The Audio Clock Mux (ACM) is a collection of control registers
and multiplexers that are used to route the audio source clocks
to the audio peripherals on i.MX8QXP, i.MX8QM, i.MX8DXL
Shengjiu Wang (3):
dt-bindings: clock: fsl,imx8-acm: Add audio clock mux support
clk: imx8: Add audio clock mux related clock
clk: imx: imx8: add audio clock mux driver
changes in v2:
- update yaml file according to review comments
.../bindings/clock/fsl,imx8-acm.yaml | 159 ++++++
drivers/clk/imx/Makefile | 2 +-
drivers/clk/imx/clk-imx8-acm.c | 477 ++++++++++++++++++
include/dt-bindings/clock/imx8-clock.h | 28 +
4 files changed, 665 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
create mode 100644 drivers/clk/imx/clk-imx8-acm.c
--
2.34.1
Add the clock dt-binding file for audio clock mux. which
is the IP for i.MX8QM, i.MX8QXP, i.MX8DXL.
Signed-off-by: Shengjiu Wang <[email protected]>
---
.../bindings/clock/fsl,imx8-acm.yaml | 159 ++++++++++++++++++
1 file changed, 159 insertions(+)
create mode 100644 Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
diff --git a/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml b/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
new file mode 100644
index 000000000000..b79dd080c008
--- /dev/null
+++ b/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/clock/fsl,imx8-acm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP i.MX8 Audio Clock Mux
+
+maintainers:
+ - Shengjiu Wang <[email protected]>
+
+description: |
+ NXP i.MX8 Audio Clock Mux is dedicated clock muxing IP
+ used to control Audio related clock on the SoC.
+
+properties:
+ compatible:
+ enum:
+ - nxp,imx8qm-acm
+ - nxp,imx8qxp-acm
+ - nxp,imx8dxl-acm
+
+ reg:
+ maxItems: 1
+
+ power-domains:
+ description:
+ List of phandle and PM domain specifier as documented in
+ Documentation/devicetree/bindings/power/power_domain.txt
+ minItems: 13
+ maxItems: 21
+
+ '#clock-cells':
+ const: 1
+ description:
+ The clock consumer should specify the desired clock by having the clock
+ ID in its "clocks" phandle cell. See include/dt-bindings/clock/imx8-clock.h
+ for the full list of i.MX8 ACM clock IDs.
+
+required:
+ - compatible
+ - reg
+ - power-domains
+ - '#clock-cells'
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - nxp,imx8qxp-acm
+ then:
+ properties:
+ power-domains:
+ items:
+ - description: power domain of IMX_SC_R_AUDIO_CLK_0
+ - description: power domain of IMX_SC_R_AUDIO_CLK_1
+ - description: power domain of IMX_SC_R_MCLK_OUT_0
+ - description: power domain of IMX_SC_R_MCLK_OUT_1
+ - description: power domain of IMX_SC_R_AUDIO_PLL_0
+ - description: power domain of IMX_SC_R_AUDIO_PLL_1
+ - description: power domain of IMX_SC_R_ASRC_0
+ - description: power domain of IMX_SC_R_ASRC_1
+ - description: power domain of IMX_SC_R_ESAI_0
+ - description: power domain of IMX_SC_R_SAI_0
+ - description: power domain of IMX_SC_R_SAI_1
+ - description: power domain of IMX_SC_R_SAI_2
+ - description: power domain of IMX_SC_R_SAI_3
+ - description: power domain of IMX_SC_R_SAI_4
+ - description: power domain of IMX_SC_R_SAI_5
