang <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
.../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
1 file changed, 48 insertions(+)
create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml

diff --git a/Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml b/Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
new file mode 100644
index 000000000000..a76af0f6009b
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/nuvoton,ma35d1-serial.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton MA35D1 Universal Asynchronous Receiver/Transmitter (UART)
+
+maintainers:
+ - Min-Jen Chen <[email protected]>
+ - Jacky Huang <[email protected]>
+
+allOf:
+ - $ref: serial.yaml
+
+properties:
+ compatible:
+ const: nuvoton,ma35d1-uart
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
+
+ serial@40700000 {
+ compatible = "nuvoton,ma35d1-uart";
+ reg = <0x40700000 0x100>;
+ interrupts = <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk UART0_GATE>;
+ };
+...
--
2.34.1

2023-05-08 03:19:15

by Jacky Huang

Subject: [PATCH v10 02/10] arm64: defconfig: Add support for Nuvoton MA35 family SoCs

From: Jacky Huang <[email protected]>

This adds support for the Nuvoton MA35 family SoCs which
are based on the Cortex-A35 Armv8-A 64-bit architecture.

Signed-off-by: Jacky Huang <[email protected]>
Acked-by: Krzysztof Kozlowski <[email protected]>
---
arch/arm64/configs/defconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index a24609e14d50..0ee572753f1a 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -52,6 +52,7 @@ CONFIG_ARCH_NXP=y
CONFIG_ARCH_LAYERSCAPE=y
CONFIG_ARCH_MXC=y
CONFIG_ARCH_S32=y
+CONFIG_ARCH_MA35=y
CONFIG_ARCH_NPCM=y
CONFIG_ARCH_QCOM=y
CONFIG_ARCH_RENESAS=y
--
2.34.1

2023-05-08 03:27:13

by Jacky Huang

Subject: [PATCH v10 04/10] dt-bindings: reset: nuvoton: Document ma35d1 reset control

From: Jacky Huang <[email protected]>

Add the dt-bindings header for Nuvoton ma35d1, that gets shared
between the reset controller and reset references in the dts.
Add documentation to describe nuvoton ma35d1 reset driver.

Signed-off-by: Jacky Huang <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
---
.../bindings/reset/nuvoton,ma35d1-reset.yaml | 45 ++++++++
.../dt-bindings/reset/nuvoton,ma35d1-reset.h | 108 ++++++++++++++++++
2 files changed, 153 insertions(+)
create mode 100644 Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
create mode 100644 include/dt-bindings/reset/nuvoton,ma35d1-reset.h

diff --git a/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml b/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
new file mode 100644
index 000000000000..34c5c1c08ec1
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/nuvoton,ma35d1-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton MA35D1 Reset Controller
+
+maintainers:
+ - Chi-Fang Li <[email protected]>
+ - Jacky Huang <[email protected]>
+
+description:
+ The system reset controller can be used to reset various peripheral
+ controllers in MA35D1 SoC.
+
+properties:
+ compatible:
+ items:
+ - const: nuvoton,ma35d1-reset
+
+ reg:
+ maxItems: 1
+
+ '#reset-cells':
+ const: 1
+
+required:
+ - compatible
+ - reg
+ - '#reset-cells'
+
+additionalProperties: false
+
+examples:
+ # system reset controller node:
+ - |
+
+ system-management@40460000 {
+ compatible = "nuvoton,ma35d1-reset";
+ reg = <0x40460000 0x200>;
+ #reset-cells = <1>;
+ };
+...
+
diff --git a/include/dt-bindings/reset/nuvoton,ma35d1-reset.h b/include/dt-bindings/reset/nuvoton,ma35d1-reset.h
new file mode 100644
index 000000000000..2e99ee0d68c5
--- /dev/null
+++ b/include/dt-bindings/reset/nuvoton,ma35d1-reset.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2023 Nuvoton Technologies.
+ * Author: Chi-Fen Li <[email protected]>
+ *
+ * Device Tree binding constants for MA35D1 reset controller.
+ */
+
+#ifndef __DT_BINDINGS_RESET_MA35D1_H
+#define __DT_BINDINGS_RESET_MA35D1_H
+
+#define MA35D1_RESET_CHIP 0
+#define MA35D1_RESET_CA35CR0 1
+#define MA35D1_RESET_CA35CR1 2
+#define MA35D1_RESET_CM4 3
+#define MA35D1_RESET_PDMA0 4
+#define MA35D1_RESET_PDMA1 5
+#define MA35D1_RESET_PDMA2 6
+#define MA35D1_RESET_PDMA3 7
+#define MA35D1_RESET_DISP 8
+#define MA35D1_RESET_VCAP0 9
+#define MA35D1_RESET_VCAP1 10
+#define MA35D1_RESET_GFX 11
+#define MA35D1_RESET_VDEC 12
+#define MA35D1_RESET_WHC0 13
+#define MA35D1_RESET_WHC1 14
+#define MA35D1_RESET_GMAC0 15
+#define MA35D1_RESET_GMAC1 16
+#define MA35D1_RESET_HWSEM 17
+#define MA35D1_RESET_EBI 18
+#define MA35D1_RESET_HSUSBH0 19
+#define MA35D1_RESET_HSUSBH1 20
+#define MA35D1_RESET_HSUSBD 21
+#define MA35D1_RESET_USBHL 22
+#define MA35D1_RESET_SDH0 23
+#define MA35D1_RESET_SDH1 24
+#define MA35D1_RESET_NAND 25
+#define MA35D1_RESET_GPIO 26
+#define MA35D1_RESET_MCTLP 27
+#define MA35D1_RESET_MCTLC 28
+#define MA35D1_RESET_DDRPUB 29
+#define MA35D1_RESET_TMR0 30
+#define MA35D1_RESET_TMR1 31
+#define MA35D1_RESET_TMR2 32
+#define MA35D1_RESET_TMR3 33
+#define MA35D1_RESET_I2C0 34
+#define MA35D1_RESET_I2C1 35
+#define MA35D1_RESET_I2C2 36
+#define MA35D1_RESET_I2C3 37
+#define MA35D1_RESET_QSPI0 38
+#define MA35D1_RESET_SPI0 39
+#define MA35D1_RESET_SPI1 40
+#define MA35D1_RESET_SPI2 41
+#define MA35D1_RESET_UART0 42
+#define MA35D1_RESET_UART1 43
+#define MA35D1_RESET_UART2 44
+#define MA35D1_RESET_UART3 45
+#define MA35D1_RESET_UART4 46
+#define MA35D1_RESET_UART5 47
+#define MA35D1_RESET_UART6 48
+#define MA35D1_RESET_UART7 49
+#define MA35D1_RESET_CANFD0 50
+#define MA35D1_RESET_CANFD1 51
+#define MA35D1_RESET_EADC0 52
+#define MA35D1_RESET_I2S0 53
+#define MA35D1_RESET_SC0 54
+#define MA35D1_RESET_SC1 55
+#define MA35D1_RESET_QSPI1 56
+#define MA35D1_RESET_SPI3 57
+#define MA35D1_RESET_EPWM0 58
+#define MA35D1_RESET_EPWM1 59
+#define MA35D1_RESET_QEI0 60
+#define MA35D1_RESET_QEI1 61
+#define MA35D1_RESET_ECAP0 62
+#define MA35D1_RESET_ECAP1 63
+#define MA35D1_RESET_CANFD2 64
+#define MA35D1_RESET_ADC0 65
+#define MA35D1_RESET_TMR4 66
+#define MA35D1_RESET_TMR5 67
+#define MA35D1_RESET_TMR6 68
+#define MA35D1_RESET_TMR7 69
+#define MA35D1_RESET_TMR8 70
+#define MA35D1_RESET_TMR9 71
+#define MA35D1_RESET_TMR10 72
+#define MA35D1_RESET_TMR11 73
+#define MA35D1_RESET_UART8 74
+#define MA35D1_RESET_UART9 75
+#define MA35D1_RESET_UART10 76
+#define MA35D1_RESET_UART11 77
+#define MA35D1_RESET_UART12 78
+#define MA35D1_RESET_UART13 79
+#define MA35D1_RESET_UART14 80
+#define MA35D1_RESET_UART15 81
+#define MA35D1_RESET_UART16 82
+#define MA35D1_RESET_I2S1 83
+#define MA35D1_RESET_I2C4 84
+#define MA35D1_RESET_I2C5 85
+#define MA35D1_RESET_EPWM2 86
+#define MA35D1_RESET_ECAP2 87
+#define MA35D1_RESET_QEI2 88
+#define MA35D1_RESET_CANFD3 89
+#define MA35D1_RESET_KPI 90
+#define MA35D1_RESET_GIC 91
+#define MA35D1_RESET_SSMCC 92
+#define MA35D1_RESET_SSPCC 93
+#define MA35D1_RESET_COUNT 94
+
+#endif
--
2.34.1

2023-05-08 03:28:25

by Rob Herring (Arm)

Subject: Re: [PATCH v10 04/10] dt-bindings: reset: nuvoton: Document ma35d1 reset control

On Mon, 08 May 2023 02:59:30 +0000, Jacky Huang wrote:
> From: Jacky Huang <[email protected]>
>
> Add the dt-bindings header for Nuvoton ma35d1, that gets shared
> between the reset controller and reset references in the dts.
> Add documentation to describe nuvoton ma35d1 reset driver.
>
> Signed-off-by: Jacky Huang <[email protected]>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> ---
> .../bindings/reset/nuvoton,ma35d1-reset.yaml | 45 ++++++++
> .../dt-bindings/reset/nuvoton,ma35d1-reset.h | 108 ++++++++++++++++++
> 2 files changed, 153 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/reset/nuvoton,ma35d1-reset.yaml
> create mode 100644 include/dt-bindings/reset/nuvoton,ma35d1-reset.h
>

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml

doc reference errors (make refcheckdocs):
Documentation/usb/gadget_uvc.rst: Documentation/userspace-api/media/v4l/pixfmt-packed.yuv.rst
MAINTAINERS: Documentation/devicetree/bindings/pwm/pwm-apple.yaml

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email protected]

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

2023-05-08 03:28:40

by Rob Herring (Arm)

Subject: Re: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

On Mon, 08 May 2023 02:59:32 +0000, Jacky Huang wrote:
> From: Jacky Huang <[email protected]>
>
> Add documentation that describes the nuvoton ma35d1 UART driver bindings.
>
> Signed-off-by: Jacky Huang <[email protected]>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> ---
> .../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
> 1 file changed, 48 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
>

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dts:25:18: fatal error: dt-bindings/clock/nuvoton,ma35d1-clk.h: No such file or directory
25 | #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dtb] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1512: dt_binding_check] Error 2

doc reference errors (make refcheckdocs):
Documentation/usb/gadget_uvc.rst: Documentation/userspace-api/media/v4l/pixfmt-packed.yuv.rst
MAINTAINERS: Documentation/devicetree/bindings/pwm/pwm-apple.yaml

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email protected]

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

2023-05-08 03:33:02

by Rob Herring (Arm)

Subject: Re: [PATCH v10 03/10] dt-bindings: clock: nuvoton: add binding for ma35d1 clock controller

On Mon, 08 May 2023 02:59:29 +0000, Jacky Huang wrote:
> From: Jacky Huang <[email protected]>
>
> Add the dt-bindings header for Nuvoton ma35d1, that gets shared
> between the clock controller and clock references in the dts.
> Add documentation to describe nuvoton ma35d1 clock driver.
>
> Signed-off-by: Jacky Huang <[email protected]>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> ---
> .../bindings/clock/nuvoton,ma35d1-clk.yaml | 63 +++++
> .../dt-bindings/clock/nuvoton,ma35d1-clk.h | 253 ++++++++++++++++++
> 2 files changed, 316 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
> create mode 100644 include/dt-bindings/clock/nuvoton,ma35d1-clk.h
>

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml

doc reference errors (make refcheckdocs):
Documentation/usb/gadget_uvc.rst: Documentation/userspace-api/media/v4l/pixfmt-packed.yuv.rst
MAINTAINERS: Documentation/devicetree/bindings/pwm/pwm-apple.yaml

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email protected]

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

2023-05-08 04:00:24

by Rob Herring (Arm)

Subject: Re: [PATCH v10 05/10] dt-bindings: arm: Add initial bindings for Nuvoton platform

On Mon, 08 May 2023 02:59:31 +0000, Jacky Huang wrote:
> From: Jacky Huang <[email protected]>
>
> Modify Nuvoton NPCM and MA35 platform board bindings
> - Move 'nuvoton,npcm-gcr.yaml' from 'bindings/arm/npcm' to
> 'bindings/soc/nuvoton'.
> - Rename the 'bindings/arm/npcm' directory to 'bindings/arm/nuvoton'.
> - Add bindings for ARMv8-based Nuvoton SoCs and platform boards, and
> include the initial bindings for ma35d1 series development boards.
>
> Modify MAINTAINERS
> - Remove the line for 'bindings/arm/npcm/' under ARM/NUVOTON NPCM, as it
> has been renamed.
> - Add ARM/NUVOTON MA35 for Nuvoton MA35 series SoCs maintainer and files.
>
> Signed-off-by: Jacky Huang <[email protected]>
> Reviewed-by: Krzysztof Kozlowski <[email protected]>
> Reviewed-by: Rob Herring <[email protected]>
> ---
> .../bindings/arm/nuvoton/nuvoton,ma35d1.yaml | 30 +++++++++++++++++++
> .../npcm.yaml => nuvoton/nuvoton,npcm.yaml} | 2 +-
> .../nuvoton/nuvoton,npcm-gcr.yaml} | 2 +-
> MAINTAINERS | 13 +++++++-
> 4 files changed, 44 insertions(+), 3 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/arm/nuvoton/nuvoton,ma35d1.yaml
> rename Documentation/devicetree/bindings/arm/{npcm/npcm.yaml => nuvoton/nuvoton,npcm.yaml} (93%)
> rename Documentation/devicetree/bindings/{arm/npcm/nuvoton,gcr.yaml => soc/nuvoton/nuvoton,npcm-gcr.yaml} (93%)
>

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml

doc reference errors (make refcheckdocs):
Documentation/usb/gadget_uvc.rst: Documentation/userspace-api/media/v4l/pixfmt-packed.yuv.rst
MAINTAINERS: Documentation/devicetree/bindings/pwm/pwm-apple.yaml

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/[email protected]

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.

2023-05-08 06:50:01

by Krzysztof Kozlowski

Subject: Re: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

On 08/05/2023 05:26, Rob Herring wrote:
>
> On Mon, 08 May 2023 02:59:32 +0000, Jacky Huang wrote:
>> From: Jacky Huang <[email protected]>
>>
>> Add documentation that describes the nuvoton ma35d1 UART driver bindings.
>>
>> Signed-off-by: Jacky Huang <[email protected]>
>> Reviewed-by: Krzysztof Kozlowski <[email protected]>
>> ---
>> .../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
>> 1 file changed, 48 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
>>
>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
> Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dts:25:18: fatal error: dt-bindings/clock/nuvoton,ma35d1-clk.h: No such file or directory
> 25 | #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> compilation terminated.
> make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dtb] Error 1

This however is related, although might be coming from earlier failure.
I assume you run the check and you do not see any errors?

Best regards,
Krzysztof

2023-05-08 06:52:26

by Krzysztof Kozlowski

Subject: Re: [PATCH v10 03/10] dt-bindings: clock: nuvoton: add binding for ma35d1 clock controller

On 08/05/2023 05:26, Rob Herring wrote:
>
> On Mon, 08 May 2023 02:59:29 +0000, Jacky Huang wrote:
>> From: Jacky Huang <[email protected]>
>>
>> Add the dt-bindings header for Nuvoton ma35d1, that gets shared
>> between the clock controller and clock references in the dts.
>> Add documentation to describe nuvoton ma35d1 clock driver.
>>
>> Signed-off-by: Jacky Huang <[email protected]>
>> Reviewed-by: Krzysztof Kozlowski <[email protected]>
>> ---
>> .../bindings/clock/nuvoton,ma35d1-clk.yaml | 63 +++++
>> .../dt-bindings/clock/nuvoton,ma35d1-clk.h | 253 ++++++++++++++++++
>> 2 files changed, 316 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/clock/nuvoton,ma35d1-clk.yaml
>> create mode 100644 include/dt-bindings/clock/nuvoton,ma35d1-clk.h
>>
>
> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>
> yamllint warnings/errors:
>
> dtschema/dtc warnings/errors:
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
>

These are unrelated, you can ignore them.

