LinuxLists.cc - [PATCH 0/6] clk: samsung: exynos850: Add missing clocks for PM

2023-02-11 06:40:02

Subject: [PATCH 0/6] clk: samsung: exynos850: Add missing clocks for PM

As a part of preparation for PM enablement in Exynos850 clock driver,
this patch series implements CMU_G3D, and also main gate clocks for AUD
and HSI CMUs. The series brings corresponding changes to bindings, the
driver and SoC dts file.

Sam Protsenko (6):
dt-bindings: clock: exynos850: Add Exynos850 CMU_G3D
dt-bindings: clock: exynos850: Add AUD and HSI main gate clocks
clk: samsung: clk-pll: Implement pll0818x PLL type
clk: samsung: exynos850: Implement CMU_G3D domain
clk: samsung: exynos850: Add AUD and HSI main gate clocks
arm64: dts: exynos: Add CMU_G3D node for Exynos850 SoC

.../clock/samsung,exynos850-clock.yaml | 19 +++
arch/arm64/boot/dts/exynos/exynos850.dtsi | 9 ++
drivers/clk/samsung/clk-exynos850.c | 139 ++++++++++++++++++
drivers/clk/samsung/clk-pll.c | 1 +
drivers/clk/samsung/clk-pll.h | 1 +
include/dt-bindings/clock/exynos850.h | 28 +++-
6 files changed, 194 insertions(+), 3 deletions(-)

--
2.39.1

2023-02-11 06:40:05

by Sam Protsenko

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Subject: [PATCH 1/6] dt-bindings: clock: exynos850: Add Exynos850 CMU_G3D

CMU_G3D generates Gondul GPU and bus clocks for BLK_G3D.
Add clock indices and binding documentation for CMU_G3D.

Signed-off-by: Sam Protsenko <[email protected]>
---
.../clock/samsung,exynos850-clock.yaml | 19 ++++++++++++++++++
include/dt-bindings/clock/exynos850.h | 20 ++++++++++++++++++-
2 files changed, 38 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
index 141cf173f87d..8aa87b8c1b33 100644
--- a/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
+++ b/Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml
@@ -37,6 +37,7 @@ properties:
- samsung,exynos850-cmu-cmgp
- samsung,exynos850-cmu-core
- samsung,exynos850-cmu-dpu
+ - samsung,exynos850-cmu-g3d
- samsung,exynos850-cmu-hsi
- samsung,exynos850-cmu-is
- samsung,exynos850-cmu-mfcmscl
@@ -169,6 +170,24 @@ allOf:
- const: oscclk
- const: dout_dpu

+ - if:
+ properties:
+ compatible:
+ contains:
+ const: samsung,exynos850-cmu-g3d
+
+ then:
+ properties:
+ clocks:
+ items:
+ - description: External reference clock (26 MHz)
+ - description: G3D clock (from CMU_TOP)
+
+ clock-names:
+ items:
+ - const: oscclk
+ - const: dout_g3d_switch
+
- if:
properties:
compatible:
diff --git a/include/dt-bindings/clock/exynos850.h b/include/dt-bindings/clock/exynos850.h
index 88d5289883d3..8bb62e43fd60 100644
--- a/include/dt-bindings/clock/exynos850.h
+++ b/include/dt-bindings/clock/exynos850.h
@@ -85,7 +85,10 @@
#define CLK_DOUT_MFCMSCL_M2M 73
#define CLK_DOUT_MFCMSCL_MCSC 74
#define CLK_DOUT_MFCMSCL_JPEG 75
-#define TOP_NR_CLK 76
+#define CLK_MOUT_G3D_SWITCH 76
+#define CLK_GOUT_G3D_SWITCH 77
+#define CLK_DOUT_G3D_SWITCH 78
+#define TOP_NR_CLK 79

/* CMU_APM */
#define CLK_RCO_I3C_PMIC 1
@@ -195,6 +198,21 @@
#define CLK_GOUT_SYSREG_CMGP_PCLK 15
#define CMGP_NR_CLK 16

+/* CMU_G3D */
+#define CLK_FOUT_G3D_PLL 1
+#define CLK_MOUT_G3D_PLL 2
+#define CLK_MOUT_G3D_SWITCH_USER 3
+#define CLK_MOUT_G3D_BUSD 4
+#define CLK_DOUT_G3D_BUSP 5
+#define CLK_GOUT_G3D_CMU_G3D_PCLK 6
+#define CLK_GOUT_G3D_GPU_CLK 7
+#define CLK_GOUT_G3D_TZPC_PCLK 8
+#define CLK_GOUT_G3D_GRAY2BIN_CLK 9
+#define CLK_GOUT_G3D_BUSD_CLK 10
+#define CLK_GOUT_G3D_BUSP_CLK 11
+#define CLK_GOUT_G3D_SYSREG_PCLK 12
+#define G3D_NR_CLK 13
+
/* CMU_HSI */
#define CLK_MOUT_HSI_BUS_USER 1
#define CLK_MOUT_HSI_MMC_CARD_USER 2
--
2.39.1

2023-02-11 06:40:08

by Sam Protsenko

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Subject: [PATCH 2/6] dt-bindings: clock: exynos850: Add AUD and HSI main gate clocks

Add main gate clocks for controlling AUD and HSI CMUs:
- gout_aud_cmu_aud_pclk
- gout_hsi_cmu_hsi_pclk

While at it, add missing PPMU (Performance Profiling Monitor Unit)
clocks for CMU_HSI.

Signed-off-by: Sam Protsenko <[email protected]>
---
include/dt-bindings/clock/exynos850.h | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/dt-bindings/clock/exynos850.h b/include/dt-bindings/clock/exynos850.h
index 8bb62e43fd60..afacba338c91 100644
--- a/include/dt-bindings/clock/exynos850.h
+++ b/include/dt-bindings/clock/exynos850.h
@@ -178,7 +178,8 @@
#define IOCLK_AUDIOCDCLK5 58
#define IOCLK_AUDIOCDCLK6 59
#define TICK_USB 60
-#define AUD_NR_CLK 61
+#define CLK_GOUT_AUD_CMU_AUD_PCLK 61
+#define AUD_NR_CLK 62

/* CMU_CMGP */
#define CLK_RCO_CMGP 1
@@ -227,7 +228,10 @@
#define CLK_GOUT_MMC_CARD_ACLK 11
#define CLK_GOUT_MMC_CARD_SDCLKIN 12
#define CLK_GOUT_SYSREG_HSI_PCLK 13
-#define HSI_NR_CLK 14
+#define CLK_GOUT_HSI_PPMU_ACLK 14
+#define CLK_GOUT_HSI_PPMU_PCLK 15
+#define CLK_GOUT_HSI_CMU_HSI_PCLK 16
+#define HSI_NR_CLK 17

/* CMU_IS */
#define CLK_MOUT_IS_BUS_USER 1
--
2.39.1

2023-02-11 06:40:10

by Sam Protsenko

[permalink] [raw]

Subject: [PATCH 3/6] clk: samsung: clk-pll: Implement pll0818x PLL type

pll0818x PLL is used in Exynos850 SoC for CMU_G3D PLL. Operation-wise,
pll0818x is the same as pll0822x. The only difference is:
- pl0822x is integer PLL with Middle FVCO (950 to 2400 MHz)
- pl0818x is integer PLL with Low FVCO (600 to 1200 MHz)

Add pll0818x type as an alias to pll0822x.