+ - description: power domain of IMX_SC_R_SPDIF_0
+ - description: power domain of IMX_SC_R_MQS_0
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - nxp,imx8qm-acm
+ then:
+ properties:
+ power-domains:
+ items:
+ - description: power domain of IMX_SC_R_AUDIO_CLK_0
+ - description: power domain of IMX_SC_R_AUDIO_CLK_1
+ - description: power domain of IMX_SC_R_MCLK_OUT_0
+ - description: power domain of IMX_SC_R_MCLK_OUT_1
+ - description: power domain of IMX_SC_R_AUDIO_PLL_0
+ - description: power domain of IMX_SC_R_AUDIO_PLL_1
+ - description: power domain of IMX_SC_R_ASRC_0
+ - description: power domain of IMX_SC_R_ASRC_1
+ - description: power domain of IMX_SC_R_ESAI_0
+ - description: power domain of IMX_SC_R_ESAI_1
+ - description: power domain of IMX_SC_R_SAI_0
+ - description: power domain of IMX_SC_R_SAI_1
+ - description: power domain of IMX_SC_R_SAI_2
+ - description: power domain of IMX_SC_R_SAI_3
+ - description: power domain of IMX_SC_R_SAI_4
+ - description: power domain of IMX_SC_R_SAI_5
+ - description: power domain of IMX_SC_R_SAI_6
+ - description: power domain of IMX_SC_R_SAI_7
+ - description: power domain of IMX_SC_R_SPDIF_0
+ - description: power domain of IMX_SC_R_SPDIF_1
+ - description: power domain of IMX_SC_R_MQS_0
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - nxp,imx8dxl-acm
+ then:
+ properties:
+ power-domains:
+ items:
+ - description: power domain of IMX_SC_R_AUDIO_CLK_0
+ - description: power domain of IMX_SC_R_AUDIO_CLK_1
+ - description: power domain of IMX_SC_R_MCLK_OUT_0
+ - description: power domain of IMX_SC_R_MCLK_OUT_1
+ - description: power domain of IMX_SC_R_AUDIO_PLL_0
+ - description: power domain of IMX_SC_R_AUDIO_PLL_1
+ - description: power domain of IMX_SC_R_ASRC_0
+ - description: power domain of IMX_SC_R_SAI_0
+ - description: power domain of IMX_SC_R_SAI_1
+ - description: power domain of IMX_SC_R_SAI_2
+ - description: power domain of IMX_SC_R_SAI_3
+ - description: power domain of IMX_SC_R_SPDIF_0
+ - description: power domain of IMX_SC_R_MQS_0
+
+additionalProperties: false
+
+examples:
+ # Clock Control Module node:
+ - |
+ #include <dt-bindings/firmware/imx/rsrc.h>
+
+ clock-controller@59e00000 {
+ compatible = "nxp,imx8qxp-acm";
+ reg = <0x59e00000 0x1d0000>;
+ #clock-cells = <1>;
+ power-domains = <&pd IMX_SC_R_AUDIO_CLK_0>,
+ <&pd IMX_SC_R_AUDIO_CLK_1>,
+ <&pd IMX_SC_R_MCLK_OUT_0>,
+ <&pd IMX_SC_R_MCLK_OUT_1>,
+ <&pd IMX_SC_R_AUDIO_PLL_0>,
+ <&pd IMX_SC_R_AUDIO_PLL_1>,
+ <&pd IMX_SC_R_ASRC_0>,
+ <&pd IMX_SC_R_ASRC_1>,
+ <&pd IMX_SC_R_ESAI_0>,
+ <&pd IMX_SC_R_SAI_0>,
+ <&pd IMX_SC_R_SAI_1>,
+ <&pd IMX_SC_R_SAI_2>,
+ <&pd IMX_SC_R_SAI_3>,
+ <&pd IMX_SC_R_SAI_4>,
+ <&pd IMX_SC_R_SAI_5>,
+ <&pd IMX_SC_R_SPDIF_0>,
+ <&pd IMX_SC_R_MQS_0>;
+ };
--
2.34.1
The Audio Clock Mux (ACM) is a collection of control registers
and multiplexers that are used to route the audio source clocks
to the audio peripherals.
Each audio peripheral has its dedicated audio clock mux
(which differ based on usage) and control register.