Best regards,
Krzysztof

2023-05-08 07:05:02

by Jacky Huang

Subject: Re: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

On 2023/5/8 下午 02:31, Krzysztof Kozlowski wrote:
> On 08/05/2023 05:26, Rob Herring wrote:
>> On Mon, 08 May 2023 02:59:32 +0000, Jacky Huang wrote:
>>> From: Jacky Huang <[email protected]>
>>>
>>> Add documentation that describes the nuvoton ma35d1 UART driver bindings.
>>>
>>> Signed-off-by: Jacky Huang <[email protected]>
>>> Reviewed-by: Krzysztof Kozlowski <[email protected]>
>>> ---
>>> .../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
>>> 1 file changed, 48 insertions(+)
>>> create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
>>>
>> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
>> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>>
>> yamllint warnings/errors:
>>
>> dtschema/dtc warnings/errors:
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
>> Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dts:25:18: fatal error: dt-bindings/clock/nuvoton,ma35d1-clk.h: No such file or directory
>> 25 | #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> compilation terminated.
>> make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dtb] Error 1
> This however is related, although might be coming from earlier failure.
> I assume you run the check and you do not see any errors?
>
> Best regards,
> Krzysztof
>

Dear Krzysztof,

Thank you for your review.

Of course I have run the check.
I did not see any errors, because I have
"dt-bindings/clock/nuvoton,ma35d1-clk.h".
This patch 6/10 depends on path 3/10 which include
"dt-bindings/clock/nuvoton,ma35d1-clk.h".
Should I combine this patch 6/10 into patch 3/10?


Best Regards,
Jacky Huang

2023-05-08 08:21:47

by Krzysztof Kozlowski

Subject: Re: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

On 08/05/2023 09:01, Jacky Huang wrote:
>
>
> On 2023/5/8 下午 02:31, Krzysztof Kozlowski wrote:
>> On 08/05/2023 05:26, Rob Herring wrote:
>>> On Mon, 08 May 2023 02:59:32 +0000, Jacky Huang wrote:
>>>> From: Jacky Huang <[email protected]>
>>>>
>>>> Add documentation that describes the nuvoton ma35d1 UART driver bindings.
>>>>
>>>> Signed-off-by: Jacky Huang <[email protected]>
>>>> Reviewed-by: Krzysztof Kozlowski <[email protected]>
>>>> ---
>>>> .../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
>>>> 1 file changed, 48 insertions(+)
>>>> create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
>>>>
>>> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
>>> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>>>
>>> yamllint warnings/errors:
>>>
>>> dtschema/dtc warnings/errors:
>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
>>> Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dts:25:18: fatal error: dt-bindings/clock/nuvoton,ma35d1-clk.h: No such file or directory
>>> 25 | #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>>> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>> compilation terminated.
>>> make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dtb] Error 1
>> This however is related, although might be coming from earlier failure.
>> I assume you run the check and you do not see any errors?
>>
>> Best regards,
>> Krzysztof
>>
>
> Dear Krzysztof,
>
> Thank you for your review.
>
> Of course I have run the check.
> I did not see any errors, because I have
> "dt-bindings/clock/nuvoton,ma35d1-clk.h".
> This patch 6/10 depends on path 3/10 which include
> "dt-bindings/clock/nuvoton,ma35d1-clk.h".
> Should I combine this patch 6/10 into patch 3/10?

No, it's fine. If you got the reviews and acks and no reports from
kernel test robot, you can go in few days with Arnd's request and send
everything to soc@.

Best regards,
Krzysztof

2023-05-08 08:27:51

by Philipp Zabel

Subject: Re: [PATCH v10 09/10] reset: Add Nuvoton ma35d1 reset driver support

On Mo, 2023-05-08 at 02:59 +0000, Jacky Huang wrote:
> From: Jacky Huang <[email protected]>
>
> This driver supports individual IP reset for ma35d1. The reset
> control registers is a subset of system control registers.
>
> Signed-off-by: Jacky Huang <[email protected]>

Reviewed-by: Philipp Zabel <[email protected]>

regards
Philipp

2023-05-08 08:34:23

by Jacky Huang

Subject: Re: [PATCH v10 06/10] dt-bindings: serial: Document ma35d1 uart controller

On 2023/5/8 下午 04:05, Krzysztof Kozlowski wrote:
> On 08/05/2023 09:01, Jacky Huang wrote:
>>
>> On 2023/5/8 下午 02:31, Krzysztof Kozlowski wrote:
>>> On 08/05/2023 05:26, Rob Herring wrote:
>>>> On Mon, 08 May 2023 02:59:32 +0000, Jacky Huang wrote:
>>>>> From: Jacky Huang <[email protected]>
>>>>>
>>>>> Add documentation that describes the nuvoton ma35d1 UART driver bindings.
>>>>>
>>>>> Signed-off-by: Jacky Huang <[email protected]>
>>>>> Reviewed-by: Krzysztof Kozlowski <[email protected]>
>>>>> ---
>>>>> .../serial/nuvoton,ma35d1-serial.yaml | 48 +++++++++++++++++++
>>>>> 1 file changed, 48 insertions(+)
>>>>> create mode 100644 Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.yaml
>>>>>
>>>> My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
>>>> on your patch (DT_CHECKER_FLAGS is new in v5.13):
>>>>
>>>> yamllint warnings/errors:
>>>>
>>>> dtschema/dtc warnings/errors:
>>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.example.dtb: camera-sensor@3c: port:endpoint:data-lanes: [[1]] is too short
>>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/rockchip-isp1.example.dtb: camera@3c: port:endpoint:data-lanes: [[1]] is too short
>>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/media/i2c/ovti,ov2685.yaml
>>>> /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.example.dtb: pcie-ep@33800000: Unevaluated properties are not allowed ('assigned-clock-parents', 'assigned-clock-rates', 'assigned-clocks' were unexpected)
>>>> From schema: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie-ep.yaml
>>>> Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dts:25:18: fatal error: dt-bindings/clock/nuvoton,ma35d1-clk.h: No such file or directory
>>>> 25 | #include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>>>> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>>> compilation terminated.
>>>> make[1]: *** [scripts/Makefile.lib:419: Documentation/devicetree/bindings/serial/nuvoton,ma35d1-serial.example.dtb] Error 1
>>> This however is related, although might be coming from earlier failure.
>>> I assume you run the check and you do not see any errors?
>>>
>>> Best regards,
>>> Krzysztof
>>>
>> Dear Krzysztof,
>>
>> Thank you for your review.
>>
>> Of course I have run the check.
>> I did not see any errors, because I have
>> "dt-bindings/clock/nuvoton,ma35d1-clk.h".
>> This patch 6/10 depends on path 3/10 which include
>> "dt-bindings/clock/nuvoton,ma35d1-clk.h".
>> Should I combine this patch 6/10 into patch 3/10?
> No, it's fine. If you got the reviews and acks and no reports from
> kernel test robot, you can go in few days with Arnd's request and send
> everything to soc@.
>
> Best regards,
> Krzysztof
>

Dear Krzysztof,

I got it. Thank you very much.


Best Regards,
Jacky Huang

2023-05-08 11:07:22

by Ilpo Järvinen

Subject: Re: [PATCH v10 08/10] clk: nuvoton: Add clock driver for ma35d1 clock controller

On Mon, 8 May 2023, Jacky Huang wrote:

> From: Jacky Huang <[email protected]>
>
> The clock controller generates clocks for the whole chip, including
> system clocks and all peripheral clocks. This driver support ma35d1
> clock gating, divider, and individual PLL configuration.
>
> There are 6 PLLs in ma35d1 SoC:
> - CA-PLL for the two Cortex-A35 CPU clock
> - SYS-PLL for system bus, which comes from the companion MCU
> and cannot be programmed by clock controller.
> - DDR-PLL for DDR
> - EPLL for GMAC and GFX, Display, and VDEC IPs.
> - VPLL for video output pixel clock
> - APLL for SDHC, I2S audio, and other IPs.
> CA-PLL has only one operation mode.
> DDR-PLL, EPLL, VPLL, and APLL are advanced PLLs which have 3
> operation modes: integer mode, fraction mode, and spread specturm mode.
>
> Signed-off-by: Jacky Huang <[email protected]>
> Acked-by: Krzysztof Kozlowski <[email protected]>
> ---

Hi,

A few small things still below.

> diff --git a/drivers/clk/nuvoton/clk-ma35d1-divider.c b/drivers/clk/nuvoton/clk-ma35d1-divider.c
> new file mode 100644
> index 000000000000..0d4d8186a85c
> --- /dev/null
> +++ b/drivers/clk/nuvoton/clk-ma35d1-divider.c
> @@ -0,0 +1,140 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (C) 2023 Nuvoton Technology Corp.
> + * Author: Chi-Fang Li <[email protected]>
> + */
> +
> +#include <linux/clk-provider.h>
> +#include <linux/device.h>
> +#include <linux/regmap.h>
> +#include <linux/spinlock.h>
> +
> +struct ma35d1_adc_clk_div {
> + struct clk_hw hw;
> + void __iomem *reg;
> + u8 shift;
> + u8 width;
> + u32 mask;
> + const struct clk_div_table *table;
> + /* protects concurrent access to clock divider registers */
> + spinlock_t *lock;
> +};
> +
> +struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
> + struct clk_hw *parent_hw, spinlock_t *lock,
> + unsigned long flags, void __iomem *reg,
> + u8 shift, u8 width, u32 mask_bit);
> +
> +static inline struct ma35d1_adc_clk_div *to_ma35d1_adc_clk_div(struct clk_hw *_hw)
> +{
> + return container_of(_hw, struct ma35d1_adc_clk_div, hw);
> +}
> +
> +static inline unsigned long ma35d1_clkdiv_recalc_rate(struct clk_hw *hw,
> + unsigned long parent_rate)
> +{
> + unsigned int val;
> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
> +
> + val = readl_relaxed(dclk->reg) >> dclk->shift;
> + val &= clk_div_mask(dclk->width);
> + val += 1;
> + return divider_recalc_rate(hw, parent_rate, val, dclk->table,
> + CLK_DIVIDER_ROUND_CLOSEST, dclk->width);
> +}
> +
> +static inline long ma35d1_clkdiv_round_rate(struct clk_hw *hw,
> + unsigned long rate,
> + unsigned long *prate)
> +{
> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
> +
> + return divider_round_rate(hw, rate, prate, dclk->table,
> + dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
> +}
> +
> +static inline int ma35d1_clkdiv_set_rate(struct clk_hw *hw,
> + unsigned long rate,
> + unsigned long parent_rate)
> +{
> + int value;
> + unsigned long flags = 0;
> + u32 data;
> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
> +
> + value = divider_get_val(rate, parent_rate, dclk->table,
> + dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
> +
> + spin_lock_irqsave(dclk->lock, flags);
> +
> + data = readl_relaxed(dclk->reg);
> + data &= ~(clk_div_mask(dclk->width) << dclk->shift);
> + data |= (value - 1) << dclk->shift;
> + data |= dclk->mask;
> + writel_relaxed(data, dclk->reg);
> +
> + spin_unlock_irqrestore(dclk->lock, flags);
> + return 0;
> +}
> +
> +static const struct clk_ops ma35d1_adc_clkdiv_ops = {
> + .recalc_rate = ma35d1_clkdiv_recalc_rate,
> + .round_rate = ma35d1_clkdiv_round_rate,
> + .set_rate = ma35d1_clkdiv_set_rate,
> +};
> +
> +struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
> + struct clk_hw *parent_hw, spinlock_t *lock,
> + unsigned long flags, void __iomem *reg,
> + u8 shift, u8 width, u32 mask_bit)
> +{
> + struct ma35d1_adc_clk_div *div;
> + struct clk_init_data init;
> + struct clk_div_table *table;
> + struct clk_parent_data pdata = { .index = 0 };
> + u32 max_div, min_div;
> + struct clk_hw *hw;
> + int ret;
> + int i;
> +
> + div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
> + if (!div)
> + return ERR_PTR(-ENOMEM);
> +
> + max_div = clk_div_mask(width) + 1;
> + min_div = 1;
> +
> + table = devm_kcalloc(dev, max_div + 1, sizeof(*table), GFP_KERNEL);
> + if (!table)
> + return ERR_PTR(-ENOMEM);
> +
> + for (i = 0; i < max_div; i++) {
> + table[i].val = min_div + i;
> + table[i].div = 2 * table[i].val;
> + }
> + table[max_div].val = 0;
> + table[max_div].div = 0;
> +
> + memset(&init, 0, sizeof(init));
> + init.name = name;
> + init.ops = &ma35d1_adc_clkdiv_ops;
> + init.flags |= flags;
> + pdata.hw = parent_hw;
> + init.parent_data = &pdata;
> + init.num_parents = 1;
> +
> + div->reg = reg;
> + div->shift = shift;
> + div->width = width;
> + div->mask = mask_bit ? BIT(mask_bit) : 0;
> + div->lock = lock;
> + div->hw.init = &init;
> + div->table = table;
> +
> + hw = &div->hw;
> + ret = devm_clk_hw_register(dev, hw);
> + if (ret)
> + return ERR_PTR(ret);
> + return hw;
> +}
> +EXPORT_SYMBOL_GPL(ma35d1_reg_adc_clkdiv);
> diff --git a/drivers/clk/nuvoton/clk-ma35d1-pll.c b/drivers/clk/nuvoton/clk-ma35d1-pll.c
> new file mode 100644
> index 000000000000..a9981db0a54a
> --- /dev/null
> +++ b/drivers/clk/nuvoton/clk-ma35d1-pll.c
> @@ -0,0 +1,365 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (C) 2023 Nuvoton Technology Corp.
> + * Author: Chi-Fang Li <[email protected]>
> + */
> +
> +#include <linux/bitfield.h>
> +#include <linux/clk-provider.h>
> +#include <linux/container_of.h>
> +#include <linux/device.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/math64.h>
> +#include <linux/slab.h>
> +#include <linux/units.h>
> +#include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
> +
> +/* PLL frequency limits */
> +#define PLL_FREF_MAX_FREQ (200 * HZ_PER_MHZ)
> +#define PLL_FREF_MIN_FREQ (1 * HZ_PER_MHZ)
> +#define PLL_FREF_M_MAX_FREQ (40 * HZ_PER_MHZ)
> +#define PLL_FREF_M_MIN_FREQ (10 * HZ_PER_MHZ)
> +#define PLL_FCLK_MAX_FREQ (2400 * HZ_PER_MHZ)
> +#define PLL_FCLK_MIN_FREQ (600 * HZ_PER_MHZ)
> +#define PLL_FCLKO_MAX_FREQ (2400 * HZ_PER_MHZ)
> +#define PLL_FCLKO_MIN_FREQ (85700 * HZ_PER_KHZ)
> +#define PLL_SS_RATE 0x77
> +#define PLL_SLOPE 0x58CFA
> +
> +#define REG_PLL_CTL0_OFFSET 0x0
> +#define REG_PLL_CTL1_OFFSET 0x4
> +#define REG_PLL_CTL2_OFFSET 0x8
> +
> +/* bit fields for REG_CLK_PLL0CTL0, which is SMIC PLL design */
> +#define SPLL0_CTL0_FBDIV GENMASK(7, 0)
> +#define SPLL0_CTL0_INDIV GENMASK(11, 8)
> +#define SPLL0_CTL0_OUTDIV GENMASK(13, 12)
> +#define SPLL0_CTL0_PD BIT(16)
> +#define SPLL0_CTL0_BP BIT(17)
> +
> +/* bit fields for REG_CLK_PLLxCTL0 ~ REG_CLK_PLLxCTL2, where x = 2 ~ 5 */
> +#define PLL_CTL0_FBDIV GENMASK(10, 0)
> +#define PLL_CTL0_INDIV GENMASK(17, 12)
> +#define PLL_CTL0_MODE GENMASK(19, 18)
> +#define PLL_CTL0_SSRATE GENMASK(30, 20)
> +#define PLL_CTL1_PD BIT(0)
> +#define PLL_CTL1_BP BIT(1)
> +#define PLL_CTL1_OUTDIV GENMASK(6, 4)
> +#define PLL_CTL1_FRAC GENMASK(31, 24)
> +#define PLL_CTL2_SLOPE GENMASK(23, 0)
> +
> +#define INDIV_MIN 1
> +#define INDIV_MAX 63
> +#define FBDIV_MIN 16
> +#define FBDIV_MAX 2047
> +#define FBDIV_FRAC_MIN 1600
> +#define FBDIV_FRAC_MAX 204700
> +#define OUTDIV_MIN 1
> +#define OUTDIV_MAX 7
> +
> +#define PLL_MODE_INT 0
> +#define PLL_MODE_FRAC 1
> +#define PLL_MODE_SS 2
> +
> +struct ma35d1_clk_pll {
> + struct clk_hw hw;
> + u32 id;
> + u8 mode;
> + void __iomem *ctl0_base;
> + void __iomem *ctl1_base;
> + void __iomem *ctl2_base;
> +};
> +
> +struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
> + struct clk_hw *parent_hw, void __iomem *base);
> +
> +static inline struct ma35d1_clk_pll *to_ma35d1_clk_pll(struct clk_hw *_hw)
> +{
> + return container_of(_hw, struct ma35d1_clk_pll, hw);
> +}
> +
> +static unsigned long ma35d1_calc_smic_pll_freq(u32 pll0_ctl0,
> + unsigned long parent_rate)
> +{
> + const u32 clk_div_table[] = { 1, 2, 4, 8 };

This is just 1 << n so the table doesn't seem necessary.