Signed-off-by: Sam Protsenko <[email protected]>
---
drivers/clk/samsung/clk-pll.c | 1 +
drivers/clk/samsung/clk-pll.h | 1 +
2 files changed, 2 insertions(+)

diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
index 5ceac4c25c1c..74934c6182ce 100644
--- a/drivers/clk/samsung/clk-pll.c
+++ b/drivers/clk/samsung/clk-pll.c
@@ -1314,6 +1314,7 @@ static void __init _samsung_clk_register_pll(struct samsung_clk_provider *ctx,
init.ops = &samsung_pll35xx_clk_ops;
break;
case pll_1417x:
+ case pll_0818x:
case pll_0822x:
pll->enable_offs = PLL0822X_ENABLE_SHIFT;
pll->lock_offs = PLL0822X_LOCK_STAT_SHIFT;
diff --git a/drivers/clk/samsung/clk-pll.h b/drivers/clk/samsung/clk-pll.h
index 5d5a58d40e7e..0725d485c6ee 100644
--- a/drivers/clk/samsung/clk-pll.h
+++ b/drivers/clk/samsung/clk-pll.h
@@ -34,6 +34,7 @@ enum samsung_pll_type {
pll_1451x,
pll_1452x,
pll_1460x,
+ pll_0818x,
pll_0822x,
pll_0831x,
pll_142xx,
--
2.39.1

2023-02-11 06:40:12

by Sam Protsenko

[permalink] [raw]

Subject: [PATCH 4/6] clk: samsung: exynos850: Implement CMU_G3D domain

CMU_G3D clock domain provides clocks for Mali-G52 GPU and bus clocks for
BLK_G3D.

This patch adds next clocks:
- bus clocks in CMU_TOP for CMU_G3D
- all internal CMU_G3D clocks
- leaf clocks for GPU, TZPC (TrustZone Protection Controller) and
SysReg

G3D_CMU_G3D clock was marked as CLK_IGNORE_UNUSED, as system hangs on
boot otherwise.

Signed-off-by: Sam Protsenko <[email protected]>
---
drivers/clk/samsung/clk-exynos850.c | 121 ++++++++++++++++++++++++++++
1 file changed, 121 insertions(+)

diff --git a/drivers/clk/samsung/clk-exynos850.c b/drivers/clk/samsung/clk-exynos850.c
index 541761e96aeb..a24eff42baae 100644
--- a/drivers/clk/samsung/clk-exynos850.c
+++ b/drivers/clk/samsung/clk-exynos850.c
@@ -36,6 +36,7 @@
#define CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD 0x101c
#define CLK_CON_MUX_MUX_CLKCMU_CORE_SSS 0x1020
#define CLK_CON_MUX_MUX_CLKCMU_DPU 0x1034
+#define CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH 0x1038
#define CLK_CON_MUX_MUX_CLKCMU_HSI_BUS 0x103c
#define CLK_CON_MUX_MUX_CLKCMU_HSI_MMC_CARD 0x1040
#define CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD 0x1044
@@ -57,6 +58,7 @@
#define CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD 0x1828
#define CLK_CON_DIV_CLKCMU_CORE_SSS 0x182c
#define CLK_CON_DIV_CLKCMU_DPU 0x1840
+#define CLK_CON_DIV_CLKCMU_G3D_SWITCH 0x1844
#define CLK_CON_DIV_CLKCMU_HSI_BUS 0x1848
#define CLK_CON_DIV_CLKCMU_HSI_MMC_CARD 0x184c
#define CLK_CON_DIV_CLKCMU_HSI_USB20DRD 0x1850
@@ -84,6 +86,7 @@
#define CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD 0x2024
#define CLK_CON_GAT_GATE_CLKCMU_CORE_SSS 0x2028
#define CLK_CON_GAT_GATE_CLKCMU_DPU 0x203c
+#define CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH 0x2040
#define CLK_CON_GAT_GATE_CLKCMU_HSI_BUS 0x2044
#define CLK_CON_GAT_GATE_CLKCMU_HSI_MMC_CARD 0x2048
#define CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD 0x204c
@@ -116,6 +119,7 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD,
CLK_CON_MUX_MUX_CLKCMU_CORE_SSS,
CLK_CON_MUX_MUX_CLKCMU_DPU,
+ CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH,
CLK_CON_MUX_MUX_CLKCMU_HSI_BUS,
CLK_CON_MUX_MUX_CLKCMU_HSI_MMC_CARD,
CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD,
@@ -137,6 +141,7 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD,
CLK_CON_DIV_CLKCMU_CORE_SSS,
CLK_CON_DIV_CLKCMU_DPU,
+ CLK_CON_DIV_CLKCMU_G3D_SWITCH,
CLK_CON_DIV_CLKCMU_HSI_BUS,
CLK_CON_DIV_CLKCMU_HSI_MMC_CARD,
CLK_CON_DIV_CLKCMU_HSI_USB20DRD,
@@ -164,6 +169,7 @@ static const unsigned long top_clk_regs[] __initconst = {
CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD,
CLK_CON_GAT_GATE_CLKCMU_CORE_SSS,
CLK_CON_GAT_GATE_CLKCMU_DPU,
+ CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH,
CLK_CON_GAT_GATE_CLKCMU_HSI_BUS,
CLK_CON_GAT_GATE_CLKCMU_HSI_MMC_CARD,
CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD,
@@ -216,6 +222,9 @@ PNAME(mout_core_mmc_embd_p) = { "oscclk", "dout_shared0_div2",
"oscclk", "oscclk" };
PNAME(mout_core_sss_p) = { "dout_shared0_div3", "dout_shared1_div3",
"dout_shared0_div4", "dout_shared1_div4" };
+/* List of parent clocks for Muxes in CMU_TOP: for CMU_G3D */
+PNAME(mout_g3d_switch_p) = { "dout_shared0_div2", "dout_shared1_div2",
+ "dout_shared0_div3", "dout_shared1_div3" };
/* List of parent clocks for Muxes in CMU_TOP: for CMU_HSI */
PNAME(mout_hsi_bus_p) = { "dout_shared0_div2", "dout_shared1_div2" };
PNAME(mout_hsi_mmc_card_p) = { "oscclk", "dout_shared0_div2",
@@ -283,6 +292,10 @@ static const struct samsung_mux_clock top_mux_clks[] __initconst = {
MUX(CLK_MOUT_DPU, "mout_dpu", mout_dpu_p,
CLK_CON_MUX_MUX_CLKCMU_DPU, 0, 2),