Signed-off-by: Shengjiu Wang <[email protected]>
---
drivers/clk/imx/Makefile | 2 +-
drivers/clk/imx/clk-imx8-acm.c | 477 +++++++++++++++++++++++++++++++++
2 files changed, 478 insertions(+), 1 deletion(-)
create mode 100644 drivers/clk/imx/clk-imx8-acm.c
diff --git a/drivers/clk/imx/Makefile b/drivers/clk/imx/Makefile
index ae9d84ef046b..27a96085ad10 100644
--- a/drivers/clk/imx/Makefile
+++ b/drivers/clk/imx/Makefile
@@ -35,7 +35,7 @@ obj-$(CONFIG_CLK_IMX93) += clk-imx93.o
obj-$(CONFIG_MXC_CLK_SCU) += clk-imx-scu.o clk-imx-lpcg-scu.o
clk-imx-scu-$(CONFIG_CLK_IMX8QXP) += clk-scu.o clk-imx8qxp.o \
clk-imx8qxp-rsrc.o clk-imx8qm-rsrc.o \
- clk-imx8dxl-rsrc.o
+ clk-imx8dxl-rsrc.o clk-imx8-acm.o
clk-imx-lpcg-scu-$(CONFIG_CLK_IMX8QXP) += clk-lpcg-scu.o clk-imx8qxp-lpcg.o
obj-$(CONFIG_CLK_IMX8ULP) += clk-imx8ulp.o
diff --git a/drivers/clk/imx/clk-imx8-acm.c b/drivers/clk/imx/clk-imx8-acm.c
new file mode 100644
index 000000000000..70fb068fdf18
--- /dev/null
+++ b/drivers/clk/imx/clk-imx8-acm.c
@@ -0,0 +1,477 @@
+// SPDX-License-Identifier: GPL-2.0+
+//
+// Copyright 2018-2023 NXP
+//
+
+#include <dt-bindings/clock/imx8-clock.h>
+#include <linux/clk-provider.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+
+#include "clk.h"
+
+/**
+ * struct clk_imx_acm_pm_domains: structure for multi power domain
+ * @pd_dev: power domain device
+ * @pd_dev_link: power domain device link
+ * @num_domains: power domain nummber
+ */
+struct clk_imx_acm_pm_domains {
+ struct device **pd_dev;
+ struct device_link **pd_dev_link;
+ int num_domains;
+};
+
+/**
+ * struct clk_imx8_acm_sel: for clock mux
+ * @name: clock name
+ * @clkid: clock id
+ * @parents: clock parents
+ * @num_parents: clock parents number
+ * @reg: register offset
+ * @shift: bit shift in register
+ * @width: bits width
+ */
+struct clk_imx8_acm_sel {
+ const char *name;
+ int clkid;
+ const struct clk_parent_data *parents; /* For mux */
+ int num_parents;
+ u32 reg;
+ u8 shift;
+ u8 width;
+};
+
+/**
+ * struct imx8_acm_soc_data: soc specific data
+ * @sels: pointer to struct clk_imx8_acm_sel
+ * @num_sels: numbers of items
+ */
+struct imx8_acm_soc_data {
+ struct clk_imx8_acm_sel *sels;
+ unsigned int num_sels;
+};
+
+/**
+ * struct imx8_acm_priv: private structure
+ * @dev_pm: multi power domain
+ * @soc_data: pointer to soc data
+ * @reg: base address of registers
+ * @regs: save registers for suspend
+ */
+struct imx8_acm_priv {
+ struct clk_imx_acm_pm_domains dev_pm;
+ const struct imx8_acm_soc_data *soc_data;
+ void __iomem *reg;
+ u32 regs[IMX_ADMA_ACM_CLK_END];
+};
+
+static const struct clk_parent_data imx8qm_aud_clk_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.fw_name = "mlb_clk", .name = "mlb_clk" },
+ {.fw_name = "hdmi_rx_mclk", .name = "hdmi_rx_mclk" },
+ {.fw_name = "ext_aud_mclk0", .name = "ext_aud_mclk0" },
+ {.fw_name = "ext_aud_mclk1", .name = "ext_aud_mclk1" },
+ {.fw_name = "esai0_rx_clk", .name = "esai0_rx_clk" },
+ {.fw_name = "esai0_rx_hf_clk", .name = "esai0_rx_hf_clk" },
+ {.fw_name = "esai0_tx_clk", .name = "esai0_tx_clk" },
+ {.fw_name = "esai0_tx_hf_clk", .name = "esai0_tx_hf_clk" },
+ {.fw_name = "esai1_rx_clk", .name = "esai1_rx_clk" },
+ {.fw_name = "esai1_rx_hf_clk", .name = "esai1_rx_hf_clk" },
+ {.fw_name = "esai1_tx_clk", .name = "esai1_tx_clk" },
+ {.fw_name = "esai1_tx_hf_clk", .name = "esai1_tx_hf_clk" },
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.fw_name = "spdif1_rx", .name = "spdif1_rx" },