> + u32 m, n, p, outdiv;
> + u64 pll_freq;
> +
> + if (pll0_ctl0 & SPLL0_CTL0_BP)
> + return parent_rate;
> +
> + n = FIELD_GET(SPLL0_CTL0_FBDIV, pll0_ctl0);
> + m = FIELD_GET(SPLL0_CTL0_INDIV, pll0_ctl0);
> + p = FIELD_GET(SPLL0_CTL0_OUTDIV, pll0_ctl0);
> + outdiv = clk_div_table[p];
> + pll_freq = (u64)parent_rate * n;
> + div_u64(pll_freq, m * outdiv);
> + return pll_freq;
> +}
> +
> +static unsigned long ma35d1_calc_pll_freq(u8 mode, u32 *reg_ctl, unsigned long parent_rate)
> +{
> + unsigned long pll_freq, x;
> + u32 m, n, p;
> +
> + if (reg_ctl[1] & PLL_CTL1_BP)
> + return parent_rate;
> +
> + n = FIELD_GET(PLL_CTL0_FBDIV, reg_ctl[0]);
> + m = FIELD_GET(PLL_CTL0_INDIV, reg_ctl[0]);
> + p = FIELD_GET(PLL_CTL1_OUTDIV, reg_ctl[1]);
> +
> + if (mode == PLL_MODE_INT) {
> + pll_freq = (u64)parent_rate * n;
> + div_u64(pll_freq, m * p);
> + } else {
> + x = FIELD_GET(PLL_CTL1_FRAC, reg_ctl[1]);
> + /* 2 decimal places floating to integer (ex. 1.23 to 123) */
> + n = n * 100 + ((x * 100) / FIELD_MAX(PLL_CTL1_FRAC));
> +
> + /* pll_freq = parent_rate * n / 100 / m / p */

Repeats what the code does, drop.

> + pll_freq = div_u64(parent_rate * n, 100 * m * p);
> + }
> + return pll_freq;
> +}
> +
> +static int ma35d1_pll_find_closest(struct ma35d1_clk_pll *pll, unsigned long rate,
> + unsigned long parent_rate, u32 *reg_ctl,
> + unsigned long *freq)
> +{
> + unsigned long min_diff = ULONG_MAX;
> + int fbdiv_min, fbdiv_max;
> + int p, m, n;
> +
> + *freq = 0;
> + if (rate < PLL_FCLKO_MIN_FREQ || rate > PLL_FCLKO_MAX_FREQ)
> + return -EINVAL;
> +
> + if (pll->mode == PLL_MODE_INT) {
> + fbdiv_min = FBDIV_MIN;
> + fbdiv_max = FBDIV_MAX;
> + } else {
> + fbdiv_min = FBDIV_FRAC_MIN;
> + fbdiv_max = FBDIV_FRAC_MAX;
> + }
> +
> + for (m = INDIV_MIN; m <= INDIV_MAX; m++) {
> + for (n = fbdiv_min; n <= fbdiv_max; n++) {
> + for (p = OUTDIV_MIN; p <= OUTDIV_MAX; p++) {
> + unsigned long tmp, fout, fclk, diff;
> +
> + tmp = div_u64(parent_rate, m);
> + if (tmp < PLL_FREF_M_MIN_FREQ ||
> + tmp > PLL_FREF_M_MAX_FREQ)
> + continue; /* constrain */
> +
> + fclk = div_u64(parent_rate * n, m);
> + /* for 2 decimal places */
> + if (pll->mode != PLL_MODE_INT)
> + fclk = div_u64(fclk, 100);
> +
> + if (fclk < PLL_FCLK_MIN_FREQ ||
> + fclk > PLL_FCLK_MAX_FREQ)
> + continue; /* constrain */
> +
> + fout = div_u64(fclk, p);
> + if (fout < PLL_FCLKO_MIN_FREQ ||
> + fout > PLL_FCLKO_MAX_FREQ)
> + continue; /* constrain */
> +
> + diff = abs(rate - fout);
> + if (diff < min_diff) {
> + reg_ctl[0] = FIELD_PREP(PLL_CTL0_INDIV, m) |
> + FIELD_PREP(PLL_CTL0_FBDIV, n);
> + reg_ctl[1] = FIELD_PREP(PLL_CTL1_OUTDIV, p);
> + *freq = fout;
> + min_diff = diff;
> + if (min_diff == 0)
> + break;
> + }
> + }
> + }
> + }
> + if (*freq == 0)
> + return -EINVAL; /* cannot find even one valid setting */
> + return 0;
> +}
> +
> +static int ma35d1_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long parent_rate)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 reg_ctl[3] = { 0 };
> + unsigned long pll_freq;
> + int ret;
> +
> + if (parent_rate < PLL_FREF_MIN_FREQ ||
> + parent_rate > PLL_FREF_MAX_FREQ)

One line.

> + return -EINVAL;
> +
> + ret = ma35d1_pll_find_closest(pll, rate, parent_rate, reg_ctl, &pll_freq);
> + if (ret != 0)
> + return ret;
> +
> + switch (pll->mode) {
> + case PLL_MODE_INT:
> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_INT);
> + break;
> + case PLL_MODE_FRAC:
> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_FRAC);
> + break;
> + case PLL_MODE_SS:
> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_SS) |
> + FIELD_PREP(PLL_CTL0_SSRATE, PLL_SS_RATE);
> + reg_ctl[2] = FIELD_PREP(PLL_CTL2_SLOPE, PLL_SLOPE);
> + break;
> + }
> + reg_ctl[1] |= PLL_CTL1_PD;
> +
> + writel_relaxed(reg_ctl[0], pll->ctl0_base);
> + writel_relaxed(reg_ctl[1], pll->ctl1_base);
> + writel_relaxed(reg_ctl[2], pll->ctl2_base);
> + return 0;
> +}
> +
> +static unsigned long ma35d1_clk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 reg_ctl[3];
> + unsigned long pll_freq;
> +
> + if (parent_rate < PLL_FREF_MIN_FREQ || parent_rate > PLL_FREF_MAX_FREQ)
> + return 0;
> +
> + switch (pll->id) {
> + case CAPLL:
> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
> + pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], parent_rate);
> + return pll_freq;
> + case DDRPLL:
> + case APLL:
> + case EPLL:
> + case VPLL:
> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
> + reg_ctl[1] = readl_relaxed(pll->ctl1_base);
> + pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, parent_rate);
> + return pll_freq;
> + }
> + return 0;
> +}
> +
> +static long ma35d1_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
> + unsigned long *parent_rate)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 reg_ctl[3] = { 0 };
> + unsigned long pll_freq;
> + long ret;
> +
> + if (*parent_rate < PLL_FREF_MIN_FREQ || *parent_rate > PLL_FREF_MAX_FREQ)
> + return -EINVAL;
> +
> + ret = ma35d1_pll_find_closest(pll, rate, *parent_rate, reg_ctl, &pll_freq);
> + if (ret != 0)

< 0

> + return ret;
> +
> + switch (pll->id) {
> + case CAPLL:
> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
> + pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], *parent_rate);
> + return pll_freq;
> + case DDRPLL:
> + case APLL:
> + case EPLL:
> + case VPLL:
> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
> + reg_ctl[1] = readl_relaxed(pll->ctl1_base);
> + pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, *parent_rate);
> + return pll_freq;
> + }
> + return 0;
> +}
> +
> +static int ma35d1_clk_pll_is_prepared(struct clk_hw *hw)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 val = readl_relaxed(pll->ctl1_base);
> +
> + return !(val & PLL_CTL1_PD);
> +}
> +
> +static int ma35d1_clk_pll_prepare(struct clk_hw *hw)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 val;
> +
> + val = readl_relaxed(pll->ctl1_base);
> + val &= ~PLL_CTL1_PD;
> + writel_relaxed(val, pll->ctl1_base);
> + return 0;
> +}
> +
> +static void ma35d1_clk_pll_unprepare(struct clk_hw *hw)
> +{
> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
> + u32 val;
> +
> + val = readl_relaxed(pll->ctl1_base);
> + val |= PLL_CTL1_PD;
> + writel_relaxed(val, pll->ctl1_base);
> +}
> +
> +static const struct clk_ops ma35d1_clk_pll_ops = {
> + .is_prepared = ma35d1_clk_pll_is_prepared,
> + .prepare = ma35d1_clk_pll_prepare,
> + .unprepare = ma35d1_clk_pll_unprepare,
> + .set_rate = ma35d1_clk_pll_set_rate,
> + .recalc_rate = ma35d1_clk_pll_recalc_rate,
> + .round_rate = ma35d1_clk_pll_round_rate,
> +};
> +
> +static const struct clk_ops ma35d1_clk_fixed_pll_ops = {
> + .recalc_rate = ma35d1_clk_pll_recalc_rate,
> + .round_rate = ma35d1_clk_pll_round_rate,
> +};
> +
> +struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
> + struct clk_hw *parent_hw, void __iomem *base)
> +{
> + struct clk_parent_data pdata = { .index = 0 };
> + struct clk_init_data init = {};
> + struct ma35d1_clk_pll *pll;
> + struct clk_hw *hw;
> + int ret;
> +
> + pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
> + if (!pll)
> + return ERR_PTR(-ENOMEM);
> +
> + pll->id = id;
> + pll->mode = u8mode;
> + pll->ctl0_base = base + REG_PLL_CTL0_OFFSET;
> + pll->ctl1_base = base + REG_PLL_CTL1_OFFSET;
> + pll->ctl2_base = base + REG_PLL_CTL2_OFFSET;
> +
> + init.name = name;
> + init.flags = 0;
> + pdata.hw = parent_hw;
> + init.parent_data = &pdata;
> + init.num_parents = 1;
> +
> + if (id == CAPLL || id == DDRPLL)
> + init.ops = &ma35d1_clk_fixed_pll_ops;
> + else
> + init.ops = &ma35d1_clk_pll_ops;
> +
> + pll->hw.init = &init;
> + hw = &pll->hw;
> +
> + ret = devm_clk_hw_register(dev, hw);
> + if (ret)
> + return ERR_PTR(ret);
> + return hw;
> +}
> +EXPORT_SYMBOL_GPL(ma35d1_reg_clk_pll);

> diff --git a/drivers/clk/nuvoton/clk-ma35d1.c b/drivers/clk/nuvoton/clk-ma35d1.c
> new file mode 100644
> index 000000000000..68fbaf2f4945
> --- /dev/null
> +++ b/drivers/clk/nuvoton/clk-ma35d1.c
> @@ -0,0 +1,948 @@

> +static inline struct clk_hw *ma35d1_clk_fixed(const char *name, int rate)
> +{
> + return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_mux_parent(struct device *dev,
> + const char *name,
> + void __iomem *reg,
> + u8 shift, u8 width,
> + const struct clk_parent_data *pdata,
> + int num_pdata)
> +{
> + return clk_hw_register_mux_parent_data(dev, name, pdata, num_pdata,
> + CLK_SET_RATE_NO_REPARENT, reg, shift,
> + width, 0, &ma35d1_lock);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_mux(struct device *dev,
> + const char *name,
> + void __iomem *reg,
> + u8 shift, u8 width,
> + const char *const *parents,
> + int num_parents)
> +{
> + return devm_clk_hw_register_mux(dev, name, parents, num_parents,
> + CLK_SET_RATE_NO_REPARENT, reg, shift,
> + width, 0, &ma35d1_lock);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_divider(struct device *dev,
> + const char *name,
> + const char *parent,
> + void __iomem *reg, u8 shift,
> + u8 width)
> +{
> + return devm_clk_hw_register_divider(dev, name, parent, CLK_SET_RATE_PARENT,
> + reg, shift, width, 0, &ma35d1_lock);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_divider_pow2(struct device *dev,
> + const char *name,
> + const char *parent,
> + void __iomem *reg,
> + u8 shift, u8 width)
> +{
> + return devm_clk_hw_register_divider(dev, name, parent,
> + CLK_DIVIDER_POWER_OF_TWO, reg, shift,
> + width, 0, &ma35d1_lock);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_divider_table(struct device *dev,
> + const char *name,
> + const char *parent,
> + void __iomem *reg,
> + u8 shift, u8 width,
> + const struct clk_div_table *table)
> +{
> + return devm_clk_hw_register_divider_table(dev, name, parent, 0,
> + reg, shift, width, 0,
> + table, &ma35d1_lock);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_fixed_factor(struct device *dev,
> + const char *name,
> + const char *parent,
> + unsigned int mult,
> + unsigned int div)
> +{
> + return devm_clk_hw_register_fixed_factor(dev, name, parent,
> + CLK_SET_RATE_PARENT, mult, div);
> +}
> +
> +static inline struct clk_hw *ma35d1_clk_gate(struct device *dev,
> + const char *name,
> + const char *parent,
> + void __iomem *reg, u8 shift)
> +{
> + return devm_clk_hw_register_gate(dev, name, parent, CLK_SET_RATE_PARENT,
> + reg, shift, 0, &ma35d1_lock);
> +}

Inline is not something that should be used that much in .c files, just
leave it up to the compiler to decide whether to inline or not. There were
some other inlines in the other file I noted later but I didn't mark them
but please check their inline usage too.

> +static int ma35d1_get_pll_setting(struct device_node *clk_node, u32 *pllmode)
> +{
> + const char *of_str;
> + int i;
> +
> + for (i = 0; i < PLL_MAX_NUM; i++) {
> + if (of_property_read_string_index(clk_node, "nuvoton,pll-mode", i, &of_str))
> + return -EINVAL;
> + if (!strcmp(of_str, "integer"))
> + pllmode[i] = PLL_MODE_INT;
> + else if (!strcmp(of_str, "fractional"))
> + pllmode[i] = PLL_MODE_FRAC;
> + else if (!strcmp(of_str, "spread-spectrum"))
> + pllmode[i] = PLL_MODE_SS;
> + else
> + return -EINVAL;
> + }
> + return 0;
> +}
> +
> +static int ma35d1_clocks_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct device_node *clk_node = pdev->dev.of_node;
> + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + void __iomem *clk_base;
> + static struct clk_hw **hws;
> + static struct clk_hw_onecell_data *ma35d1_hw_data;
> + u32 pllmode[PLL_MAX_NUM];
> + int ret;
> +
> + ma35d1_hw_data = devm_kzalloc(dev,
> + struct_size(ma35d1_hw_data, hws, CLK_MAX_IDX),
> + GFP_KERNEL);
> + if (WARN_ON(!ma35d1_hw_data))

Alloc error should not be WARN_ON()'ed, it's not a bug. If you want to
notify about normal (non-programming) errors, use dev_err() instead.