+ /* G3D */
+ MUX(CLK_MOUT_G3D_SWITCH, "mout_g3d_switch", mout_g3d_switch_p,
+ CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH, 0, 2),
+
/* HSI */
MUX(CLK_MOUT_HSI_BUS, "mout_hsi_bus", mout_hsi_bus_p,
CLK_CON_MUX_MUX_CLKCMU_HSI_BUS, 0, 1),
@@ -357,6 +370,10 @@ static const struct samsung_div_clock top_div_clks[] __initconst = {
DIV(CLK_DOUT_DPU, "dout_dpu", "gout_dpu",
CLK_CON_DIV_CLKCMU_DPU, 0, 4),

+ /* G3D */
+ DIV(CLK_DOUT_G3D_SWITCH, "dout_g3d_switch", "gout_g3d_switch",
+ CLK_CON_DIV_CLKCMU_G3D_SWITCH, 0, 3),
+
/* HSI */
DIV(CLK_DOUT_HSI_BUS, "dout_hsi_bus", "gout_hsi_bus",
CLK_CON_DIV_CLKCMU_HSI_BUS, 0, 4),
@@ -417,6 +434,10 @@ static const struct samsung_gate_clock top_gate_clks[] __initconst = {
GATE(CLK_GOUT_DPU, "gout_dpu", "mout_dpu",
CLK_CON_GAT_GATE_CLKCMU_DPU, 21, 0, 0),

+ /* G3D */
+ GATE(CLK_GOUT_G3D_SWITCH, "gout_g3d_switch", "mout_g3d_switch",
+ CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH, 21, 0, 0),
+
/* HSI */
GATE(CLK_GOUT_HSI_BUS, "gout_hsi_bus", "mout_hsi_bus",
CLK_CON_GAT_GATE_CLKCMU_HSI_BUS, 21, 0, 0),
@@ -992,6 +1013,103 @@ static const struct samsung_cmu_info cmgp_cmu_info __initconst = {
.clk_name = "gout_clkcmu_cmgp_bus",
};

+/* ---- CMU_G3D ------------------------------------------------------------- */
+
+/* Register Offset definitions for CMU_G3D (0x11400000) */
+#define PLL_LOCKTIME_PLL_G3D 0x0000
+#define PLL_CON0_PLL_G3D 0x0100
+#define PLL_CON3_PLL_G3D 0x010c
+#define PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER 0x0600
+#define CLK_CON_MUX_MUX_CLK_G3D_BUSD 0x1000
+#define CLK_CON_DIV_DIV_CLK_G3D_BUSP 0x1804
+#define CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK 0x2000
+#define CLK_CON_GAT_CLK_G3D_GPU_CLK 0x2004
+#define CLK_CON_GAT_GOUT_G3D_TZPC_PCLK 0x200c
+#define CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK 0x2010
+#define CLK_CON_GAT_GOUT_G3D_BUSD_CLK 0x2024
+#define CLK_CON_GAT_GOUT_G3D_BUSP_CLK 0x2028
+#define CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK 0x202c
+
+
+static const unsigned long g3d_clk_regs[] __initconst = {
+ PLL_LOCKTIME_PLL_G3D,
+ PLL_CON0_PLL_G3D,
+ PLL_CON3_PLL_G3D,
+ PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER,
+ CLK_CON_MUX_MUX_CLK_G3D_BUSD,
+ CLK_CON_DIV_DIV_CLK_G3D_BUSP,
+ CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK,
+ CLK_CON_GAT_CLK_G3D_GPU_CLK,
+ CLK_CON_GAT_GOUT_G3D_TZPC_PCLK,
+ CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK,
+ CLK_CON_GAT_GOUT_G3D_BUSD_CLK,
+ CLK_CON_GAT_GOUT_G3D_BUSP_CLK,
+ CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK,
+};
+
+/* List of parent clocks for Muxes in CMU_G3D */
+PNAME(mout_g3d_pll_p) = { "oscclk", "fout_g3d_pll" };
+PNAME(mout_g3d_switch_user_p) = { "oscclk", "dout_g3d_switch" };
+PNAME(mout_g3d_busd_p) = { "mout_g3d_pll", "mout_g3d_switch_user" };
+
+/*
+ * Do not provide PLL table to PLL_G3D, as MANUAL_PLL_CTRL bit is not set
+ * for that PLL by default, so set_rate operation would fail.
+ */
+static const struct samsung_pll_clock g3d_pll_clks[] __initconst = {
+ PLL(pll_0818x, CLK_FOUT_G3D_PLL, "fout_g3d_pll", "oscclk",
+ PLL_LOCKTIME_PLL_G3D, PLL_CON3_PLL_G3D, NULL),
+};
+
+static const struct samsung_mux_clock g3d_mux_clks[] __initconst = {
+ MUX(CLK_MOUT_G3D_PLL, "mout_g3d_pll", mout_g3d_pll_p,
+ PLL_CON0_PLL_G3D, 4, 1),
+ MUX(CLK_MOUT_G3D_SWITCH_USER, "mout_g3d_switch_user",
+ mout_g3d_switch_user_p,
+ PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER, 4, 1),
+ MUX(CLK_MOUT_G3D_BUSD, "mout_g3d_busd", mout_g3d_busd_p,
+ CLK_CON_MUX_MUX_CLK_G3D_BUSD, 0, 1),
+};
+
+static const struct samsung_div_clock g3d_div_clks[] __initconst = {
+ DIV(CLK_DOUT_G3D_BUSP, "dout_g3d_busp", "mout_g3d_busd",
+ CLK_CON_DIV_DIV_CLK_G3D_BUSP, 0, 3),
+};
+
+static const struct samsung_gate_clock g3d_gate_clks[] __initconst = {
+ GATE(CLK_GOUT_G3D_CMU_G3D_PCLK, "gout_g3d_cmu_g3d_pclk",
+ "dout_g3d_busp",
+ CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK, 21, CLK_IGNORE_UNUSED, 0),
+ GATE(CLK_GOUT_G3D_GPU_CLK, "gout_g3d_gpu_clk", "mout_g3d_busd",
+ CLK_CON_GAT_CLK_G3D_GPU_CLK, 21, 0, 0),
+ GATE(CLK_GOUT_G3D_TZPC_PCLK, "gout_g3d_tzpc_pclk", "dout_g3d_busp",
+ CLK_CON_GAT_GOUT_G3D_TZPC_PCLK, 21, 0, 0),
+ GATE(CLK_GOUT_G3D_GRAY2BIN_CLK, "gout_g3d_gray2bin_clk",
+ "mout_g3d_busd",
+ CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK, 21, 0, 0),
+ GATE(CLK_GOUT_G3D_BUSD_CLK, "gout_g3d_busd_clk", "mout_g3d_busd",
+ CLK_CON_GAT_GOUT_G3D_BUSD_CLK, 21, 0, 0),
+ GATE(CLK_GOUT_G3D_BUSP_CLK, "gout_g3d_busp_clk", "dout_g3d_busp",
+ CLK_CON_GAT_GOUT_G3D_BUSP_CLK, 21, 0, 0),
+ GATE(CLK_GOUT_G3D_SYSREG_PCLK, "gout_g3d_sysreg_pclk", "dout_g3d_busp",
+ CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK, 21, 0, 0),
+};
+
+static const struct samsung_cmu_info g3d_cmu_info __initconst = {
+ .pll_clks = g3d_pll_clks,
+ .nr_pll_clks = ARRAY_SIZE(g3d_pll_clks),
+ .mux_clks = g3d_mux_clks,
+ .nr_mux_clks = ARRAY_SIZE(g3d_mux_clks),
+ .div_clks = g3d_div_clks,
+ .nr_div_clks = ARRAY_SIZE(g3d_div_clks),
+ .gate_clks = g3d_gate_clks,
+ .nr_gate_clks = ARRAY_SIZE(g3d_gate_clks),
+ .nr_clk_ids = G3D_NR_CLK,
+ .clk_regs = g3d_clk_regs,
+ .nr_clk_regs = ARRAY_SIZE(g3d_clk_regs),
+ .clk_name = "dout_g3d_switch",
+};
+
/* ---- CMU_HSI ------------------------------------------------------------- */