+ {.fw_name = "sai0_rx_bclk", .name = "sai0_rx_bclk" },
+ {.fw_name = "sai0_tx_bclk", .name = "sai0_tx_bclk" },
+ {.fw_name = "sai1_rx_bclk", .name = "sai1_rx_bclk" },
+ {.fw_name = "sai1_tx_bclk", .name = "sai1_tx_bclk" },
+ {.fw_name = "sai2_rx_bclk", .name = "sai2_rx_bclk" },
+ {.fw_name = "sai3_rx_bclk", .name = "sai3_rx_bclk" },
+ {.fw_name = "sai4_rx_bclk", .name = "sai4_rx_bclk" },
+};
+
+static const struct clk_parent_data imx8qm_mclk_out_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.fw_name = "mlb_clk", .name = "mlb_clk" },
+ {.fw_name = "hdmi_rx_mclk", .name = "hdmi_rx_mclk" },
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.fw_name = "spdif1_rx", .name = "spdif1_rx" },
+ {.fw_name = "sai4_rx_bclk", .name = "sai4_rx_bclk" },
+ {.fw_name = "sai6_rx_bclk", .name = "sai6_rx_bclk" },
+};
+
+static const struct clk_parent_data imx8qm_mclk_sels[] = {
+ {.fw_name = "aud_pll_div_clk0_lpcg_clk", .name = "aud_pll_div_clk0_lpcg_clk" },
+ {.fw_name = "aud_pll_div_clk1_lpcg_clk", .name = "aud_pll_div_clk1_lpcg_clk" },
+ {.fw_name = "acm_aud_clk0_sel", .name = "acm_aud_clk0_sel" },
+ {.fw_name = "acm_aud_clk1_sel", .name = "acm_aud_clk1_sel" },
+};
+
+static const struct clk_parent_data imx8qm_asrc_mux_clk_sels[] = {
+ {.fw_name = "sai4_rx_bclk", .name = "sai4_rx_bclk" },
+ {.fw_name = "sai5_tx_bclk", .name = "sai5_tx_bclk" },
+ {.name = "dummy" },
+ {.fw_name = "mlb_clk", .name = "mlb_clk" },
+
+};
+
+static struct clk_imx8_acm_sel imx8qm_sels[] = {
+ {"acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8qm_aud_clk_sels, ARRAY_SIZE(imx8qm_aud_clk_sels), 0x000000, 0, 5},
+ {"acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8qm_aud_clk_sels, ARRAY_SIZE(imx8qm_aud_clk_sels), 0x010000, 0, 5},
+ {"acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8qm_mclk_out_sels, ARRAY_SIZE(imx8qm_mclk_out_sels), 0x020000, 0, 3},
+ {"acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8qm_mclk_out_sels, ARRAY_SIZE(imx8qm_mclk_out_sels), 0x030000, 0, 3},
+ {"acm_asrc0_mclk_sel", IMX_ADMA_ACM_ASRC0_MUX_CLK_SEL, imx8qm_asrc_mux_clk_sels, ARRAY_SIZE(imx8qm_asrc_mux_clk_sels), 0x040000, 0, 2},
+ {"acm_esai0_mclk_sel", IMX_ADMA_ACM_ESAI0_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x060000, 0, 2},
+ {"acm_esai1_mclk_sel", IMX_ADMA_ACM_ESAI1_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x070000, 0, 2},
+ {"acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x0E0000, 0, 2},
+ {"acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x0F0000, 0, 2},
+ {"acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x100000, 0, 2},
+ {"acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x110000, 0, 2},
+ {"acm_sai4_mclk_sel", IMX_ADMA_ACM_SAI4_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x120000, 0, 2},
+ {"acm_sai5_mclk_sel", IMX_ADMA_ACM_SAI5_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x130000, 0, 2},
+ {"acm_sai6_mclk_sel", IMX_ADMA_ACM_SAI6_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x140000, 0, 2},
+ {"acm_sai7_mclk_sel", IMX_ADMA_ACM_SAI7_MCLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x150000, 0, 2},
+ {"acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1A0000, 0, 2},
+ {"acm_spdif1_mclk_sel", IMX_ADMA_ACM_SPDIF1_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1B0000, 0, 2},
+ {"acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8qm_mclk_sels, ARRAY_SIZE(imx8qm_mclk_sels), 0x1C0000, 0, 2},