> + return -ENOMEM;
> +
> + ma35d1_hw_data->num = CLK_MAX_IDX;
> + hws = ma35d1_hw_data->hws;
> +
> + clk_base = devm_ioremap_resource(dev, res);
> + if (IS_ERR(clk_base))
> + return PTR_ERR(clk_base);
> +
> + ret = ma35d1_get_pll_setting(clk_node, pllmode);
> + if (ret < 0) {
> + dev_err(dev, "Invalid PLL setting!\n");
> + return -EINVAL;
> + }


--
i.

2023-05-08 11:55:03

by Ilpo Järvinen

Subject: Re: [PATCH v10 09/10] reset: Add Nuvoton ma35d1 reset driver support

On Mon, 8 May 2023, Jacky Huang wrote:

> From: Jacky Huang <[email protected]>
>
> This driver supports individual IP reset for ma35d1. The reset
> control registers is a subset of system control registers.

registers are

> Signed-off-by: Jacky Huang <[email protected]>
> ---

> diff --git a/drivers/reset/reset-ma35d1.c b/drivers/reset/reset-ma35d1.c
> new file mode 100644
> index 000000000000..19ed323981df
> --- /dev/null
> +++ b/drivers/reset/reset-ma35d1.c
> @@ -0,0 +1,234 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * Copyright (C) 2023 Nuvoton Technology Corp.
> + * Author: Chi-Fang Li <[email protected]>
> + */
> +
> +#include <linux/bits.h>
> +#include <linux/container_of.h>
> +#include <linux/device.h>
> +#include <linux/err.h>
> +#include <linux/io.h>
> +#include <linux/kernel.h>
> +#include <linux/of.h>
> +#include <linux/platform_device.h>
> +#include <linux/reboot.h>
> +#include <linux/reset-controller.h>
> +#include <linux/spinlock.h>
> +#include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
> +
> +struct ma35d1_reset_data {
> + struct reset_controller_dev rcdev;
> + struct notifier_block restart_handler;
> + void __iomem *base;
> + spinlock_t lock;

Please add a comment about what this protects. After adding that, feel
free to add also:

Reviewed-by: Ilpo J?rvinen <[email protected]>


--
i.

2023-05-09 01:20:39

by Jacky Huang

Subject: Re: [PATCH v10 08/10] clk: nuvoton: Add clock driver for ma35d1 clock controller

Dear Ilpo,


Thank you for the advice.


On 2023/5/8 下午 06:52, Ilpo Järvinen wrote:
> On Mon, 8 May 2023, Jacky Huang wrote:
>
>> From: Jacky Huang<[email protected]>
>>
>> The clock controller generates clocks for the whole chip, including
>> system clocks and all peripheral clocks. This driver support ma35d1
>> clock gating, divider, and individual PLL configuration.
>>
>> There are 6 PLLs in ma35d1 SoC:
>> - CA-PLL for the two Cortex-A35 CPU clock
>> - SYS-PLL for system bus, which comes from the companion MCU
>> and cannot be programmed by clock controller.
>> - DDR-PLL for DDR
>> - EPLL for GMAC and GFX, Display, and VDEC IPs.
>> - VPLL for video output pixel clock
>> - APLL for SDHC, I2S audio, and other IPs.
>> CA-PLL has only one operation mode.
>> DDR-PLL, EPLL, VPLL, and APLL are advanced PLLs which have 3
>> operation modes: integer mode, fraction mode, and spread specturm mode.
>>
>> Signed-off-by: Jacky Huang<[email protected]>
>> Acked-by: Krzysztof Kozlowski<[email protected]>
>> ---
> Hi,
>
> A few small things still below.
>
>> diff --git a/drivers/clk/nuvoton/clk-ma35d1-divider.c b/drivers/clk/nuvoton/clk-ma35d1-divider.c
>> new file mode 100644
>> index 000000000000..0d4d8186a85c
>> --- /dev/null
>> +++ b/drivers/clk/nuvoton/clk-ma35d1-divider.c
>> @@ -0,0 +1,140 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Copyright (C) 2023 Nuvoton Technology Corp.
>> + * Author: Chi-Fang Li<[email protected]>
>> + */
>> +
>> +#include <linux/clk-provider.h>
>> +#include <linux/device.h>
>> +#include <linux/regmap.h>
>> +#include <linux/spinlock.h>
>> +
>> +struct ma35d1_adc_clk_div {
>> + struct clk_hw hw;
>> + void __iomem *reg;
>> + u8 shift;
>> + u8 width;
>> + u32 mask;
>> + const struct clk_div_table *table;
>> + /* protects concurrent access to clock divider registers */
>> + spinlock_t *lock;
>> +};
>> +
>> +struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
>> + struct clk_hw *parent_hw, spinlock_t *lock,
>> + unsigned long flags, void __iomem *reg,
>> + u8 shift, u8 width, u32 mask_bit);
>> +
>> +static inline struct ma35d1_adc_clk_div *to_ma35d1_adc_clk_div(struct clk_hw *_hw)
>> +{
>> + return container_of(_hw, struct ma35d1_adc_clk_div, hw);
>> +}
>> +
>> +static inline unsigned long ma35d1_clkdiv_recalc_rate(struct clk_hw *hw,
>> + unsigned long parent_rate)
>> +{
>> + unsigned int val;
>> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
>> +
>> + val = readl_relaxed(dclk->reg) >> dclk->shift;
>> + val &= clk_div_mask(dclk->width);
>> + val += 1;
>> + return divider_recalc_rate(hw, parent_rate, val, dclk->table,
>> + CLK_DIVIDER_ROUND_CLOSEST, dclk->width);
>> +}
>> +
>> +static inline long ma35d1_clkdiv_round_rate(struct clk_hw *hw,
>> + unsigned long rate,
>> + unsigned long *prate)
>> +{
>> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
>> +
>> + return divider_round_rate(hw, rate, prate, dclk->table,
>> + dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
>> +}
>> +
>> +static inline int ma35d1_clkdiv_set_rate(struct clk_hw *hw,
>> + unsigned long rate,
>> + unsigned long parent_rate)
>> +{
>> + int value;
>> + unsigned long flags = 0;
>> + u32 data;
>> + struct ma35d1_adc_clk_div *dclk = to_ma35d1_adc_clk_div(hw);
>> +
>> + value = divider_get_val(rate, parent_rate, dclk->table,
>> + dclk->width, CLK_DIVIDER_ROUND_CLOSEST);
>> +
>> + spin_lock_irqsave(dclk->lock, flags);
>> +
>> + data = readl_relaxed(dclk->reg);
>> + data &= ~(clk_div_mask(dclk->width) << dclk->shift);
>> + data |= (value - 1) << dclk->shift;
>> + data |= dclk->mask;
>> + writel_relaxed(data, dclk->reg);
>> +
>> + spin_unlock_irqrestore(dclk->lock, flags);
>> + return 0;
>> +}
>> +
>> +static const struct clk_ops ma35d1_adc_clkdiv_ops = {
>> + .recalc_rate = ma35d1_clkdiv_recalc_rate,
>> + .round_rate = ma35d1_clkdiv_round_rate,
>> + .set_rate = ma35d1_clkdiv_set_rate,
>> +};
>> +
>> +struct clk_hw *ma35d1_reg_adc_clkdiv(struct device *dev, const char *name,
>> + struct clk_hw *parent_hw, spinlock_t *lock,
>> + unsigned long flags, void __iomem *reg,
>> + u8 shift, u8 width, u32 mask_bit)
>> +{
>> + struct ma35d1_adc_clk_div *div;
>> + struct clk_init_data init;
>> + struct clk_div_table *table;
>> + struct clk_parent_data pdata = { .index = 0 };
>> + u32 max_div, min_div;
>> + struct clk_hw *hw;
>> + int ret;
>> + int i;
>> +
>> + div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
>> + if (!div)
>> + return ERR_PTR(-ENOMEM);
>> +
>> + max_div = clk_div_mask(width) + 1;
>> + min_div = 1;
>> +
>> + table = devm_kcalloc(dev, max_div + 1, sizeof(*table), GFP_KERNEL);
>> + if (!table)
>> + return ERR_PTR(-ENOMEM);
>> +
>> + for (i = 0; i < max_div; i++) {
>> + table[i].val = min_div + i;
>> + table[i].div = 2 * table[i].val;
>> + }
>> + table[max_div].val = 0;
>> + table[max_div].div = 0;
>> +
>> + memset(&init, 0, sizeof(init));
>> + init.name = name;
>> + init.ops = &ma35d1_adc_clkdiv_ops;
>> + init.flags |= flags;
>> + pdata.hw = parent_hw;
>> + init.parent_data = &pdata;
>> + init.num_parents = 1;
>> +
>> + div->reg = reg;
>> + div->shift = shift;
>> + div->width = width;
>> + div->mask = mask_bit ? BIT(mask_bit) : 0;
>> + div->lock = lock;
>> + div->hw.init = &init;
>> + div->table = table;
>> +
>> + hw = &div->hw;
>> + ret = devm_clk_hw_register(dev, hw);
>> + if (ret)
>> + return ERR_PTR(ret);
>> + return hw;
>> +}
>> +EXPORT_SYMBOL_GPL(ma35d1_reg_adc_clkdiv);
>> diff --git a/drivers/clk/nuvoton/clk-ma35d1-pll.c b/drivers/clk/nuvoton/clk-ma35d1-pll.c
>> new file mode 100644
>> index 000000000000..a9981db0a54a
>> --- /dev/null
>> +++ b/drivers/clk/nuvoton/clk-ma35d1-pll.c
>> @@ -0,0 +1,365 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Copyright (C) 2023 Nuvoton Technology Corp.
>> + * Author: Chi-Fang Li<[email protected]>
>> + */
>> +
>> +#include <linux/bitfield.h>
>> +#include <linux/clk-provider.h>
>> +#include <linux/container_of.h>
>> +#include <linux/device.h>
>> +#include <linux/io.h>
>> +#include <linux/kernel.h>
>> +#include <linux/math64.h>
>> +#include <linux/slab.h>
>> +#include <linux/units.h>
>> +#include <dt-bindings/clock/nuvoton,ma35d1-clk.h>
>> +
>> +/* PLL frequency limits */
>> +#define PLL_FREF_MAX_FREQ (200 * HZ_PER_MHZ)
>> +#define PLL_FREF_MIN_FREQ (1 * HZ_PER_MHZ)
>> +#define PLL_FREF_M_MAX_FREQ (40 * HZ_PER_MHZ)
>> +#define PLL_FREF_M_MIN_FREQ (10 * HZ_PER_MHZ)
>> +#define PLL_FCLK_MAX_FREQ (2400 * HZ_PER_MHZ)
>> +#define PLL_FCLK_MIN_FREQ (600 * HZ_PER_MHZ)
>> +#define PLL_FCLKO_MAX_FREQ (2400 * HZ_PER_MHZ)
>> +#define PLL_FCLKO_MIN_FREQ (85700 * HZ_PER_KHZ)
>> +#define PLL_SS_RATE 0x77
>> +#define PLL_SLOPE 0x58CFA
>> +
>> +#define REG_PLL_CTL0_OFFSET 0x0
>> +#define REG_PLL_CTL1_OFFSET 0x4
>> +#define REG_PLL_CTL2_OFFSET 0x8
>> +
>> +/* bit fields for REG_CLK_PLL0CTL0, which is SMIC PLL design */
>> +#define SPLL0_CTL0_FBDIV GENMASK(7, 0)
>> +#define SPLL0_CTL0_INDIV GENMASK(11, 8)
>> +#define SPLL0_CTL0_OUTDIV GENMASK(13, 12)
>> +#define SPLL0_CTL0_PD BIT(16)
>> +#define SPLL0_CTL0_BP BIT(17)
>> +
>> +/* bit fields for REG_CLK_PLLxCTL0 ~ REG_CLK_PLLxCTL2, where x = 2 ~ 5 */
>> +#define PLL_CTL0_FBDIV GENMASK(10, 0)
>> +#define PLL_CTL0_INDIV GENMASK(17, 12)
>> +#define PLL_CTL0_MODE GENMASK(19, 18)
>> +#define PLL_CTL0_SSRATE GENMASK(30, 20)
>> +#define PLL_CTL1_PD BIT(0)
>> +#define PLL_CTL1_BP BIT(1)
>> +#define PLL_CTL1_OUTDIV GENMASK(6, 4)
>> +#define PLL_CTL1_FRAC GENMASK(31, 24)
>> +#define PLL_CTL2_SLOPE GENMASK(23, 0)
>> +
>> +#define INDIV_MIN 1
>> +#define INDIV_MAX 63
>> +#define FBDIV_MIN 16
>> +#define FBDIV_MAX 2047
>> +#define FBDIV_FRAC_MIN 1600
>> +#define FBDIV_FRAC_MAX 204700
>> +#define OUTDIV_MIN 1
>> +#define OUTDIV_MAX 7
>> +
>> +#define PLL_MODE_INT 0
>> +#define PLL_MODE_FRAC 1
>> +#define PLL_MODE_SS 2
>> +
>> +struct ma35d1_clk_pll {
>> + struct clk_hw hw;
>> + u32 id;
>> + u8 mode;
>> + void __iomem *ctl0_base;
>> + void __iomem *ctl1_base;
>> + void __iomem *ctl2_base;
>> +};
>> +
>> +struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
>> + struct clk_hw *parent_hw, void __iomem *base);
>> +
>> +static inline struct ma35d1_clk_pll *to_ma35d1_clk_pll(struct clk_hw *_hw)
>> +{
>> + return container_of(_hw, struct ma35d1_clk_pll, hw);
>> +}
>> +
>> +static unsigned long ma35d1_calc_smic_pll_freq(u32 pll0_ctl0,
>> + unsigned long parent_rate)
>> +{
>> + const u32 clk_div_table[] = { 1, 2, 4, 8 };
> This is just 1 << n so the table doesn't seem necessary.
>
>> + u32 m, n, p, outdiv;
>> + u64 pll_freq;
>> +
>> + if (pll0_ctl0 & SPLL0_CTL0_BP)
>> + return parent_rate;
>> +
>> + n = FIELD_GET(SPLL0_CTL0_FBDIV, pll0_ctl0);
>> + m = FIELD_GET(SPLL0_CTL0_INDIV, pll0_ctl0);
>> + p = FIELD_GET(SPLL0_CTL0_OUTDIV, pll0_ctl0);
>> + outdiv = clk_div_table[p];
>> + pll_freq = (u64)parent_rate * n;
>> + div_u64(pll_freq, m * outdiv);
>> + return pll_freq;
>> +}
>> +
>> +static unsigned long ma35d1_calc_pll_freq(u8 mode, u32 *reg_ctl, unsigned long parent_rate)
>> +{
>> + unsigned long pll_freq, x;
>> + u32 m, n, p;
>> +
>> + if (reg_ctl[1] & PLL_CTL1_BP)
>> + return parent_rate;
>> +
>> + n = FIELD_GET(PLL_CTL0_FBDIV, reg_ctl[0]);
>> + m = FIELD_GET(PLL_CTL0_INDIV, reg_ctl[0]);
>> + p = FIELD_GET(PLL_CTL1_OUTDIV, reg_ctl[1]);
>> +
>> + if (mode == PLL_MODE_INT) {
>> + pll_freq = (u64)parent_rate * n;
>> + div_u64(pll_freq, m * p);
>> + } else {
>> + x = FIELD_GET(PLL_CTL1_FRAC, reg_ctl[1]);
>> + /* 2 decimal places floating to integer (ex. 1.23 to 123) */
>> + n = n * 100 + ((x * 100) / FIELD_MAX(PLL_CTL1_FRAC));
>> +
>> + /* pll_freq = parent_rate * n / 100 / m / p */
> Repeats what the code does, drop.

I will remove it.