/* Register Offset definitions for CMU_HSI (0x13400000) */
@@ -1700,6 +1818,9 @@ static const struct of_device_id exynos850_cmu_of_match[] = {
}, {
.compatible = "samsung,exynos850-cmu-cmgp",
.data = &cmgp_cmu_info,
+ }, {
+ .compatible = "samsung,exynos850-cmu-g3d",
+ .data = &g3d_cmu_info,
}, {
.compatible = "samsung,exynos850-cmu-hsi",
.data = &hsi_cmu_info,
--
2.39.1

2023-02-11 06:40:14

by Sam Protsenko

[permalink] [raw]

Subject: [PATCH 5/6] clk: samsung: exynos850: Add AUD and HSI main gate clocks

Add main gate clocks for controlling AUD and HSI CMUs:
- gout_aud_cmu_aud_pclk
- gout_hsi_cmu_hsi_pclk

Those clocks were marked as CLK_IGNORE_UNUSED, as system hangs on
boot otherwise.

While at it, add missing PPMU (Performance Profiling Monitor Unit)
clocks for CMU_HSI.

Signed-off-by: Sam Protsenko <[email protected]>
---
drivers/clk/samsung/clk-exynos850.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)

diff --git a/drivers/clk/samsung/clk-exynos850.c b/drivers/clk/samsung/clk-exynos850.c
index a24eff42baae..3d776d57cc8f 100644
--- a/drivers/clk/samsung/clk-exynos850.c
+++ b/drivers/clk/samsung/clk-exynos850.c
@@ -674,6 +674,7 @@ static const struct samsung_cmu_info apm_cmu_info __initconst = {
#define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF4 0x2014
#define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF5 0x2018
#define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF6 0x201c
+#define CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK 0x2020
#define CLK_CON_GAT_GOUT_AUD_ABOX_ACLK 0x2048
#define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_SPDY 0x204c
#define CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_ASB 0x2050
@@ -729,6 +730,7 @@ static const unsigned long aud_clk_regs[] __initconst = {
CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF4,
CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF5,
CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF6,
+ CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK,
CLK_CON_GAT_GOUT_AUD_ABOX_ACLK,
CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_SPDY,
CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_ASB,
@@ -848,6 +850,9 @@ static const struct samsung_div_clock aud_div_clks[] __initconst = {
};

static const struct samsung_gate_clock aud_gate_clks[] __initconst = {
+ GATE(CLK_GOUT_AUD_CMU_AUD_PCLK, "gout_aud_cmu_aud_pclk",
+ "dout_aud_busd",
+ CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK, 21, CLK_IGNORE_UNUSED, 0),
GATE(CLK_GOUT_AUD_CA32_CCLK, "gout_aud_ca32_cclk", "mout_aud_cpu_hch",
CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_CA32, 21, 0, 0),
GATE(CLK_GOUT_AUD_ASB_CCLK, "gout_aud_asb_cclk", "dout_aud_cpu_aclk",
@@ -1117,12 +1122,15 @@ static const struct samsung_cmu_info g3d_cmu_info __initconst = {
#define PLL_CON0_MUX_CLKCMU_HSI_MMC_CARD_USER 0x0610
#define PLL_CON0_MUX_CLKCMU_HSI_USB20DRD_USER 0x0620
#define CLK_CON_MUX_MUX_CLK_HSI_RTC 0x1000
+#define CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK 0x2000
#define CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV 0x2008
#define CLK_CON_GAT_HSI_USB20DRD_TOP_I_REF_CLK_50 0x200c
#define CLK_CON_GAT_HSI_USB20DRD_TOP_I_PHY_REFCLK_26 0x2010
#define CLK_CON_GAT_GOUT_HSI_GPIO_HSI_PCLK 0x2018
#define CLK_CON_GAT_GOUT_HSI_MMC_CARD_I_ACLK 0x2024
#define CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN 0x2028
+#define CLK_CON_GAT_GOUT_HSI_PPMU_ACLK 0x202c
+#define CLK_CON_GAT_GOUT_HSI_PPMU_PCLK 0x2030
#define CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK 0x2038
#define CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_ACLK_PHYCTRL_20 0x203c
#define CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_BUS_CLK_EARLY 0x2040
@@ -1132,12 +1140,15 @@ static const unsigned long hsi_clk_regs[] __initconst = {
PLL_CON0_MUX_CLKCMU_HSI_MMC_CARD_USER,
PLL_CON0_MUX_CLKCMU_HSI_USB20DRD_USER,
CLK_CON_MUX_MUX_CLK_HSI_RTC,
+ CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK,
CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV,
CLK_CON_GAT_HSI_USB20DRD_TOP_I_REF_CLK_50,
CLK_CON_GAT_HSI_USB20DRD_TOP_I_PHY_REFCLK_26,
CLK_CON_GAT_GOUT_HSI_GPIO_HSI_PCLK,
CLK_CON_GAT_GOUT_HSI_MMC_CARD_I_ACLK,
CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN,
+ CLK_CON_GAT_GOUT_HSI_PPMU_ACLK,
+ CLK_CON_GAT_GOUT_HSI_PPMU_PCLK,
CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK,
CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_ACLK_PHYCTRL_20,
CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_BUS_CLK_EARLY,
@@ -1163,6 +1174,9 @@ static const struct samsung_mux_clock hsi_mux_clks[] __initconst = {
};