+};
+
+static const struct clk_parent_data imx8qxp_aud_clk_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.fw_name = "ext_aud_mclk0", .name = "ext_aud_mclk0" },
+ {.fw_name = "ext_aud_mclk1", .name = "ext_aud_mclk1" },
+ {.fw_name = "esai0_rx_clk", .name = "esai0_rx_clk" },
+ {.fw_name = "esai0_rx_hf_clk", .name = "esai0_rx_hf_clk" },
+ {.fw_name = "esai0_tx_clk", .name = "esai0_tx_clk" },
+ {.fw_name = "esai0_tx_hf_clk", .name = "esai0_tx_hf_clk" },
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.fw_name = "sai0_rx_bclk", .name = "sai0_rx_bclk" },
+ {.fw_name = "sai0_tx_bclk", .name = "sai0_tx_bclk" },
+ {.fw_name = "sai1_rx_bclk", .name = "sai1_rx_bclk" },
+ {.fw_name = "sai1_tx_bclk", .name = "sai1_tx_bclk" },
+ {.fw_name = "sai2_rx_bclk", .name = "sai2_rx_bclk" },
+ {.fw_name = "sai3_rx_bclk", .name = "sai3_rx_bclk" },
+};
+
+static const struct clk_parent_data imx8qxp_mclk_out_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.fw_name = "sai4_rx_bclk", .name = "sai4_rx_bclk" },
+};
+
+static const struct clk_parent_data imx8qxp_mclk_sels[] = {
+ {.fw_name = "aud_pll_div_clk0_lpcg_clk", .name = "aud_pll_div_clk0_lpcg_clk" },
+ {.fw_name = "aud_pll_div_clk1_lpcg_clk", .name = "aud_pll_div_clk1_lpcg_clk" },
+ {.fw_name = "acm_aud_clk0_sel", .name = "acm_aud_clk0_sel" },
+ {.fw_name = "acm_aud_clk1_sel", .name = "acm_aud_clk1_sel" },
+};
+
+static struct clk_imx8_acm_sel imx8qxp_sels[] = {
+ {"acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8qxp_aud_clk_sels, ARRAY_SIZE(imx8qxp_aud_clk_sels), 0x000000, 0, 5},
+ {"acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8qxp_aud_clk_sels, ARRAY_SIZE(imx8qxp_aud_clk_sels), 0x010000, 0, 5},
+ {"acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8qxp_mclk_out_sels, ARRAY_SIZE(imx8qxp_mclk_out_sels), 0x020000, 0, 3},
+ {"acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8qxp_mclk_out_sels, ARRAY_SIZE(imx8qxp_mclk_out_sels), 0x030000, 0, 3},
+ {"acm_esai0_mclk_sel", IMX_ADMA_ACM_ESAI0_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x060000, 0, 2},
+ {"acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x0E0000, 0, 2},
+ {"acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x0F0000, 0, 2},
+ {"acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x100000, 0, 2},
+ {"acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x110000, 0, 2},
+ {"acm_sai4_mclk_sel", IMX_ADMA_ACM_SAI4_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x140000, 0, 2},
+ {"acm_sai5_mclk_sel", IMX_ADMA_ACM_SAI5_MCLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x150000, 0, 2},
+ {"acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x1A0000, 0, 2},
+ {"acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8qxp_mclk_sels, ARRAY_SIZE(imx8qxp_mclk_sels), 0x1C0000, 0, 2},
+};
+
+static const struct clk_parent_data imx8dxl_aud_clk_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.fw_name = "ext_aud_mclk0", .name = "ext_aud_mclk0" },
+ {.fw_name = "ext_aud_mclk1", .name = "ext_aud_mclk1" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.fw_name = "sai0_rx_bclk", .name = "sai0_rx_bclk" },
+ {.fw_name = "sai0_tx_bclk", .name = "sai0_tx_bclk" },
+ {.fw_name = "sai1_rx_bclk", .name = "sai1_rx_bclk" },
+ {.fw_name = "sai1_tx_bclk", .name = "sai1_tx_bclk" },
+ {.fw_name = "sai2_rx_bclk", .name = "sai2_rx_bclk" },
+ {.fw_name = "sai3_rx_bclk", .name = "sai3_rx_bclk" },
+};
+