>> + pll_freq = div_u64(parent_rate * n, 100 * m * p);
>> + }
>> + return pll_freq;
>> +}
>> +
>> +static int ma35d1_pll_find_closest(struct ma35d1_clk_pll *pll, unsigned long rate,
>> + unsigned long parent_rate, u32 *reg_ctl,
>> + unsigned long *freq)
>> +{
>> + unsigned long min_diff = ULONG_MAX;
>> + int fbdiv_min, fbdiv_max;
>> + int p, m, n;
>> +
>> + *freq = 0;
>> + if (rate < PLL_FCLKO_MIN_FREQ || rate > PLL_FCLKO_MAX_FREQ)
>> + return -EINVAL;
>> +
>> + if (pll->mode == PLL_MODE_INT) {
>> + fbdiv_min = FBDIV_MIN;
>> + fbdiv_max = FBDIV_MAX;
>> + } else {
>> + fbdiv_min = FBDIV_FRAC_MIN;
>> + fbdiv_max = FBDIV_FRAC_MAX;
>> + }
>> +
>> + for (m = INDIV_MIN; m <= INDIV_MAX; m++) {
>> + for (n = fbdiv_min; n <= fbdiv_max; n++) {
>> + for (p = OUTDIV_MIN; p <= OUTDIV_MAX; p++) {
>> + unsigned long tmp, fout, fclk, diff;
>> +
>> + tmp = div_u64(parent_rate, m);
>> + if (tmp < PLL_FREF_M_MIN_FREQ ||
>> + tmp > PLL_FREF_M_MAX_FREQ)
>> + continue; /* constrain */
>> +
>> + fclk = div_u64(parent_rate * n, m);
>> + /* for 2 decimal places */
>> + if (pll->mode != PLL_MODE_INT)
>> + fclk = div_u64(fclk, 100);
>> +
>> + if (fclk < PLL_FCLK_MIN_FREQ ||
>> + fclk > PLL_FCLK_MAX_FREQ)
>> + continue; /* constrain */
>> +
>> + fout = div_u64(fclk, p);
>> + if (fout < PLL_FCLKO_MIN_FREQ ||
>> + fout > PLL_FCLKO_MAX_FREQ)
>> + continue; /* constrain */
>> +
>> + diff = abs(rate - fout);
>> + if (diff < min_diff) {
>> + reg_ctl[0] = FIELD_PREP(PLL_CTL0_INDIV, m) |
>> + FIELD_PREP(PLL_CTL0_FBDIV, n);
>> + reg_ctl[1] = FIELD_PREP(PLL_CTL1_OUTDIV, p);
>> + *freq = fout;
>> + min_diff = diff;
>> + if (min_diff == 0)
>> + break;
>> + }
>> + }
>> + }
>> + }
>> + if (*freq == 0)
>> + return -EINVAL; /* cannot find even one valid setting */
>> + return 0;
>> +}
>> +
>> +static int ma35d1_clk_pll_set_rate(struct clk_hw *hw, unsigned long rate,
>> + unsigned long parent_rate)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 reg_ctl[3] = { 0 };
>> + unsigned long pll_freq;
>> + int ret;
>> +
>> + if (parent_rate < PLL_FREF_MIN_FREQ ||
>> + parent_rate > PLL_FREF_MAX_FREQ)
> One line.

I will fix it.

>> + return -EINVAL;
>> +
>> + ret = ma35d1_pll_find_closest(pll, rate, parent_rate, reg_ctl, &pll_freq);
>> + if (ret != 0)
>> + return ret;
>> +
>> + switch (pll->mode) {
>> + case PLL_MODE_INT:
>> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_INT);
>> + break;
>> + case PLL_MODE_FRAC:
>> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_FRAC);
>> + break;
>> + case PLL_MODE_SS:
>> + reg_ctl[0] |= FIELD_PREP(PLL_CTL0_MODE, PLL_MODE_SS) |
>> + FIELD_PREP(PLL_CTL0_SSRATE, PLL_SS_RATE);
>> + reg_ctl[2] = FIELD_PREP(PLL_CTL2_SLOPE, PLL_SLOPE);
>> + break;
>> + }
>> + reg_ctl[1] |= PLL_CTL1_PD;
>> +
>> + writel_relaxed(reg_ctl[0], pll->ctl0_base);
>> + writel_relaxed(reg_ctl[1], pll->ctl1_base);
>> + writel_relaxed(reg_ctl[2], pll->ctl2_base);
>> + return 0;
>> +}
>> +
>> +static unsigned long ma35d1_clk_pll_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 reg_ctl[3];
>> + unsigned long pll_freq;
>> +
>> + if (parent_rate < PLL_FREF_MIN_FREQ || parent_rate > PLL_FREF_MAX_FREQ)
>> + return 0;
>> +
>> + switch (pll->id) {
>> + case CAPLL:
>> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
>> + pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], parent_rate);
>> + return pll_freq;
>> + case DDRPLL:
>> + case APLL:
>> + case EPLL:
>> + case VPLL:
>> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
>> + reg_ctl[1] = readl_relaxed(pll->ctl1_base);
>> + pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, parent_rate);
>> + return pll_freq;
>> + }
>> + return 0;
>> +}
>> +
>> +static long ma35d1_clk_pll_round_rate(struct clk_hw *hw, unsigned long rate,
>> + unsigned long *parent_rate)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 reg_ctl[3] = { 0 };
>> + unsigned long pll_freq;
>> + long ret;
>> +
>> + if (*parent_rate < PLL_FREF_MIN_FREQ || *parent_rate > PLL_FREF_MAX_FREQ)
>> + return -EINVAL;
>> +
>> + ret = ma35d1_pll_find_closest(pll, rate, *parent_rate, reg_ctl, &pll_freq);
>> + if (ret != 0)
> < 0

I will fix it.

>> + return ret;
>> +
>> + switch (pll->id) {
>> + case CAPLL:
>> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
>> + pll_freq = ma35d1_calc_smic_pll_freq(reg_ctl[0], *parent_rate);
>> + return pll_freq;
>> + case DDRPLL:
>> + case APLL:
>> + case EPLL:
>> + case VPLL:
>> + reg_ctl[0] = readl_relaxed(pll->ctl0_base);
>> + reg_ctl[1] = readl_relaxed(pll->ctl1_base);
>> + pll_freq = ma35d1_calc_pll_freq(pll->mode, reg_ctl, *parent_rate);
>> + return pll_freq;
>> + }
>> + return 0;
>> +}
>> +
>> +static int ma35d1_clk_pll_is_prepared(struct clk_hw *hw)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 val = readl_relaxed(pll->ctl1_base);
>> +
>> + return !(val & PLL_CTL1_PD);
>> +}
>> +
>> +static int ma35d1_clk_pll_prepare(struct clk_hw *hw)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 val;
>> +
>> + val = readl_relaxed(pll->ctl1_base);
>> + val &= ~PLL_CTL1_PD;
>> + writel_relaxed(val, pll->ctl1_base);
>> + return 0;
>> +}
>> +
>> +static void ma35d1_clk_pll_unprepare(struct clk_hw *hw)
>> +{
>> + struct ma35d1_clk_pll *pll = to_ma35d1_clk_pll(hw);
>> + u32 val;
>> +
>> + val = readl_relaxed(pll->ctl1_base);
>> + val |= PLL_CTL1_PD;
>> + writel_relaxed(val, pll->ctl1_base);
>> +}
>> +
>> +static const struct clk_ops ma35d1_clk_pll_ops = {
>> + .is_prepared = ma35d1_clk_pll_is_prepared,
>> + .prepare = ma35d1_clk_pll_prepare,
>> + .unprepare = ma35d1_clk_pll_unprepare,
>> + .set_rate = ma35d1_clk_pll_set_rate,
>> + .recalc_rate = ma35d1_clk_pll_recalc_rate,
>> + .round_rate = ma35d1_clk_pll_round_rate,
>> +};
>> +
>> +static const struct clk_ops ma35d1_clk_fixed_pll_ops = {
>> + .recalc_rate = ma35d1_clk_pll_recalc_rate,
>> + .round_rate = ma35d1_clk_pll_round_rate,
>> +};
>> +
>> +struct clk_hw *ma35d1_reg_clk_pll(struct device *dev, u32 id, u8 u8mode, const char *name,
>> + struct clk_hw *parent_hw, void __iomem *base)
>> +{
>> + struct clk_parent_data pdata = { .index = 0 };
>> + struct clk_init_data init = {};
>> + struct ma35d1_clk_pll *pll;
>> + struct clk_hw *hw;
>> + int ret;
>> +
>> + pll = devm_kzalloc(dev, sizeof(*pll), GFP_KERNEL);
>> + if (!pll)
>> + return ERR_PTR(-ENOMEM);
>> +
>> + pll->id = id;
>> + pll->mode = u8mode;
>> + pll->ctl0_base = base + REG_PLL_CTL0_OFFSET;
>> + pll->ctl1_base = base + REG_PLL_CTL1_OFFSET;
>> + pll->ctl2_base = base + REG_PLL_CTL2_OFFSET;
>> +
>> + init.name = name;
>> + init.flags = 0;
>> + pdata.hw = parent_hw;
>> + init.parent_data = &pdata;
>> + init.num_parents = 1;
>> +
>> + if (id == CAPLL || id == DDRPLL)
>> + init.ops = &ma35d1_clk_fixed_pll_ops;
>> + else
>> + init.ops = &ma35d1_clk_pll_ops;
>> +
>> + pll->hw.init = &init;
>> + hw = &pll->hw;
>> +
>> + ret = devm_clk_hw_register(dev, hw);
>> + if (ret)
>> + return ERR_PTR(ret);
>> + return hw;
>> +}
>> +EXPORT_SYMBOL_GPL(ma35d1_reg_clk_pll);
>> diff --git a/drivers/clk/nuvoton/clk-ma35d1.c b/drivers/clk/nuvoton/clk-ma35d1.c
>> new file mode 100644
>> index 000000000000..68fbaf2f4945
>> --- /dev/null
>> +++ b/drivers/clk/nuvoton/clk-ma35d1.c
>> @@ -0,0 +1,948 @@
>> +static inline struct clk_hw *ma35d1_clk_fixed(const char *name, int rate)
>> +{
>> + return clk_hw_register_fixed_rate(NULL, name, NULL, 0, rate);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_mux_parent(struct device *dev,
>> + const char *name,
>> + void __iomem *reg,
>> + u8 shift, u8 width,
>> + const struct clk_parent_data *pdata,
>> + int num_pdata)
>> +{
>> + return clk_hw_register_mux_parent_data(dev, name, pdata, num_pdata,
>> + CLK_SET_RATE_NO_REPARENT, reg, shift,
>> + width, 0, &ma35d1_lock);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_mux(struct device *dev,
>> + const char *name,
>> + void __iomem *reg,
>> + u8 shift, u8 width,
>> + const char *const *parents,
>> + int num_parents)
>> +{
>> + return devm_clk_hw_register_mux(dev, name, parents, num_parents,
>> + CLK_SET_RATE_NO_REPARENT, reg, shift,
>> + width, 0, &ma35d1_lock);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_divider(struct device *dev,
>> + const char *name,
>> + const char *parent,
>> + void __iomem *reg, u8 shift,
>> + u8 width)
>> +{
>> + return devm_clk_hw_register_divider(dev, name, parent, CLK_SET_RATE_PARENT,
>> + reg, shift, width, 0, &ma35d1_lock);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_divider_pow2(struct device *dev,
>> + const char *name,
>> + const char *parent,
>> + void __iomem *reg,
>> + u8 shift, u8 width)
>> +{
>> + return devm_clk_hw_register_divider(dev, name, parent,
>> + CLK_DIVIDER_POWER_OF_TWO, reg, shift,
>> + width, 0, &ma35d1_lock);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_divider_table(struct device *dev,
>> + const char *name,
>> + const char *parent,
>> + void __iomem *reg,
>> + u8 shift, u8 width,
>> + const struct clk_div_table *table)
>> +{
>> + return devm_clk_hw_register_divider_table(dev, name, parent, 0,
>> + reg, shift, width, 0,
>> + table, &ma35d1_lock);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_fixed_factor(struct device *dev,
>> + const char *name,
>> + const char *parent,
>> + unsigned int mult,
>> + unsigned int div)
>> +{
>> + return devm_clk_hw_register_fixed_factor(dev, name, parent,
>> + CLK_SET_RATE_PARENT, mult, div);
>> +}
>> +
>> +static inline struct clk_hw *ma35d1_clk_gate(struct device *dev,
>> + const char *name,
>> + const char *parent,
>> + void __iomem *reg, u8 shift)
>> +{
>> + return devm_clk_hw_register_gate(dev, name, parent, CLK_SET_RATE_PARENT,
>> + reg, shift, 0, &ma35d1_lock);
>> +}
> Inline is not something that should be used that much in .c files, just
> leave it up to the compiler to decide whether to inline or not. There were
> some other inlines in the other file I noted later but I didn't mark them
> but please check their inline usage too.

Okay, I will check these .c files and remove the inline usage.

>> +static int ma35d1_get_pll_setting(struct device_node *clk_node, u32 *pllmode)
>> +{
>> + const char *of_str;
>> + int i;
>> +
>> + for (i = 0; i < PLL_MAX_NUM; i++) {
>> + if (of_property_read_string_index(clk_node, "nuvoton,pll-mode", i, &of_str))
>> + return -EINVAL;
>> + if (!strcmp(of_str, "integer"))
>> + pllmode[i] = PLL_MODE_INT;
>> + else if (!strcmp(of_str, "fractional"))
>> + pllmode[i] = PLL_MODE_FRAC;
>> + else if (!strcmp(of_str, "spread-spectrum"))
>> + pllmode[i] = PLL_MODE_SS;
>> + else
>> + return -EINVAL;
>> + }
>> + return 0;
>> +}
>> +
>> +static int ma35d1_clocks_probe(struct platform_device *pdev)
>> +{
>> + struct device *dev = &pdev->dev;
>> + struct device_node *clk_node = pdev->dev.of_node;
>> + struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>> + void __iomem *clk_base;
>> + static struct clk_hw **hws;
>> + static struct clk_hw_onecell_data *ma35d1_hw_data;
>> + u32 pllmode[PLL_MAX_NUM];
>> + int ret;
>> +
>> + ma35d1_hw_data = devm_kzalloc(dev,
>> + struct_size(ma35d1_hw_data, hws, CLK_MAX_IDX),
>> + GFP_KERNEL);
>> + if (WARN_ON(!ma35d1_hw_data))
> Alloc error should not be WARN_ON()'ed, it's not a bug. If you want to
> notify about normal (non-programming) errors, use dev_err() instead.

Yes, I will use dev_err() instead.

>> + return -ENOMEM;
>> +
>> + ma35d1_hw_data->num = CLK_MAX_IDX;
>> + hws = ma35d1_hw_data->hws;
>> +
>> + clk_base = devm_ioremap_resource(dev, res);
>> + if (IS_ERR(clk_base))
>> + return PTR_ERR(clk_base);
>> +
>> + ret = ma35d1_get_pll_setting(clk_node, pllmode);
>> + if (ret < 0) {
>> + dev_err(dev, "Invalid PLL setting!\n");
>> + return -EINVAL;
>> + }


Best Regards,
Jacky Huang

2023-05-09 01:27:47

by Jacky Huang

Subject: Re: [PATCH v10 09/10] reset: Add Nuvoton ma35d1 reset driver support

On 2023/5/8 下午 07:00, Ilpo Järvinen wrote:
> On Mon, 8 May 2023, Jacky Huang wrote:
>
>> From: Jacky Huang <[email protected]>
>>
>> This driver supports individual IP reset for ma35d1. The reset
>> control registers is a subset of system control registers.
> registers are
>
>> Signed-off-by: Jacky Huang <[email protected]>
>> ---
>> diff --git a/drivers/reset/reset-ma35d1.c b/drivers/reset/reset-ma35d1.c
>> new file mode 100644
>> index 000000000000..19ed323981df
>> --- /dev/null
>> +++ b/drivers/reset/reset-ma35d1.c
>> @@ -0,0 +1,234 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Copyright (C) 2023 Nuvoton Technology Corp.
>> + * Author: Chi-Fang Li <[email protected]>
>> + */
>> +
>> +#include <linux/bits.h>
>> +#include <linux/container_of.h>
>> +#include <linux/device.h>
>> +#include <linux/err.h>
>> +#include <linux/io.h>
>> +#include <linux/kernel.h>
>> +#include <linux/of.h>
>> +#include <linux/platform_device.h>
>> +#include <linux/reboot.h>
>> +#include <linux/reset-controller.h>
>> +#include <linux/spinlock.h>
>> +#include <dt-bindings/reset/nuvoton,ma35d1-reset.h>
>> +
>> +struct ma35d1_reset_data {
>> + struct reset_controller_dev rcdev;
>> + struct notifier_block restart_handler;
>> + void __iomem *base;
>> + spinlock_t lock;
> Please add a comment about what this protects. After adding that, feel
> free to add also:
>
> Reviewed-by: Ilpo Järvinen <[email protected]>
>
>
Dear Ilpo ,

Thanks for your review. I will fix them in the next version.