static const struct samsung_gate_clock hsi_gate_clks[] __initconst = {
+ GATE(CLK_GOUT_HSI_CMU_HSI_PCLK, "gout_hsi_cmu_hsi_pclk",
+ "mout_hsi_bus_user",
+ CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK, 21, CLK_IGNORE_UNUSED, 0),
GATE(CLK_GOUT_USB_RTC_CLK, "gout_usb_rtc", "mout_hsi_rtc",
CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV, 21, 0, 0),
GATE(CLK_GOUT_USB_REF_CLK, "gout_usb_ref", "mout_hsi_usb20drd_user",
@@ -1177,6 +1191,10 @@ static const struct samsung_gate_clock hsi_gate_clks[] __initconst = {
GATE(CLK_GOUT_MMC_CARD_SDCLKIN, "gout_mmc_card_sdclkin",
"mout_hsi_mmc_card_user",
CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN, 21, CLK_SET_RATE_PARENT, 0),
+ GATE(CLK_GOUT_HSI_PPMU_ACLK, "gout_hsi_ppmu_aclk", "mout_hsi_bus_user",
+ CLK_CON_GAT_GOUT_HSI_PPMU_ACLK, 21, 0, 0),
+ GATE(CLK_GOUT_HSI_PPMU_PCLK, "gout_hsi_ppmu_pclk", "mout_hsi_bus_user",
+ CLK_CON_GAT_GOUT_HSI_PPMU_PCLK, 21, 0, 0),
GATE(CLK_GOUT_SYSREG_HSI_PCLK, "gout_sysreg_hsi_pclk",
"mout_hsi_bus_user",
CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK, 21, 0, 0),
--
2.39.1

2023-02-11 06:40:51

by Sam Protsenko

[permalink] [raw]

Subject: [PATCH 6/6] arm64: dts: exynos: Add CMU_G3D node for Exynos850 SoC

Add missing G3D clock domain to Exynos850 SoC device tree.

Signed-off-by: Sam Protsenko <[email protected]>
---
arch/arm64/boot/dts/exynos/exynos850.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/exynos850.dtsi b/arch/arm64/boot/dts/exynos/exynos850.dtsi
index a38fe5129937..d67e98120313 100644
--- a/arch/arm64/boot/dts/exynos/exynos850.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos850.dtsi
@@ -245,6 +245,15 @@ cmu_peri: clock-controller@10030000 {
"dout_peri_uart", "dout_peri_ip";
};

+ cmu_g3d: clock-controller@11400000 {
+ compatible = "samsung,exynos850-cmu-g3d";
+ reg = <0x11400000 0x8000>;
+ #clock-cells = <1>;
+
+ clocks = <&oscclk>, <&cmu_top CLK_DOUT_G3D_SWITCH>;
+ clock-names = "oscclk", "dout_g3d_switch";
+ };
+
cmu_apm: clock-controller@11800000 {
compatible = "samsung,exynos850-cmu-apm";
reg = <0x11800000 0x8000>;
--
2.39.1

2023-02-14 23:57:27

by Rob Herring (Arm)

[permalink] [raw]

Subject: Re: [PATCH 1/6] dt-bindings: clock: exynos850: Add Exynos850 CMU_G3D

On Sat, 11 Feb 2023 00:40:01 -0600, Sam Protsenko wrote:
> CMU_G3D generates Gondul GPU and bus clocks for BLK_G3D.
> Add clock indices and binding documentation for CMU_G3D.
>
> Signed-off-by: Sam Protsenko <[email protected]>
> ---
> .../clock/samsung,exynos850-clock.yaml | 19 ++++++++++++++++++
> include/dt-bindings/clock/exynos850.h | 20 ++++++++++++++++++-
> 2 files changed, 38 insertions(+), 1 deletion(-)
>

Acked-by: Rob Herring <[email protected]>

2023-02-14 23:58:32

by Rob Herring (Arm)

[permalink] [raw]

Subject: Re: [PATCH 2/6] dt-bindings: clock: exynos850: Add AUD and HSI main gate clocks

On Sat, 11 Feb 2023 00:40:02 -0600, Sam Protsenko wrote:
> Add main gate clocks for controlling AUD and HSI CMUs:
> - gout_aud_cmu_aud_pclk
> - gout_hsi_cmu_hsi_pclk
>
> While at it, add missing PPMU (Performance Profiling Monitor Unit)
> clocks for CMU_HSI.
>
> Signed-off-by: Sam Protsenko <[email protected]>
> ---
> include/dt-bindings/clock/exynos850.h | 8 ++++++--
> 1 file changed, 6 insertions(+), 2 deletions(-)
>

Acked-by: Rob Herring <[email protected]>

2023-02-15 02:38:21

by Chanho Park

[permalink] [raw]

Subject: RE: [PATCH 3/6] clk: samsung: clk-pll: Implement pll0818x PLL type

> Subject: [PATCH 3/6] clk: samsung: clk-pll: Implement pll0818x PLL type
>
> pll0818x PLL is used in Exynos850 SoC for CMU_G3D PLL. Operation-wise,
> pll0818x is the same as pll0822x. The only difference is:
> - pl0822x is integer PLL with Middle FVCO (950 to 2400 MHz)
> - pl0818x is integer PLL with Low FVCO (600 to 1200 MHz)
>
> Add pll0818x type as an alias to pll0822x.
>
> Signed-off-by: Sam Protsenko <[email protected]>