+static const struct clk_parent_data imx8dxl_mclk_out_sels[] = {
+ {.fw_name = "aud_rec_clk0_lpcg_clk", .name = "aud_rec_clk0_lpcg_clk" },
+ {.fw_name = "aud_rec_clk1_lpcg_clk", .name = "aud_rec_clk1_lpcg_clk" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.fw_name = "spdif0_rx", .name = "spdif0_rx" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+ {.name = "dummy" },
+};
+
+static const struct clk_parent_data imx8dxl_mclk_sels[] = {
+ {.fw_name = "aud_pll_div_clk0_lpcg_clk", .name = "aud_pll_div_clk0_lpcg_clk" },
+ {.fw_name = "aud_pll_div_clk1_lpcg_clk", .name = "aud_pll_div_clk1_lpcg_clk" },
+ {.fw_name = "acm_aud_clk0_sel", .name = "acm_aud_clk0_sel" },
+ {.fw_name = "acm_aud_clk1_sel", .name = "acm_aud_clk1_sel" },
+};
+
+static struct clk_imx8_acm_sel imx8dxl_sels[] = {
+ {"acm_aud_clk0_sel", IMX_ADMA_ACM_AUD_CLK0_SEL, imx8dxl_aud_clk_sels, ARRAY_SIZE(imx8dxl_aud_clk_sels), 0x000000, 0, 5},
+ {"acm_aud_clk1_sel", IMX_ADMA_ACM_AUD_CLK1_SEL, imx8dxl_aud_clk_sels, ARRAY_SIZE(imx8dxl_aud_clk_sels), 0x010000, 0, 5},
+ {"acm_mclkout0_sel", IMX_ADMA_ACM_MCLKOUT0_SEL, imx8dxl_mclk_out_sels, ARRAY_SIZE(imx8dxl_mclk_out_sels), 0x020000, 0, 3},
+ {"acm_mclkout1_sel", IMX_ADMA_ACM_MCLKOUT1_SEL, imx8dxl_mclk_out_sels, ARRAY_SIZE(imx8dxl_mclk_out_sels), 0x030000, 0, 3},
+ {"acm_sai0_mclk_sel", IMX_ADMA_ACM_SAI0_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x0E0000, 0, 2},
+ {"acm_sai1_mclk_sel", IMX_ADMA_ACM_SAI1_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x0F0000, 0, 2},
+ {"acm_sai2_mclk_sel", IMX_ADMA_ACM_SAI2_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x100000, 0, 2},
+ {"acm_sai3_mclk_sel", IMX_ADMA_ACM_SAI3_MCLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x110000, 0, 2},
+ {"acm_spdif0_mclk_sel", IMX_ADMA_ACM_SPDIF0_TX_CLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x1A0000, 0, 2},
+ {"acm_mqs_mclk_sel", IMX_ADMA_ACM_MQS_TX_CLK_SEL, imx8dxl_mclk_sels, ARRAY_SIZE(imx8dxl_mclk_sels), 0x1C0000, 0, 2},
+};
+
+/**
+ * clk_imx_acm_attach_pm_domains: attach multi power domains
+ * @dev: device pointer
+ * @dev_pm: power domains for device
+ */
+static int clk_imx_acm_attach_pm_domains(struct device *dev,
+ struct clk_imx_acm_pm_domains *dev_pm)
+{
+ int ret;
+ int i;
+
+ dev_pm->num_domains = of_count_phandle_with_args(dev->of_node, "power-domains",
+ "#power-domain-cells");
+ if (dev_pm->num_domains <= 1)
+ return 0;
+
+ dev_pm->pd_dev = devm_kmalloc_array(dev, dev_pm->num_domains,
+ sizeof(*dev_pm->pd_dev),
+ GFP_KERNEL);
+ if (!dev_pm->pd_dev)
+ return -ENOMEM;
+
+ dev_pm->pd_dev_link = devm_kmalloc_array(dev,
+ dev_pm->num_domains,
+ sizeof(*dev_pm->pd_dev_link),
+ GFP_KERNEL);
+ if (!dev_pm->pd_dev_link)
+ return -ENOMEM;
+
+ for (i = 0; i < dev_pm->num_domains; i++) {
+ dev_pm->pd_dev[i] = dev_pm_domain_attach_by_id(dev, i);
+ if (IS_ERR(dev_pm->pd_dev[i]))
+ return PTR_ERR(dev_pm->pd_dev[i]);
+
+ dev_pm->pd_dev_link[i] = device_link_add(dev,
+ dev_pm->pd_dev[i],
+ DL_FLAG_STATELESS |
+ DL_FLAG_PM_RUNTIME |
+ DL_FLAG_RPM_ACTIVE);
+ if (IS_ERR(dev_pm->pd_dev_link[i])) {
+ dev_pm_domain_detach(dev_pm->pd_dev[i], false);
+ ret = PTR_ERR(dev_pm->pd_dev_link[i]);
+ goto detach_pm;
+ }
+ }
+ return 0;
+
+detach_pm:
+ while (--i >= 0) {
+ device_link_del(dev_pm->pd_dev_link[i]);
+ dev_pm_domain_detach(dev_pm->pd_dev[i], false);
+ }
+ return ret;
+}
+
+/**
+ * clk_imx_acm_detach_pm_domains: detach multi power domains
+ * @dev: deivice pointer