Best Regards,
Jacky Huang

2023-05-09 10:27:48

by Ilpo Järvinen

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

On Mon, 8 May 2023, Jacky Huang wrote:

> From: Jacky Huang <[email protected]>
>
> This adds UART and console driver for Nuvoton ma35d1 Soc.
> It supports full-duplex communication, FIFO control, and
> hardware flow control.
>
> Signed-off-by: Jacky Huang <[email protected]>
> ---
> drivers/tty/serial/Kconfig | 18 +
> drivers/tty/serial/Makefile | 1 +
> drivers/tty/serial/ma35d1_serial.c | 796 +++++++++++++++++++++++++++++
> 3 files changed, 815 insertions(+)
> create mode 100644 drivers/tty/serial/ma35d1_serial.c
>
> diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig
> index 398e5aac2e77..85ac6fc1ff1d 100644
> --- a/drivers/tty/serial/Kconfig
> +++ b/drivers/tty/serial/Kconfig
> @@ -1555,6 +1555,24 @@ config SERIAL_SUNPLUS_CONSOLE
> you can alter that using a kernel command line option such as
> "console=ttySUPx".
>
> +config SERIAL_NUVOTON_MA35D1
> + tristate "Nuvoton MA35D1 family UART support"
> + depends on ARCH_MA35 || COMPILE_TEST
> + select SERIAL_CORE
> + help
> + This driver supports Nuvoton MA35D1 family UART ports. If you would
> + like to use them, you must answer Y or M to this option. Note that
> + for use as console, it must be included in kernel and not as a
> + module
> +
> +config SERIAL_NUVOTON_MA35D1_CONSOLE
> + bool "Console on a Nuvotn MA35D1 family UART port"
> + depends on SERIAL_NUVOTON_MA35D1=y
> + select SERIAL_CORE_CONSOLE
> + help
> + Select this options if you'd like to use the UART port0 of the
> + Nuvoton MA35D1 family as a console.
> +
> endmenu
>
> config SERIAL_MCTRL_GPIO
> diff --git a/drivers/tty/serial/Makefile b/drivers/tty/serial/Makefile
> index cd9afd9e3018..0e823851c42c 100644
> --- a/drivers/tty/serial/Makefile
> +++ b/drivers/tty/serial/Makefile
> @@ -93,3 +93,4 @@ obj-$(CONFIG_SERIAL_MCTRL_GPIO) += serial_mctrl_gpio.o
>
> obj-$(CONFIG_SERIAL_KGDB_NMI) += kgdb_nmi.o
> obj-$(CONFIG_KGDB_SERIAL_CONSOLE) += kgdboc.o
> +obj-$(CONFIG_SERIAL_NUVOTON_MA35D1) += ma35d1_serial.o
> diff --git a/drivers/tty/serial/ma35d1_serial.c b/drivers/tty/serial/ma35d1_serial.c
> new file mode 100644
> index 000000000000..4eca34ba01c9
> --- /dev/null
> +++ b/drivers/tty/serial/ma35d1_serial.c
> @@ -0,0 +1,796 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * MA35D1 serial driver
> + * Copyright (C) 2023 Nuvoton Technology Corp.
> + */
> +
> +#include <linux/bitfield.h>
> +#include <linux/clk.h>
> +#include <linux/delay.h>
> +#include <linux/of.h>
> +#include <linux/of_platform.h>
> +#include <linux/serial_core.h>
> +#include <linux/slab.h>
> +#include <linux/tty_flip.h>
> +
> +#define UART_NR 17
> +
> +#define UART_REG_RBR 0x00
> +#define UART_REG_THR 0x00
> +#define UART_REG_IER 0x04
> +#define UART_REG_FCR 0x08
> +#define UART_REG_LCR 0x0C
> +#define UART_REG_MCR 0x10

These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
directly.

Setup regshift too and use it in serial_in.

> +#define UART_REG_MSR 0x14
> +#define UART_REG_FSR 0x18
> +#define UART_REG_ISR 0x1C
> +#define UART_REG_TOR 0x20
> +#define UART_REG_BAUD 0x24
> +#define UART_REG_ALTCTL 0x2C
> +#define UART_FUN_SEL 0x30
> +#define UART_REG_WKCTL 0x40
> +#define UART_REG_WKSTS 0x44

It would be better to prefix HW specific defines with something HW related
such as MA35D1. This applies to most of the below ones too:

> +/* UART_REG_IER - Interrupt Enable Register */
> +#define IER_RDA_IEN BIT(0) /* RBR Available Interrupt Enable */
> +#define IER_THRE_IEN BIT(1) /* THR Empty Interrupt Enable */
> +#define IER_RLS_IEN BIT(2) /* RX Line Status Interrupt Enable */

These look same as UART_IER bits, use the std ones.

> +#define IER_RTO_IEN BIT(4) /* RX Time-out Interrupt Enable */
> +#define IER_BUFERR_IEN BIT(5) /* Buffer Error Interrupt Enable */
> +#define IER_TIME_OUT_EN BIT(11) /* RX Buffer Time-out Counter Enable */
> +#define IER_AUTO_RTS BIT(12) /* nRTS Auto-flow Control Enable */
> +#define IER_AUTO_CTS BIT(13) /* nCTS Auto-flow Control Enable */
> +
> +/* UART_REG_FCR - FIFO Control Register */
> +#define FCR_RFR BIT(1) /* RX Field Software Reset */
> +#define FCR_TFR BIT(2) /* TX Field Software Reset */

Are these same as UART_FCR_CLEAR_* functionality wise? If they're use std
ones.

> +#define FCR_RFITL_MASK GENMASK(7, 4) /* RX FIFO Interrupt Trigger Level */
> +#define FCR_RFITL_1BYTE FIELD_PREP(FCR_RFITL_MASK, 0)
> +#define FCR_RFITL_4BYTES FIELD_PREP(FCR_RFITL_MASK, 1)
> +#define FCR_RFITL_8BYTES FIELD_PREP(FCR_RFITL_MASK, 2)
> +#define FCR_RFITL_14BYTES FIELD_PREP(FCR_RFITL_MASK, 3)
> +#define FCR_RFITL_30BYTES FIELD_PREP(FCR_RFITL_MASK, 4)
> +#define FCR_RTSTRGLV_MASK GENMASK(19, 16) /* nRTS Trigger Level */
> +#define FCR_RTSTRGLV_1BYTE FIELD_PREP(FCR_RTSTRGLV_MASK, 0)
> +#define FCR_RTSTRGLV_4BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 1)
> +#define FCR_RTSTRGLV_8BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 2)
> +#define FCR_RTSTRGLV_14BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 3)
> +#define FCR_RTSTRGLVL_30BYTES FIELD_PREP(FCR_RTSTRGLV_MASK, 4)
> +
> +/* UART_REG_LCR - Line Control Register */
> +#define LCR_NSB BIT(2) /* Number of “STOP Bit” */
> +#define LCR_PBE BIT(3) /* Parity Bit Enable */
> +#define LCR_EPE BIT(4) /* Even Parity Enable */
> +#define LCR_SPE BIT(5) /* Stick Parity Enable */
> +#define LCR_BREAK BIT(6) /* Break Control */
> +#define LCR_WLS_MASK GENMASK(1, 0) /* Word Length Selection */
> +#define LCR_WLS_5BITS FIELD_PREP(LCR_WLS_MASK, 0)
> +#define LCR_WLS_6BITS FIELD_PREP(LCR_WLS_MASK, 1)
> +#define LCR_WLS_7BITS FIELD_PREP(LCR_WLS_MASK, 2)
> +#define LCR_WLS_8BITS FIELD_PREP(LCR_WLS_MASK, 3)

These look exact copies of UART_LCR_* bits.

> +/* UART_REG_MCR - Modem Control Register */
> +#define MCR_RTS_CTRL BIT(1) /* nRTS Signal Control */

Is this same as UART_MCR_RTS?

> +#define MCR_RTSACTLV BIT(9) /* nRTS Pin Active Level */
> +#define MCR_RTSSTS BIT(13) /* nRTS Pin Status (Read Only) */
> +
> +/* UART_REG_MSR - Modem Status Register */
> +#define MSR_CTSDETF BIT(0) /* Detect nCTS State Change Flag */
> +#define MSR_CTSSTS BIT(4) /* nCTS Pin Status (Read Only) */
> +#define MSR_CTSACTLV BIT(8) /* nCTS Pin Active Level */
> +
> +/* UART_REG_FSR - FIFO Status Register */
> +#define FSR_RX_OVER_IF BIT(0) /* RX Overflow Error Interrupt Flag */
> +#define FSR_PEF BIT(4) /* Parity Error Flag*/
> +#define FSR_FEF BIT(5) /* Framing Error Flag */
> +#define FSR_BIF BIT(6) /* Break Interrupt Flag */
> +#define FSR_RX_EMPTY BIT(14) /* Receiver FIFO Empty (Read Only) */
> +#define FSR_RX_FULL BIT(15) /* Receiver FIFO Full (Read Only) */
> +#define FSR_TX_EMPTY BIT(22) /* Transmitter FIFO Empty (Read Only) */
> +#define FSR_TX_FULL BIT(23) /* Transmitter FIFO Full (Read Only) */
> +#define FSR_TX_OVER_IF BIT(24) /* TX Overflow Error Interrupt Flag */
> +#define FSR_TE_FLAG BIT(28) /* Transmitter Empty Flag (Read Only) */
> +#define FSR_RXPTR_MSK GENMASK(13, 8) /* TX FIFO Pointer mask */
> +#define FSR_TXPTR_MSK GENMASK(21, 16) /* RX FIFO Pointer mask */
> +
> +/* UART_REG_ISR - Interrupt Status Register */
> +#define ISR_RDA_IF BIT(0) /* RBR Available Interrupt Flag */
> +#define ISR_THRE_IF BIT(1) /* THR Empty Interrupt Flag */
> +#define ISR_RLSIF BIT(2) /* Receive Line Interrupt Flag */
> +#define ISR_MODEMIF BIT(3) /* MODEM Interrupt Flag */
> +#define ISR_RXTO_IF BIT(4) /* RX Time-out Interrupt Flag */
> +#define ISR_BUFEIF BIT(5) /* Buffer Error Interrupt Flag */
> +#define UART_ISR_WK_IF BIT(6) /* UART Wake-up Interrupt Flag */
> +#define UART_ISR_RDAINT BIT(8) /* RBR Available Interrupt Indicator */
> +#define ISR_THRE_INT BIT(9) /* THR Empty Interrupt Indicator */
> +#define ISR_ALL 0xFFFFFFFF
> +
> +/* UART_REG_BAUD - Baud Rate Divider Register */
> +#define BAUD_MODE_MASK GENMASK(29, 28)
> +#define BAUD_MODE0 FIELD_PREP(BAUD_MODE_MASK, 0)
> +#define BAUD_MODE1 FIELD_PREP(BAUD_MODE_MASK, 2)
> +#define BAUD_MODE2 FIELD_PREP(BAUD_MODE_MASK, 3)
> +
> +/* UART_REG_ALTCTL - Alternate Control/Status Register */
> +#define ALTCTL_RS485AUD BIT(10) /* RS-485 Auto Direction Function */
> +
> +/* UART_FUN_SEL - Function Select Register */
> +#define FUN_SEL_MASK GENMASK(2, 0)
> +#define FUN_SEL_UART FIELD_PREP(FUN_SEL_MASK, 0)
> +#define FUN_SEL_RS485 FIELD_PREP(FUN_SEL_MASK, 3)
> +
> +/* UART FIFO depth */
> +#define UART_FIFO_DEPTH 32
> +/* UART console clock */
> +#define UART_CONSOLE_CLK 24000000

* HZ_PER_MHZ ?

> +/* UART register ioremap size */
> +#define UART_REG_SIZE 0x100
> +/* Rx Timeout */
> +#define UART_RX_TOUT 0x40
> +
> +#define UART_ISR_IF_CHECK (ISR_RDA_IF | ISR_RXTO_IF | ISR_THRE_INT | ISR_BUFEIF)
> +
> +#define LOOP_TIMEOUT 1000

Unused.