Reviewed-by: Chanho Park <[email protected]>

> ---
> drivers/clk/samsung/clk-pll.c | 1 +
> drivers/clk/samsung/clk-pll.h | 1 +
> 2 files changed, 2 insertions(+)
>
> diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c
> index 5ceac4c25c1c..74934c6182ce 100644
> --- a/drivers/clk/samsung/clk-pll.c
> +++ b/drivers/clk/samsung/clk-pll.c
> @@ -1314,6 +1314,7 @@ static void __init _samsung_clk_register_pll(struct
> samsung_clk_provider *ctx,
> init.ops = &samsung_pll35xx_clk_ops;
> break;
> case pll_1417x:
> + case pll_0818x:
> case pll_0822x:
> pll->enable_offs = PLL0822X_ENABLE_SHIFT;
> pll->lock_offs = PLL0822X_LOCK_STAT_SHIFT; diff --git
> a/drivers/clk/samsung/clk-pll.h b/drivers/clk/samsung/clk-pll.h index
> 5d5a58d40e7e..0725d485c6ee 100644
> --- a/drivers/clk/samsung/clk-pll.h
> +++ b/drivers/clk/samsung/clk-pll.h
> @@ -34,6 +34,7 @@ enum samsung_pll_type {
> pll_1451x,
> pll_1452x,
> pll_1460x,
> + pll_0818x,
> pll_0822x,
> pll_0831x,
> pll_142xx,
> --
> 2.39.1

2023-02-15 02:41:05

by Chanho Park

[permalink] [raw]

Subject: RE: [PATCH 5/6] clk: samsung: exynos850: Add AUD and HSI main gate clocks

2023-02-15 03:24:18

by Chanho Park

[permalink] [raw]

Subject: RE: [PATCH 4/6] clk: samsung: exynos850: Implement CMU_G3D domain

> -----Original Message-----
> From: Sam Protsenko <[email protected]>
> Sent: Saturday, February 11, 2023 3:40 PM
> To: Krzysztof Kozlowski <[email protected]>; Chanwoo Choi
> <[email protected]>; Sylwester Nawrocki <[email protected]>; Rob
> Herring <[email protected]>
> Cc: David Virag <[email protected]>; Chanho Park
> <[email protected]>; Alim Akhtar <[email protected]>; Sumit
> Semwal <[email protected]>; Tomasz Figa <[email protected]>;
> Michael Turquette <[email protected]>; Stephen Boyd
> <[email protected]>; [email protected]; linux-
> [email protected]; [email protected]; linux-arm-
> [email protected]; [email protected]
> Subject: [PATCH 4/6] clk: samsung: exynos850: Implement CMU_G3D domain
>
> CMU_G3D clock domain provides clocks for Mali-G52 GPU and bus clocks for
> BLK_G3D.
>
> This patch adds next clocks:
> - bus clocks in CMU_TOP for CMU_G3D
> - all internal CMU_G3D clocks
> - leaf clocks for GPU, TZPC (TrustZone Protection Controller) and
> SysReg
>
> G3D_CMU_G3D clock was marked as CLK_IGNORE_UNUSED, as system hangs on boot
> otherwise.
>
> Signed-off-by: Sam Protsenko <[email protected]>
> ---
> drivers/clk/samsung/clk-exynos850.c | 121 ++++++++++++++++++++++++++++
> 1 file changed, 121 insertions(+)
>
> diff --git a/drivers/clk/samsung/clk-exynos850.c
> b/drivers/clk/samsung/clk-exynos850.c
> index 541761e96aeb..a24eff42baae 100644
> --- a/drivers/clk/samsung/clk-exynos850.c
> +++ b/drivers/clk/samsung/clk-exynos850.c
> @@ -36,6 +36,7 @@
> #define CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD 0x101c
> #define CLK_CON_MUX_MUX_CLKCMU_CORE_SSS 0x1020
> #define CLK_CON_MUX_MUX_CLKCMU_DPU 0x1034
> +#define CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH 0x1038
> #define CLK_CON_MUX_MUX_CLKCMU_HSI_BUS 0x103c
> #define CLK_CON_MUX_MUX_CLKCMU_HSI_MMC_CARD 0x1040
> #define CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD 0x1044
> @@ -57,6 +58,7 @@
> #define CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD 0x1828
> #define CLK_CON_DIV_CLKCMU_CORE_SSS 0x182c
> #define CLK_CON_DIV_CLKCMU_DPU 0x1840
> +#define CLK_CON_DIV_CLKCMU_G3D_SWITCH 0x1844
> #define CLK_CON_DIV_CLKCMU_HSI_BUS 0x1848
> #define CLK_CON_DIV_CLKCMU_HSI_MMC_CARD 0x184c
> #define CLK_CON_DIV_CLKCMU_HSI_USB20DRD 0x1850
> @@ -84,6 +86,7 @@
> #define CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD 0x2024
> #define CLK_CON_GAT_GATE_CLKCMU_CORE_SSS 0x2028
> #define CLK_CON_GAT_GATE_CLKCMU_DPU 0x203c
> +#define CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH 0x2040
> #define CLK_CON_GAT_GATE_CLKCMU_HSI_BUS 0x2044
> #define CLK_CON_GAT_GATE_CLKCMU_HSI_MMC_CARD 0x2048
> #define CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD 0x204c