+ * @dev_pm: multi power domain for device
+ */
+static int clk_imx_acm_detach_pm_domains(struct device *dev,
+ struct clk_imx_acm_pm_domains *dev_pm)
+{
+ int i;
+
+ if (dev_pm->num_domains <= 1)
+ return 0;
+
+ for (i = 0; i < dev_pm->num_domains; i++) {
+ device_link_del(dev_pm->pd_dev_link[i]);
+ dev_pm_domain_detach(dev_pm->pd_dev[i], false);
+ }
+
+ return 0;
+}
+
+static int imx8_acm_clk_probe(struct platform_device *pdev)
+{
+ struct clk_hw_onecell_data *clk_hw_data;
+ struct device *dev = &pdev->dev;
+ struct clk_imx8_acm_sel *sels;
+ struct imx8_acm_priv *priv;
+ struct resource *res;
+ struct clk_hw **hws;
+ void __iomem *base;
+ int ret;
+ int i;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ base = devm_ioremap(dev, res->start, resource_size(res));
+ if (!base)
+ return -ENOMEM;
+
+ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->reg = base;
+ priv->soc_data = of_device_get_match_data(dev);
+ platform_set_drvdata(pdev, priv);
+
+ clk_hw_data = kzalloc(struct_size(clk_hw_data, hws,
+ IMX_ADMA_ACM_CLK_END), GFP_KERNEL);
+
+ clk_hw_data->num = IMX_ADMA_ACM_CLK_END;
+ hws = clk_hw_data->hws;
+
+ ret = clk_imx_acm_attach_pm_domains(&pdev->dev, &priv->dev_pm);
+ if (ret)
+ return ret;
+
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_get_sync(&pdev->dev);
+
+ sels = priv->soc_data->sels;
+ for (i = 0; i < priv->soc_data->num_sels; i++) {
+ hws[sels[i].clkid] = devm_clk_hw_register_mux_parent_data_table(dev,
+ sels[i].name, sels[i].parents,
+ sels[i].num_parents, 0,
+ base + sels[i].reg,
+ sels[i].shift, sels[i].width,
+ 0, NULL, NULL);
+ if (IS_ERR(hws[sels[i].clkid])) {
+ pm_runtime_disable(&pdev->dev);
+ goto err_clk_register;
+ }
+ }
+
+ imx_check_clk_hws(hws, IMX_ADMA_ACM_CLK_END);
+
+ ret = devm_of_clk_add_hw_provider(dev, of_clk_hw_onecell_get, clk_hw_data);
+ if (ret < 0) {
+ dev_err(dev, "failed to register hws for ACM\n");
+ pm_runtime_disable(&pdev->dev);
+ }
+
+err_clk_register:
+
+ pm_runtime_put_sync(&pdev->dev);
+
+ return ret;
+}
+
+static int imx8_acm_clk_remove(struct platform_device *pdev)
+{
+ struct imx8_acm_priv *priv = dev_get_drvdata(&pdev->dev);
+
+ pm_runtime_disable(&pdev->dev);
+
+ clk_imx_acm_detach_pm_domains(&pdev->dev, &priv->dev_pm);
+
+ return 0;
+}
+
+static const struct imx8_acm_soc_data imx8qm_acm_data = {
+ .sels = imx8qm_sels,
+ .num_sels = ARRAY_SIZE(imx8qm_sels),
+};
+
+static const struct imx8_acm_soc_data imx8qxp_acm_data = {
+ .sels = imx8qxp_sels,
+ .num_sels = ARRAY_SIZE(imx8qxp_sels),
+};
+
+static const struct imx8_acm_soc_data imx8dxl_acm_data = {
+ .sels = imx8dxl_sels,
+ .num_sels = ARRAY_SIZE(imx8dxl_sels),
+};
+
+static const struct of_device_id imx8_acm_match[] = {
+ { .compatible = "nxp,imx8qm-acm", .data = &imx8qm_acm_data },
+ { .compatible = "nxp,imx8qxp-acm", .data = &imx8qxp_acm_data },
+ { .compatible = "nxp,imx8dxl-acm", .data = &imx8dxl_acm_data },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx8_acm_match);
+
+static int __maybe_unused imx8_acm_runtime_suspend(struct device *dev)
+{
+ struct imx8_acm_priv *priv = dev_get_drvdata(dev);
+ struct clk_imx8_acm_sel *sels;
+ int i;
+
+ sels = priv->soc_data->sels;
+
+ for (i = 0; i < priv->soc_data->num_sels; i++)
+ priv->regs[i] = readl_relaxed(priv->reg + sels[i].reg);
+
+ return 0;
+}
+
+static int __maybe_unused imx8_acm_runtime_resume(struct device *dev)
+{
+ struct imx8_acm_priv *priv = dev_get_drvdata(dev);
+ struct clk_imx8_acm_sel *sels;