> +static struct uart_driver ma35d1serial_reg;
> +
> +struct uart_ma35d1_port {
> + struct uart_port port;
> + struct clk *clk;
> + u16 capabilities; /* port capabilities */
> + u8 ier;
> + u8 lcr;
> + u8 mcr;
> + u32 baud_rate;
> + u32 console_baud_rate;
> + u32 console_line;
> + u32 console_int;
> +};
> +
> +static struct uart_ma35d1_port ma35d1serial_ports[UART_NR];
> +
> +static struct uart_ma35d1_port *to_ma35d1_uart_port(struct uart_port *uart)
> +{
> + return container_of(uart, struct uart_ma35d1_port, port);
> +}
> +
> +static u32 serial_in(struct uart_ma35d1_port *p, u32 offset)
> +{
> + return readl_relaxed(p->port.membase + offset);
> +}
> +
> +static void serial_out(struct uart_ma35d1_port *p, u32 offset, u32 value)
> +{
> + writel_relaxed(value, p->port.membase + offset);
> +}
> +
> +static void __stop_tx(struct uart_ma35d1_port *p)
> +{
> + u32 ier;
> +
> + ier = serial_in(p, UART_REG_IER);
> + if (ier & IER_THRE_IEN)
> + serial_out(p, UART_REG_IER, ier & ~IER_THRE_IEN);
> +}
> +
> +static void ma35d1serial_stop_tx(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + __stop_tx(up);
> +}
> +
> +static void transmit_chars(struct uart_ma35d1_port *up)
> +{
> + u32 count;
> + u8 ch;
> +
> + if (uart_tx_stopped(&up->port)) {
> + ma35d1serial_stop_tx(&up->port);
> + return;
> + }
> + count = UART_FIFO_DEPTH - FIELD_GET(FSR_TXPTR_MSK, serial_in(up, UART_REG_FSR));
> + uart_port_tx_limited(&up->port, ch, count,
> + !(serial_in(up, UART_REG_FSR) & FSR_TX_FULL),
> + serial_out(up, UART_REG_THR, ch),
> + ({}));
> +}
> +
> +static void ma35d1serial_start_tx(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 ier;
> +
> + ier = serial_in(up, UART_REG_IER);
> + serial_out(up, UART_REG_IER, ier & ~IER_THRE_IEN);
> + transmit_chars(up);
> + serial_out(up, UART_REG_IER, ier | IER_THRE_IEN);
> +}
> +
> +static void ma35d1serial_stop_rx(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + serial_out(up, UART_REG_IER, serial_in(up, UART_REG_IER) & ~IER_RDA_IEN);
> +}
> +
> +static void receive_chars(struct uart_ma35d1_port *up)
> +{
> + u8 ch, flag;
> + u32 fsr;
> + int max_count = 256;
> +
> + fsr = serial_in(up, UART_REG_FSR);
> + do {
> + flag = TTY_NORMAL;
> + up->port.icount.rx++;
> +
> + if (unlikely(fsr & (FSR_BIF | FSR_FEF | FSR_PEF | FSR_RX_OVER_IF))) {
> + if (fsr & FSR_BIF) {
> + up->port.icount.brk++;
> + if (uart_handle_break(&up->port))
> + continue;
> + }
> + if (fsr & FSR_FEF)
> + up->port.icount.frame++;
> + if (fsr & FSR_PEF)
> + up->port.icount.parity++;
> + if (fsr & FSR_RX_OVER_IF)
> + up->port.icount.overrun++;
> +
> + serial_out(up, UART_REG_FSR, fsr &
> + (FSR_BIF | FSR_FEF | FSR_PEF | FSR_RX_OVER_IF));
> +
> + if (fsr & FSR_BIF)
> + flag = TTY_BREAK;
> + else if (fsr & FSR_PEF)
> + flag = TTY_PARITY;
> + else if (fsr & FSR_FEF)
> + flag = TTY_FRAME;
> + }
> +
> + ch = serial_in(up, UART_REG_RBR);
> + if (uart_handle_sysrq_char(&up->port, ch))
> + continue;
> +
> + spin_lock(&up->port.lock);
> + uart_insert_char(&up->port, fsr, FSR_RX_OVER_IF, ch, flag);
> + spin_unlock(&up->port.lock);
> +
> + fsr = serial_in(up, UART_REG_FSR);
> + } while (!(fsr & FSR_RX_EMPTY) && (max_count-- > 0));
> +
> + spin_lock(&up->port.lock);
> + tty_flip_buffer_push(&up->port.state->port);
> + spin_unlock(&up->port.lock);
> +}
> +
> +static irqreturn_t ma35d1serial_interrupt(int irq, void *dev_id)
> +{
> + struct uart_port *port = dev_id;
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 isr, fsr;
> +
> + isr = serial_in(up, UART_REG_ISR);
> + fsr = serial_in(up, UART_REG_FSR);
> +
> + if (!(isr & UART_ISR_IF_CHECK))
> + return IRQ_NONE;
> +
> + if (isr & (ISR_RDA_IF | ISR_RXTO_IF))
> + receive_chars(up);
> + if (isr & ISR_THRE_INT)
> + transmit_chars(up);
> + if (fsr & FSR_TX_OVER_IF)
> + serial_out(up, UART_REG_FSR, FSR_TX_OVER_IF);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static u32 ma35d1serial_tx_empty(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 fsr;
> +
> + fsr = serial_in(up, UART_REG_FSR);
> + return (fsr & (FSR_TE_FLAG | FSR_TX_EMPTY)) ==
> + (FSR_TE_FLAG | FSR_TX_EMPTY) ? TIOCSER_TEMT : 0;
> +}
> +
> +static u32 ma35d1serial_get_mctrl(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 status;
> + u32 ret = 0;
> +
> + status = serial_in(up, UART_REG_MSR);
> + if (!(status & MSR_CTSSTS))
> + ret |= TIOCM_CTS;
> + return ret;
> +}
> +
> +static void ma35d1serial_set_mctrl(struct uart_port *port, u32 mctrl)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 mcr = 0;
> + u32 ier = 0;
> +
> + if (mctrl & TIOCM_RTS) {
> + mcr = serial_in(up, UART_REG_MCR);
> + mcr |= MCR_RTSACTLV;
> + mcr &= ~MCR_RTS_CTRL;
> + }
> + if (up->mcr & UART_MCR_AFE) {
> + mcr = serial_in(up, UART_REG_MCR);
> + mcr |= MCR_RTSACTLV;
> + mcr &= ~MCR_RTS_CTRL;
> +
> + serial_out(up, UART_REG_IER,
> + (serial_in(up, UART_REG_IER) | IER_AUTO_RTS | IER_AUTO_CTS));

Split to 3 lines.

> +
> + up->port.flags |= UPF_HARD_FLOW;
> + } else {
> + ier = serial_in(up, UART_REG_IER);
> + ier &= ~(IER_AUTO_RTS | IER_AUTO_CTS);
> + serial_out(up, UART_REG_IER, ier);
> +
> + up->port.flags &= ~UPF_HARD_FLOW;
> + }
> + serial_out(up, UART_REG_MSR, (serial_in(up, UART_REG_MSR) | MSR_CTSACTLV));

Split this to 3 lines.

> + serial_out(up, UART_REG_MCR, mcr);

Is it okay to write 0 to MCR here (when neither of the branches that read
the previous value above are taken)?

> +}
> +
> +static void ma35d1serial_break_ctl(struct uart_port *port, int break_state)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + unsigned long flags;
> + u32 lcr;
> +
> + spin_lock_irqsave(&up->port.lock, flags);
> + lcr = serial_in(up, UART_REG_LCR);
> + if (break_state != 0)
> + lcr |= LCR_BREAK;
> + else
> + lcr &= ~LCR_BREAK;
> + serial_out(up, UART_REG_LCR, lcr);
> + spin_unlock_irqrestore(&up->port.lock, flags);
> +}
> +
> +static int ma35d1serial_startup(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + int retval;
> +
> + /* Reset FIFO */
> + serial_out(up, UART_REG_FCR, FCR_TFR | FCR_RFR);
> +
> + /* Clear pending interrupts */
> + serial_out(up, UART_REG_ISR, ISR_ALL);
> +
> + retval = request_irq(port->irq, ma35d1serial_interrupt, 0,
> + dev_name(port->dev), port);
> + if (retval) {
> + dev_err(up->port.dev, "request irq failed.\n");
> + return retval;
> + }
> +
> + serial_out(up, UART_REG_FCR, serial_in(up, UART_REG_FCR) |
> + FCR_RFITL_4BYTES | FCR_RTSTRGLV_8BYTES);
> + serial_out(up, UART_REG_LCR, LCR_WLS_8BITS);
> + serial_out(up, UART_REG_TOR, UART_RX_TOUT);
> + serial_out(up, UART_REG_IER, IER_RTO_IEN | IER_RDA_IEN |
> + IER_TIME_OUT_EN | IER_BUFERR_IEN);
> + return 0;
> +}
> +
> +static void ma35d1serial_shutdown(struct uart_port *port)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + serial_out(up, UART_REG_IER, 0);
> + free_irq(port->irq, port);
> +}
> +
> +static u32 ma35d1serial_get_divisor(struct uart_port *port, u32 baud)
> +{
> + return (port->uartclk / baud) - 2;

What is the magic 2?

> +}
> +
> +static void ma35d1serial_set_termios(struct uart_port *port,
> + struct ktermios *termios,
> + const struct ktermios *old)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> + u32 lcr = 0;
> + unsigned long flags;
> + u32 baud, quot;
> +
> + lcr = UART_LCR_WLEN(tty_get_char_size(termios->c_cflag));
> +
> + if (termios->c_cflag & CSTOPB)
> + lcr |= LCR_NSB;
> + if (termios->c_cflag & PARENB)
> + lcr |= LCR_PBE;
> + if (!(termios->c_cflag & PARODD))
> + lcr |= LCR_EPE;
> + if (termios->c_cflag & CMSPAR)
> + lcr |= LCR_SPE;
> +
> + baud = uart_get_baud_rate(port, termios, old, port->uartclk / 0xffff,

UART_DIV_MAX ?

> + port->uartclk / 11);
> +
> + quot = ma35d1serial_get_divisor(port, baud);
> +
> + /*
> + * Ok, we're now changing the port state. Do it with
> + * interrupts disabled.
> + */
> + spin_lock_irqsave(&up->port.lock, flags);
> +
> + up->port.read_status_mask = FSR_RX_OVER_IF;
> + if (termios->c_iflag & INPCK)
> + up->port.read_status_mask |= FSR_FEF | FSR_PEF;
> + if (termios->c_iflag & (BRKINT | PARMRK))
> + up->port.read_status_mask |= FSR_BIF;
> +
> + /* Characteres to ignore */
> + up->port.ignore_status_mask = 0;
> + if (termios->c_iflag & IGNPAR)
> + up->port.ignore_status_mask |= FSR_FEF | FSR_PEF;
> + if (termios->c_iflag & IGNBRK) {
> + up->port.ignore_status_mask |= FSR_BIF;
> + /*
> + * If we're ignoring parity and break indicators,
> + * ignore overruns too (for real raw support).
> + */
> + if (termios->c_iflag & IGNPAR)
> + up->port.ignore_status_mask |= FSR_RX_OVER_IF;
> + }
> + if (termios->c_cflag & CRTSCTS)
> + up->mcr |= UART_MCR_AFE;
> + else
> + up->mcr &= ~UART_MCR_AFE;
> +
> + uart_update_timeout(port, termios->c_cflag, baud);
> + ma35d1serial_set_mctrl(&up->port, up->port.mctrl);
> + serial_out(up, UART_REG_BAUD, quot | BAUD_MODE2);
> + serial_out(up, UART_REG_LCR, lcr);
> + spin_unlock_irqrestore(&up->port.lock, flags);
> +}
> +
> +static const char *ma35d1serial_type(struct uart_port *port)
> +{
> + return "ma35d1-uart";
> +}
> +
> +static void ma35d1serial_config_port(struct uart_port *port, int flags)
> +{
> + /*
> + * Driver core for serial ports forces a non-zero value for port type.
> + * Write an arbitrary value here to accommodate the serial core driver,
> + * as ID part of UAPI is redundant.
> + */
> + port->type = 1;
> +}
> +
> +static int ma35d1serial_verify_port(struct uart_port *port,
> + struct serial_struct *ser)
> +{
> + if (port->type != PORT_UNKNOWN && ser->type != 1)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static const struct uart_ops ma35d1serial_ops = {
> + .tx_empty = ma35d1serial_tx_empty,
> + .set_mctrl = ma35d1serial_set_mctrl,
> + .get_mctrl = ma35d1serial_get_mctrl,
> + .stop_tx = ma35d1serial_stop_tx,
> + .start_tx = ma35d1serial_start_tx,
> + .stop_rx = ma35d1serial_stop_rx,
> + .break_ctl = ma35d1serial_break_ctl,
> + .startup = ma35d1serial_startup,
> + .shutdown = ma35d1serial_shutdown,
> + .set_termios = ma35d1serial_set_termios,
> + .type = ma35d1serial_type,
> + .config_port = ma35d1serial_config_port,
> + .verify_port = ma35d1serial_verify_port,
> +};
> +
> +static const struct of_device_id ma35d1_serial_of_match[] = {
> + { .compatible = "nuvoton,ma35d1-uart" },
> + {},
> +};
> +MODULE_DEVICE_TABLE(of, ma35d1_serial_of_match);
> +
> +#ifdef CONFIG_SERIAL_NUVOTON_MA35D1_CONSOLE
> +
> +static struct device_node *ma35d1serial_uart_nodes[UART_NR];
> +
> +static void wait_for_xmitr(struct uart_ma35d1_port *up)
> +{
> + unsigned int tmout;
> +
> + /* Wait up to 10ms for the character(s) to be sent. */
> + tmout = 10000;
> + while (--tmout) {
> + if (serial_in(up, UART_REG_FSR) & FSR_TX_EMPTY)
> + break;
> + udelay(1);
> + }
> +}
> +
> +static void ma35d1serial_console_putchar(struct uart_port *port, unsigned char ch)
> +{
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + wait_for_xmitr(up);
> + serial_out(up, UART_REG_THR, ch);
> +}
> +
> +/*
> + * Print a string to the serial port trying not to disturb
> + * any possible real use of the port...
> + *
> + * The console_lock must be held when we get here.
> + */
> +static void ma35d1serial_console_write(struct console *co,
> + const char *s, u32 count)
> +{
> + struct uart_ma35d1_port *up = &ma35d1serial_ports[co->index];
> + unsigned long flags;
> + u32 ier;
> +
> + spin_lock_irqsave(&up->port.lock, flags);
> +
> + /*
> + * First save the IER then disable the interrupts
> + */
> + ier = serial_in(up, UART_REG_IER);
> + serial_out(up, UART_REG_IER, 0);
> +
> + uart_console_write(&up->port, s, count, ma35d1serial_console_putchar);
> +
> + wait_for_xmitr(up);
> + serial_out(up, UART_REG_IER, ier);
> +
> + spin_unlock_irqrestore(&up->port.lock, flags);
> +}
> +
> +static int __init ma35d1serial_console_setup(struct console *co,
> + char *options)
> +{
> + struct device_node *np = ma35d1serial_uart_nodes[co->index];
> + struct uart_ma35d1_port *p = &ma35d1serial_ports[co->index];
> + u32 val32[4];
> + struct uart_port *port;
> + int baud = 115200;
> + int bits = 8;
> + int parity = 'n';
> + int flow = 'n';
> +
> + /*
> + * Check whether an invalid uart number has been specified, and
> + * if so, search for the first available port that does have
> + * console support.
> + */
> + if ((co->index < 0) || (co->index >= UART_NR)) {
> + pr_debug("Console Port%x out of range\n", co->index);
> + return -EINVAL;
> + }
> +
> + if (of_property_read_u32_array(np, "reg", val32, 4) != 0)
> + return -EINVAL;
> + p->port.iobase = val32[1];
> + p->port.membase = ioremap(p->port.iobase, UART_REG_SIZE);
> + p->port.ops = &ma35d1serial_ops;
> + p->port.line = 0;
> + p->port.uartclk = UART_CONSOLE_CLK;
> +
> + port = &ma35d1serial_ports[co->index].port;
> +
> + if (options)
> + uart_parse_options(options, &baud, &parity, &bits, &flow);
> +
> + return uart_set_options(port, co, baud, parity, bits, flow);
> +}
> +
> +static struct console ma35d1serial_console = {
> + .name = "ttyS",
> + .write = ma35d1serial_console_write,
> + .device = uart_console_device,
> + .setup = ma35d1serial_console_setup,
> + .flags = CON_PRINTBUFFER | CON_ENABLED,
> + .index = -1,
> + .data = &ma35d1serial_reg,
> +};
> +
> +static void ma35d1serial_console_init_port(void)
> +{
> + u32 i = 0;
> + struct device_node *np;
> +
> + for_each_matching_node(np, ma35d1_serial_of_match) {
> + if (ma35d1serial_uart_nodes[i] == NULL) {
> + of_node_get(np);
> + ma35d1serial_uart_nodes[i] = np;
> + i++;
> + if (i == UART_NR)
> + break;
> + }
> + }
> +}
> +
> +static int __init ma35d1serial_console_init(void)
> +{
> + ma35d1serial_console_init_port();
> + register_console(&ma35d1serial_console);
> + return 0;
> +}
> +console_initcall(ma35d1serial_console_init);
> +
> +#define MA35D1SERIAL_CONSOLE (&ma35d1serial_console)
> +#else
> +#define MA35D1SERIAL_CONSOLE NULL
> +#endif
> +
> +static struct uart_driver ma35d1serial_reg = {
> + .owner = THIS_MODULE,
> + .driver_name = "serial",
> + .dev_name = "ttyS",
> + .major = TTY_MAJOR,
> + .minor = 64,
> + .cons = MA35D1SERIAL_CONSOLE,
> + .nr = UART_NR,
> +};

This doesn't seem necessary, 8250 core will have the uart_driver for you
and most of the console stuff too. You just need to setup a few things
correctly (see the setup functions in 8250_early for ideas/examples).

> +/*
> + * Register a set of serial devices attached to a platform device.
> + * The list is terminated with a zero flags entry, which means we expect
> + * all entries to have at least UPF_BOOT_AUTOCONF set.
> + */
> +static int ma35d1serial_probe(struct platform_device *pdev)
> +{
> + struct resource *res_mem;
> + struct uart_ma35d1_port *up;
> + int ret = 0;
> +
> + if (pdev->dev.of_node) {
> + ret = of_alias_get_id(pdev->dev.of_node, "serial");
> + if (ret < 0) {
> + dev_err(&pdev->dev, "failed to get alias/pdev id, errno %d\n", ret);
> + return ret;
> + }
> + }
> + up = &ma35d1serial_ports[ret];
> + up->port.line = ret;
> + res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!res_mem)
> + return -ENODEV;
> +
> + up->port.iobase = res_mem->start;
> + up->port.membase = ioremap(up->port.iobase, UART_REG_SIZE);
> + up->port.ops = &ma35d1serial_ops;
> +
> + spin_lock_init(&up->port.lock);
> +
> + up->clk = of_clk_get(pdev->dev.of_node, 0);
> + if (IS_ERR(up->clk)) {
> + ret = PTR_ERR(up->clk);
> + dev_err(&pdev->dev, "failed to get core clk: %d\n", ret);
> + goto err_iounmap;
> + }
> +
> + ret = clk_prepare_enable(up->clk);
> + if (ret)
> + goto err_iounmap;
> +
> + if (up->port.line != 0)
> + up->port.uartclk = clk_get_rate(up->clk);
> +
> + ret = platform_get_irq(pdev, 0);
> + if (ret < 0)
> + goto err_clk_disable;
> +
> + up->port.irq = ret;
> + up->port.dev = &pdev->dev;
> + up->port.flags = UPF_BOOT_AUTOCONF;
> +
> + platform_set_drvdata(pdev, up);
> +
> + ret = uart_add_one_port(&ma35d1serial_reg, &up->port);

For 8250, you should be using serial8250_register_8250_port(). See the
other drivers how to setup the console functions.