> @@ -116,6 +119,7 @@ static const unsigned long top_clk_regs[] __initconst
> = {
> CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD,
> CLK_CON_MUX_MUX_CLKCMU_CORE_SSS,
> CLK_CON_MUX_MUX_CLKCMU_DPU,
> + CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH,
> CLK_CON_MUX_MUX_CLKCMU_HSI_BUS,
> CLK_CON_MUX_MUX_CLKCMU_HSI_MMC_CARD,
> CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD,
> @@ -137,6 +141,7 @@ static const unsigned long top_clk_regs[] __initconst
> = {
> CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD,
> CLK_CON_DIV_CLKCMU_CORE_SSS,
> CLK_CON_DIV_CLKCMU_DPU,
> + CLK_CON_DIV_CLKCMU_G3D_SWITCH,
> CLK_CON_DIV_CLKCMU_HSI_BUS,
> CLK_CON_DIV_CLKCMU_HSI_MMC_CARD,
> CLK_CON_DIV_CLKCMU_HSI_USB20DRD,
> @@ -164,6 +169,7 @@ static const unsigned long top_clk_regs[] __initconst
> = {
> CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD,
> CLK_CON_GAT_GATE_CLKCMU_CORE_SSS,
> CLK_CON_GAT_GATE_CLKCMU_DPU,
> + CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH,
> CLK_CON_GAT_GATE_CLKCMU_HSI_BUS,
> CLK_CON_GAT_GATE_CLKCMU_HSI_MMC_CARD,
> CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD,
> @@ -216,6 +222,9 @@ PNAME(mout_core_mmc_embd_p) = { "oscclk",
> "dout_shared0_div2",
> "oscclk", "oscclk" };
> PNAME(mout_core_sss_p) = { "dout_shared0_div3",
> "dout_shared1_div3",
> "dout_shared0_div4", "dout_shared1_div4" };
> +/* List of parent clocks for Muxes in CMU_TOP: for CMU_G3D */
> +PNAME(mout_g3d_switch_p) = { "dout_shared0_div2", "dout_shared1_div2",
> + "dout_shared0_div3", "dout_shared1_div3" };
> /* List of parent clocks for Muxes in CMU_TOP: for CMU_HSI */
> PNAME(mout_hsi_bus_p) = { "dout_shared0_div2",
> "dout_shared1_div2" };
> PNAME(mout_hsi_mmc_card_p) = { "oscclk", "dout_shared0_div2",
> @@ -283,6 +292,10 @@ static const struct samsung_mux_clock top_mux_clks[]
> __initconst = {
> MUX(CLK_MOUT_DPU, "mout_dpu", mout_dpu_p,
> CLK_CON_MUX_MUX_CLKCMU_DPU, 0, 2),
>
> + /* G3D */
> + MUX(CLK_MOUT_G3D_SWITCH, "mout_g3d_switch", mout_g3d_switch_p,
> + CLK_CON_MUX_MUX_CLKCMU_G3D_SWITCH, 0, 2),
> +
> /* HSI */
> MUX(CLK_MOUT_HSI_BUS, "mout_hsi_bus", mout_hsi_bus_p,
> CLK_CON_MUX_MUX_CLKCMU_HSI_BUS, 0, 1), @@ -357,6 +370,10 @@
> static const struct samsung_div_clock top_div_clks[] __initconst = {
> DIV(CLK_DOUT_DPU, "dout_dpu", "gout_dpu",
> CLK_CON_DIV_CLKCMU_DPU, 0, 4),
>
> + /* G3D */
> + DIV(CLK_DOUT_G3D_SWITCH, "dout_g3d_switch", "gout_g3d_switch",
> + CLK_CON_DIV_CLKCMU_G3D_SWITCH, 0, 3),
> +
> /* HSI */
> DIV(CLK_DOUT_HSI_BUS, "dout_hsi_bus", "gout_hsi_bus",
> CLK_CON_DIV_CLKCMU_HSI_BUS, 0, 4), @@ -417,6 +434,10 @@ static
> const struct samsung_gate_clock top_gate_clks[] __initconst = {
> GATE(CLK_GOUT_DPU, "gout_dpu", "mout_dpu",
> CLK_CON_GAT_GATE_CLKCMU_DPU, 21, 0, 0),
>
> + /* G3D */
> + GATE(CLK_GOUT_G3D_SWITCH, "gout_g3d_switch", "mout_g3d_switch",
> + CLK_CON_GAT_GATE_CLKCMU_G3D_SWITCH, 21, 0, 0),
> +
> /* HSI */
> GATE(CLK_GOUT_HSI_BUS, "gout_hsi_bus", "mout_hsi_bus",
> CLK_CON_GAT_GATE_CLKCMU_HSI_BUS, 21, 0, 0), @@ -992,6 +1013,103
> @@ static const struct samsung_cmu_info cmgp_cmu_info __initconst = {
> .clk_name = "gout_clkcmu_cmgp_bus",
> };
>
> +/* ---- CMU_G3D
> +------------------------------------------------------------- */
> +
> +/* Register Offset definitions for CMU_G3D (0x11400000) */
> +#define PLL_LOCKTIME_PLL_G3D 0x0000
> +#define PLL_CON0_PLL_G3D 0x0100
> +#define PLL_CON3_PLL_G3D 0x010c
> +#define PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER 0x0600
> +#define CLK_CON_MUX_MUX_CLK_G3D_BUSD 0x1000
> +#define CLK_CON_DIV_DIV_CLK_G3D_BUSP 0x1804
> +#define CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK 0x2000
> +#define CLK_CON_GAT_CLK_G3D_GPU_CLK 0x2004
> +#define CLK_CON_GAT_GOUT_G3D_TZPC_PCLK 0x200c
> +#define CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK 0x2010
> +#define CLK_CON_GAT_GOUT_G3D_BUSD_CLK 0x2024
> +#define CLK_CON_GAT_GOUT_G3D_BUSP_CLK 0x2028
> +#define CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK 0x202c
> +
> +