+ int i;
+
+ sels = priv->soc_data->sels;
+
+ for (i = 0; i < priv->soc_data->num_sels; i++)
+ writel_relaxed(priv->regs[i], priv->reg + sels[i].reg);
+
+ return 0;
+}
+
+static const struct dev_pm_ops imx8_acm_pm_ops = {
+ SET_RUNTIME_PM_OPS(imx8_acm_runtime_suspend,
+ imx8_acm_runtime_resume, NULL)
+ SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
+ pm_runtime_force_resume)
+};
+
+static struct platform_driver imx8_acm_clk_driver = {
+ .driver = {
+ .name = "imx8-acm",
+ .of_match_table = imx8_acm_match,
+ .pm = &imx8_acm_pm_ops,
+ },
+ .probe = imx8_acm_clk_probe,
+ .remove = imx8_acm_clk_remove,
+};
+module_platform_driver(imx8_acm_clk_driver);
+
+MODULE_AUTHOR("Shengjiu Wang <[email protected]>");
+MODULE_DESCRIPTION("Freescale i.MX8 Audio Clock Mux driver");
+MODULE_LICENSE("GPL");
--
2.34.1
On 05/07/2023 03:50, Shengjiu Wang wrote:
> The Audio Clock Mux (ACM) is a collection of control registers
> and multiplexers that are used to route the audio source clocks
> to the audio peripherals on i.MX8QXP, i.MX8QM, i.MX8DXL
>
> Shengjiu Wang (3):
> dt-bindings: clock: fsl,imx8-acm: Add audio clock mux support
> clk: imx8: Add audio clock mux related clock
> clk: imx: imx8: add audio clock mux driver
>
> changes in v2:
> - update yaml file according to review comments
That's not enough. What changed?
Best regards,
Krzysztof
On 05/07/2023 03:50, Shengjiu Wang wrote:
> Add the clock dt-binding file for audio clock mux. which
> is the IP for i.MX8QM, i.MX8QXP, i.MX8DXL.
>
> Signed-off-by: Shengjiu Wang <[email protected]>
> ---
> .../bindings/clock/fsl,imx8-acm.yaml | 159 ++++++++++++++++++
> 1 file changed, 159 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml b/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
> new file mode 100644
> index 000000000000..b79dd080c008
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/fsl,imx8-acm.yaml
nxp, because that's what you used in compatibles.
I don't see detailed changelog. What changed here?
> @@ -0,0 +1,159 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/fsl,imx8-acm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP i.MX8 Audio Clock Mux
> +
> +maintainers:
> + - Shengjiu Wang <[email protected]>
> +
> +description: |
> + NXP i.MX8 Audio Clock Mux is dedicated clock muxing IP
> + used to control Audio related clock on the SoC.
> +
> +properties:
> + compatible:
> + enum:
> + - nxp,imx8qm-acm
> + - nxp,imx8qxp-acm
> + - nxp,imx8dxl-acm
> +
> + reg:
> + maxItems: 1
> +
> + power-domains:
> + description:
> + List of phandle and PM domain specifier as documented in
> + Documentation/devicetree/bindings/power/power_domain.txt
Drop description, it's redundant. I did not ask to add it.
Anyway, my comment is unanswered. Don't ignore the emails you receive.
Can someone provide rationale for this?
Best regards,
Krzysztof
On 05/07/2023 08:45, Shengjiu Wang wrote:
>> Drop description, it's redundant. I did not ask to add it.
>>
>> Anyway, my comment is unanswered. Don't ignore the emails you receive.
>>
> Can someone provide rationale for this?
>>
>
> The Audio clock mux is binded with all the audio IP and audio clocks in the
> subsystem
> so need to list the power domain of related clocks and IPs. Each clock and
> IPs has
> a power domain, so there are so many power domains.
OK, Reference Manual does not mention them but I see your SCU PD driver
actually registers such power domains.
Best regards,
Krzysztof