> + if (ret < 0)
> + goto err_free_irq;
> +
> + return 0;
> +
> +err_free_irq:
> + free_irq(up->port.irq, &up->port);
> +
> +err_clk_disable:
> + clk_disable_unprepare(up->clk);
> +
> +err_iounmap:
> + iounmap(up->port.membase);
> + return ret;
> +}
> +
> +/*
> + * Remove serial ports registered against a platform device.
> + */
> +static int ma35d1serial_remove(struct platform_device *dev)
> +{
> + struct uart_port *port = platform_get_drvdata(dev);
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + uart_remove_one_port(&ma35d1serial_reg, port);

serial8250_unregister_port()

> + clk_disable_unprepare(up->clk);
> + return 0;
> +}
> +
> +static int ma35d1serial_suspend(struct platform_device *dev, pm_message_t state)
> +{
> + struct uart_port *port = platform_get_drvdata(dev);
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + uart_suspend_port(&ma35d1serial_reg, &up->port);
> + if (up->port.line == 0) {
> + up->console_baud_rate = serial_in(up, UART_REG_BAUD);
> + up->console_line = serial_in(up, UART_REG_LCR);
> + up->console_int = serial_in(up, UART_REG_IER);
> + }
> + return 0;
> +}
> +
> +static int ma35d1serial_resume(struct platform_device *dev)
> +{
> + struct uart_port *port = platform_get_drvdata(dev);
> + struct uart_ma35d1_port *up = to_ma35d1_uart_port(port);
> +
> + if (up->port.line == 0) {
> + serial_out(up, UART_REG_BAUD, up->console_baud_rate);
> + serial_out(up, UART_REG_LCR, up->console_line);
> + serial_out(up, UART_REG_IER, up->console_int);
> + }
> + uart_resume_port(&ma35d1serial_reg, &up->port);
> + return 0;
> +}
> +
> +static struct platform_driver ma35d1serial_driver = {
> + .probe = ma35d1serial_probe,
> + .remove = ma35d1serial_remove,

> + .suspend = ma35d1serial_suspend,
> + .resume = ma35d1serial_resume,

Shouldn't these be under .driver.pm instead?

> + .driver = {
> + .name = "ma35d1-uart",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(ma35d1_serial_of_match),
> + },
> +};
> +
> +static int __init ma35d1serial_init(void)
> +{
> + int ret;
> +
> + ret = uart_register_driver(&ma35d1serial_reg);
> + if (ret)
> + return ret;
> + ret = platform_driver_register(&ma35d1serial_driver);
> + if (ret)
> + uart_unregister_driver(&ma35d1serial_reg);
> + return ret;
> +}
> +
> +static void __exit ma35d1serial_exit(void)
> +{
> + platform_driver_unregister(&ma35d1serial_driver);
> + uart_unregister_driver(&ma35d1serial_reg);
> +}
> +
> +module_init(ma35d1serial_init);
> +module_exit(ma35d1serial_exit);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("MA35D1 serial driver");
> +
>

--
i.

2023-05-09 12:34:17

by Ilpo Järvinen

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

On Tue, 9 May 2023, Arnd Bergmann wrote:

> On Tue, May 9, 2023, at 12:17, Ilpo J?rvinen wrote:
> > On Mon, 8 May 2023, Jacky Huang wrote:
> >> +
> >> +#define UART_NR 17
> >> +
> >> +#define UART_REG_RBR 0x00
> >> +#define UART_REG_THR 0x00
> >> +#define UART_REG_IER 0x04
> >> +#define UART_REG_FCR 0x08
> >> +#define UART_REG_LCR 0x0C
> >> +#define UART_REG_MCR 0x10
> >
> > These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
> > directly.
> >
> > Setup regshift too and use it in serial_in.
>
> I think this came up in previous reviews, but it turned out that
> only the first six registers are compatible, while the later
> ones are all different, and it's not 8250 compatible.

So use the normal name for compatible ones and HW specific names for the
others?

It might not be compatible in everything but surely 8250 influence is
visible here and there.

> It might be helpful to rename the registers to something
> with a prefix other than UART_REG_*, to avoid the confusion
> and possible namespace clash.

That is what I also suggested for the rest of the registers.

--
i.

> >> +/* UART_REG_IER - Interrupt Enable Register */
> >> +#define IER_RDA_IEN BIT(0) /* RBR Available Interrupt Enable */
> >> +#define IER_THRE_IEN BIT(1) /* THR Empty Interrupt Enable */
> >> +#define IER_RLS_IEN BIT(2) /* RX Line Status Interrupt Enable */
> >
> > These look same as UART_IER bits, use the std ones.
> ...
> > Are these same as UART_FCR_CLEAR_* functionality wise? If they're use std
> > ones.
>
> Again, I'd think we're better off having a distinct naming for
> them than trying to share the definitions with 8250.
>
> >> +static struct uart_driver ma35d1serial_reg = {
> >> + .owner = THIS_MODULE,
> >> + .driver_name = "serial",
> >> + .dev_name = "ttyS",
> >> + .major = TTY_MAJOR,
> >> + .minor = 64,
> >> + .cons = MA35D1SERIAL_CONSOLE,
> >> + .nr = UART_NR,
> >> +};
> >
> > This doesn't seem necessary, 8250 core will have the uart_driver for you
> > and most of the console stuff too. You just need to setup a few things
> > correctly (see the setup functions in 8250_early for ideas/examples).
> >...
> >> +
> >> + ret = uart_add_one_port(&ma35d1serial_reg, &up->port);
> >
> > For 8250, you should be using serial8250_register_8250_port(). See the
> > other drivers how to setup the console functions.
>
> Consequently, this should also be kept separate from the serial8250
> driver, I don't see a way to fit the nuvoton code into the existing
> driver without making the resulting driver worse for everyone.
>
> There is one thing that absolutely needs to be changed though:
> the driver_name/dev_name/major/minor fields all clash with the
> 8250 driver, so you cannot have a kernel that has both drivers
> built-in. All of these should change to get out of the way of the
> existing drivers.
>
> Arnd
>

2023-05-09 12:38:12

by Arnd Bergmann

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

On Tue, May 9, 2023, at 14:25, Ilpo Järvinen wrote:
> On Tue, 9 May 2023, Arnd Bergmann wrote:
>> On Tue, May 9, 2023, at 12:17, Ilpo Järvinen wrote:
>> > On Mon, 8 May 2023, Jacky Huang wrote:
>> >> +
>> >> +#define UART_NR 17
>> >> +
>> >> +#define UART_REG_RBR 0x00
>> >> +#define UART_REG_THR 0x00
>> >> +#define UART_REG_IER 0x04
>> >> +#define UART_REG_FCR 0x08
>> >> +#define UART_REG_LCR 0x0C
>> >> +#define UART_REG_MCR 0x10
>> >
>> > These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
>> > directly.
>> >
>> > Setup regshift too and use it in serial_in.
>>
>> I think this came up in previous reviews, but it turned out that
>> only the first six registers are compatible, while the later
>> ones are all different, and it's not 8250 compatible.
>
> So use the normal name for compatible ones and HW specific names for the
> others?
>
> It might not be compatible in everything but surely 8250 influence is
> visible here and there.

I'd rename all of them and share nothing. I had the same thought as you
when I first looked at the driver, and thought of how we merged the omap
uart into 8250 for this reason, but after I found a datasheet for this
one, my impression was that it's a much more distant cousin of 8250
than the others,

There is clearly some family lineage, but there are differences
everywhere, and I don't think it was designed by extending a 8250
compatible hardware block with extra features, but rather built
from scratch (sigh) based only loosely on a register description
but then extending it with no intent of retaining compatibility.

Arnd

2023-05-09 12:42:31

by Arnd Bergmann

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

On Tue, May 9, 2023, at 12:17, Ilpo Järvinen wrote:
> On Mon, 8 May 2023, Jacky Huang wrote:
>> +
>> +#define UART_NR 17
>> +
>> +#define UART_REG_RBR 0x00
>> +#define UART_REG_THR 0x00
>> +#define UART_REG_IER 0x04
>> +#define UART_REG_FCR 0x08
>> +#define UART_REG_LCR 0x0C
>> +#define UART_REG_MCR 0x10
>
> These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
> directly.
>
> Setup regshift too and use it in serial_in.

I think this came up in previous reviews, but it turned out that
only the first six registers are compatible, while the later
ones are all different, and it's not 8250 compatible.

It might be helpful to rename the registers to something
with a prefix other than UART_REG_*, to avoid the confusion
and possible namespace clash.

>
>> +/* UART_REG_IER - Interrupt Enable Register */
>> +#define IER_RDA_IEN BIT(0) /* RBR Available Interrupt Enable */
>> +#define IER_THRE_IEN BIT(1) /* THR Empty Interrupt Enable */
>> +#define IER_RLS_IEN BIT(2) /* RX Line Status Interrupt Enable */
>
> These look same as UART_IER bits, use the std ones.
...
> Are these same as UART_FCR_CLEAR_* functionality wise? If they're use std
> ones.

Again, I'd think we're better off having a distinct naming for
them than trying to share the definitions with 8250.

>> +static struct uart_driver ma35d1serial_reg = {
>> + .owner = THIS_MODULE,
>> + .driver_name = "serial",
>> + .dev_name = "ttyS",
>> + .major = TTY_MAJOR,
>> + .minor = 64,
>> + .cons = MA35D1SERIAL_CONSOLE,
>> + .nr = UART_NR,
>> +};
>
> This doesn't seem necessary, 8250 core will have the uart_driver for you
> and most of the console stuff too. You just need to setup a few things
> correctly (see the setup functions in 8250_early for ideas/examples).
>...
>> +
>> + ret = uart_add_one_port(&ma35d1serial_reg, &up->port);
>
> For 8250, you should be using serial8250_register_8250_port(). See the
> other drivers how to setup the console functions.

Consequently, this should also be kept separate from the serial8250
driver, I don't see a way to fit the nuvoton code into the existing
driver without making the resulting driver worse for everyone.

There is one thing that absolutely needs to be changed though:
the driver_name/dev_name/major/minor fields all clash with the
8250 driver, so you cannot have a kernel that has both drivers
built-in. All of these should change to get out of the way of the
existing drivers.

Arnd

2023-05-10 01:53:57

by Jacky Huang

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

Dear Arnd and Ilpo,


Thank you for the comments.


On 2023/5/9 下午 08:32, Arnd Bergmann wrote:
> On Tue, May 9, 2023, at 14:25, Ilpo Järvinen wrote:
>> On Tue, 9 May 2023, Arnd Bergmann wrote:
>>> On Tue, May 9, 2023, at 12:17, Ilpo Järvinen wrote:
>>>> On Mon, 8 May 2023, Jacky Huang wrote:
>>>>> +
>>>>> +#define UART_NR 17
>>>>> +
>>>>> +#define UART_REG_RBR 0x00
>>>>> +#define UART_REG_THR 0x00
>>>>> +#define UART_REG_IER 0x04
>>>>> +#define UART_REG_FCR 0x08
>>>>> +#define UART_REG_LCR 0x0C
>>>>> +#define UART_REG_MCR 0x10
>>>> These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
>>>> directly.
>>>>
>>>> Setup regshift too and use it in serial_in.
>>> I think this came up in previous reviews, but it turned out that
>>> only the first six registers are compatible, while the later
>>> ones are all different, and it's not 8250 compatible.
>> So use the normal name for compatible ones and HW specific names for the
>> others?
>>
>> It might not be compatible in everything but surely 8250 influence is
>> visible here and there.
> I'd rename all of them and share nothing. I had the same thought as you
> when I first looked at the driver, and thought of how we merged the omap
> uart into 8250 for this reason, but after I found a datasheet for this
> one, my impression was that it's a much more distant cousin of 8250
> than the others,
>
> There is clearly some family lineage, but there are differences
> everywhere, and I don't think it was designed by extending a 8250
> compatible hardware block with extra features, but rather built
> from scratch (sigh) based only loosely on a register description
> but then extending it with no intent of retaining compatibility.
>
> Arnd

Yes, the design of this UART IP is indeed incompatible with the 8250, but it
does imitate the 8250 in some register and register bit field naming, and
even in usage definitions, which can easily lead to misunderstandings.

In order to distinguish it from the 8250 and make it clear that it has
nothing
to do with the 8250, I hope you can agree with me not to use the existing
register and bit field definitions of the 8250 in this driver.

In fact, this UART design has been used for more than 15 years and is used
in our M0/M23/M4, ARM7/ARM9 MCUs and MPUs. The MA35 series will also
continue to use this design. I will add the MA35_ prefix to all
registers and bit
fields, and make the modifications suggested by Ilpo that are unrelated to
this 8250 issue.


Best Regards,
Jacky Huang

2023-05-10 11:06:43

by Arnd Bergmann

Subject: Re: [PATCH v10 10/10] tty: serial: Add Nuvoton ma35d1 serial driver support

On Wed, May 10, 2023, at 03:26, Jacky Huang wrote:
> On 2023/5/9 下午 08:32, Arnd Bergmann wrote:
>> On Tue, May 9, 2023, at 14:25, Ilpo Järvinen wrote:
>>> On Tue, 9 May 2023, Arnd Bergmann wrote:
>>>> On Tue, May 9, 2023, at 12:17, Ilpo Järvinen wrote:
>>>>> On Mon, 8 May 2023, Jacky Huang wrote:
>>>>>> +
>>>>>> +#define UART_NR 17
>>>>>> +
>>>>>> +#define UART_REG_RBR 0x00
>>>>>> +#define UART_REG_THR 0x00
>>>>>> +#define UART_REG_IER 0x04
>>>>>> +#define UART_REG_FCR 0x08
>>>>>> +#define UART_REG_LCR 0x0C
>>>>>> +#define UART_REG_MCR 0x10
>>>>> These duplicate include/uapi/linux/serial_reg.h ones, use the std ones
>>>>> directly.
...
>>
>> There is clearly some family lineage, but there are differences
>> everywhere, and I don't think it was designed by extending a 8250
>> compatible hardware block with extra features, but rather built
>> from scratch (sigh) based only loosely on a register description
>> but then extending it with no intent of retaining compatibility.
>>
>
> Yes, the design of this UART IP is indeed incompatible with the 8250, but it
> does imitate the 8250 in some register and register bit field naming, and
> even in usage definitions, which can easily lead to misunderstandings.
>
> In order to distinguish it from the 8250 and make it clear that it has
> nothing
> to do with the 8250, I hope you can agree with me not to use the existing
> register and bit field definitions of the 8250 in this driver.
>
> In fact, this UART design has been used for more than 15 years and is used
> in our M0/M23/M4, ARM7/ARM9 MCUs and MPUs. The MA35 series will also
> continue to use this design. I will add the MA35_ prefix to all
> registers and bit
> fields, and make the modifications suggested by Ilpo that are unrelated to
> this 8250 issue.

Sounds good to me, thanks! It would be good if Jiri or GregKH can also
weigh in to make sure they agree on this approach.

On the topic of tty namespace, please also add the change that I suggested
to pick an unused major/minor number range. I'm not entirely sure about
whether using name="ttyS" is actually preferred here or if you should
pick something else here as well. I see that "ttyN" has no other users
are the moment, though "ttyn" is what drivers/tty/serial/jsm/ has.

Maybe Jiri can also recommend what to pick here.

Arnd