Nit: double empty lines.
Otherwise, looks good to me :)

Reviewed-by: Chanho Park <[email protected]>

> +static const unsigned long g3d_clk_regs[] __initconst = {
> + PLL_LOCKTIME_PLL_G3D,
> + PLL_CON0_PLL_G3D,
> + PLL_CON3_PLL_G3D,
> + PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER,
> + CLK_CON_MUX_MUX_CLK_G3D_BUSD,
> + CLK_CON_DIV_DIV_CLK_G3D_BUSP,
> + CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK,
> + CLK_CON_GAT_CLK_G3D_GPU_CLK,
> + CLK_CON_GAT_GOUT_G3D_TZPC_PCLK,
> + CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK,
> + CLK_CON_GAT_GOUT_G3D_BUSD_CLK,
> + CLK_CON_GAT_GOUT_G3D_BUSP_CLK,
> + CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK,
> +};
> +
> +/* List of parent clocks for Muxes in CMU_G3D */
> +PNAME(mout_g3d_pll_p) = { "oscclk", "fout_g3d_pll" };
> +PNAME(mout_g3d_switch_user_p) = { "oscclk", "dout_g3d_switch" };
> +PNAME(mout_g3d_busd_p) = { "mout_g3d_pll",
> "mout_g3d_switch_user" };
> +
> +/*
> + * Do not provide PLL table to PLL_G3D, as MANUAL_PLL_CTRL bit is not
> +set
> + * for that PLL by default, so set_rate operation would fail.
> + */
> +static const struct samsung_pll_clock g3d_pll_clks[] __initconst = {
> + PLL(pll_0818x, CLK_FOUT_G3D_PLL, "fout_g3d_pll", "oscclk",
> + PLL_LOCKTIME_PLL_G3D, PLL_CON3_PLL_G3D, NULL), };
> +
> +static const struct samsung_mux_clock g3d_mux_clks[] __initconst = {
> + MUX(CLK_MOUT_G3D_PLL, "mout_g3d_pll", mout_g3d_pll_p,
> + PLL_CON0_PLL_G3D, 4, 1),
> + MUX(CLK_MOUT_G3D_SWITCH_USER, "mout_g3d_switch_user",
> + mout_g3d_switch_user_p,
> + PLL_CON0_MUX_CLKCMU_G3D_SWITCH_USER, 4, 1),
> + MUX(CLK_MOUT_G3D_BUSD, "mout_g3d_busd", mout_g3d_busd_p,
> + CLK_CON_MUX_MUX_CLK_G3D_BUSD, 0, 1), };
> +
> +static const struct samsung_div_clock g3d_div_clks[] __initconst = {
> + DIV(CLK_DOUT_G3D_BUSP, "dout_g3d_busp", "mout_g3d_busd",
> + CLK_CON_DIV_DIV_CLK_G3D_BUSP, 0, 3), };
> +
> +static const struct samsung_gate_clock g3d_gate_clks[] __initconst = {
> + GATE(CLK_GOUT_G3D_CMU_G3D_PCLK, "gout_g3d_cmu_g3d_pclk",
> + "dout_g3d_busp",
> + CLK_CON_GAT_CLK_G3D_CMU_G3D_PCLK, 21, CLK_IGNORE_UNUSED, 0),
> + GATE(CLK_GOUT_G3D_GPU_CLK, "gout_g3d_gpu_clk", "mout_g3d_busd",
> + CLK_CON_GAT_CLK_G3D_GPU_CLK, 21, 0, 0),
> + GATE(CLK_GOUT_G3D_TZPC_PCLK, "gout_g3d_tzpc_pclk", "dout_g3d_busp",
> + CLK_CON_GAT_GOUT_G3D_TZPC_PCLK, 21, 0, 0),
> + GATE(CLK_GOUT_G3D_GRAY2BIN_CLK, "gout_g3d_gray2bin_clk",
> + "mout_g3d_busd",
> + CLK_CON_GAT_GOUT_G3D_GRAY2BIN_CLK, 21, 0, 0),
> + GATE(CLK_GOUT_G3D_BUSD_CLK, "gout_g3d_busd_clk", "mout_g3d_busd",
> + CLK_CON_GAT_GOUT_G3D_BUSD_CLK, 21, 0, 0),
> + GATE(CLK_GOUT_G3D_BUSP_CLK, "gout_g3d_busp_clk", "dout_g3d_busp",
> + CLK_CON_GAT_GOUT_G3D_BUSP_CLK, 21, 0, 0),
> + GATE(CLK_GOUT_G3D_SYSREG_PCLK, "gout_g3d_sysreg_pclk",
> "dout_g3d_busp",
> + CLK_CON_GAT_GOUT_G3D_SYSREG_PCLK, 21, 0, 0), };
> +
> +static const struct samsung_cmu_info g3d_cmu_info __initconst = {
> + .pll_clks = g3d_pll_clks,
> + .nr_pll_clks = ARRAY_SIZE(g3d_pll_clks),
> + .mux_clks = g3d_mux_clks,
> + .nr_mux_clks = ARRAY_SIZE(g3d_mux_clks),
> + .div_clks = g3d_div_clks,
> + .nr_div_clks = ARRAY_SIZE(g3d_div_clks),
> + .gate_clks = g3d_gate_clks,
> + .nr_gate_clks = ARRAY_SIZE(g3d_gate_clks),
> + .nr_clk_ids = G3D_NR_CLK,
> + .clk_regs = g3d_clk_regs,
> + .nr_clk_regs = ARRAY_SIZE(g3d_clk_regs),
> + .clk_name = "dout_g3d_switch",
> +};
> +
> /* ---- CMU_HSI ---------------------------------------------------------
> ---- */
>
> /* Register Offset definitions for CMU_HSI (0x13400000) */ @@ -1700,6
> +1818,9 @@ static const struct of_device_id exynos850_cmu_of_match[] = {
> }, {
> .compatible = "samsung,exynos850-cmu-cmgp",
> .data = &cmgp_cmu_info,
> + }, {
> + .compatible = "samsung,exynos850-cmu-g3d",
> + .data = &g3d_cmu_info,
> }, {
> .compatible = "samsung,exynos850-cmu-hsi",
> .data = &hsi_cmu_info,
> --
> 2.39.1

2023-02-15 03:53:05

by Chanho Park

[permalink] [raw]

Subject: RE: [PATCH 6/6] arm64: dts: exynos: Add CMU_G3D node for Exynos850 SoC

2023-02-23 02:27:21

by Sam Protsenko

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Subject: Re: [PATCH 5/6] clk: samsung: exynos850: Add AUD and HSI main gate clocks

On Tue, 14 Feb 2023 at 20:41, CHANHO PARK <[email protected]> wrote:
>
> > -----Original Message-----
> > From: Sam Protsenko <[email protected]>
> > Sent: Saturday, February 11, 2023 3:40 PM
> > To: Krzysztof Kozlowski <[email protected]>; Chanwoo Choi
> > <[email protected]>; Sylwester Nawrocki <[email protected]>; Rob
> > Herring <[email protected]>
> > Cc: David Virag <[email protected]>; Chanho Park
> > <[email protected]>; Alim Akhtar <[email protected]>; Sumit
> > Semwal <[email protected]>; Tomasz Figa <[email protected]>;
> > Michael Turquette <[email protected]>; Stephen Boyd
> > <[email protected]>; [email protected]; linux-
> > [email protected]; [email protected]; linux-arm-
> > [email protected]; [email protected]
> > Subject: [PATCH 5/6] clk: samsung: exynos850: Add AUD and HSI main gate
> > clocks
> >
> > Add main gate clocks for controlling AUD and HSI CMUs:
> > - gout_aud_cmu_aud_pclk
> > - gout_hsi_cmu_hsi_pclk
> >
> > Those clocks were marked as CLK_IGNORE_UNUSED, as system hangs on boot
> > otherwise.
> >
> > While at it, add missing PPMU (Performance Profiling Monitor Unit) clocks
> > for CMU_HSI.
> >
> > Signed-off-by: Sam Protsenko <[email protected]>
> > ---
> > drivers/clk/samsung/clk-exynos850.c | 18 ++++++++++++++++++
> > 1 file changed, 18 insertions(+)
> >
> > diff --git a/drivers/clk/samsung/clk-exynos850.c
> > b/drivers/clk/samsung/clk-exynos850.c
> > index a24eff42baae..3d776d57cc8f 100644
> > --- a/drivers/clk/samsung/clk-exynos850.c
> > +++ b/drivers/clk/samsung/clk-exynos850.c
> > @@ -674,6 +674,7 @@ static const struct samsung_cmu_info apm_cmu_info
> > __initconst = {
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF4 0x2014
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF5 0x2018
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF6 0x201c
> > +#define CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK 0x2020
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_ACLK 0x2048
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_SPDY 0x204c
> > #define CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_ASB 0x2050
> > @@ -729,6 +730,7 @@ static const unsigned long aud_clk_regs[] __initconst
> > = {
> > CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF4,
> > CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF5,
> > CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_UAIF6,
> > + CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK,
> > CLK_CON_GAT_GOUT_AUD_ABOX_ACLK,
> > CLK_CON_GAT_GOUT_AUD_ABOX_BCLK_SPDY,
> > CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_ASB,
> > @@ -848,6 +850,9 @@ static const struct samsung_div_clock aud_div_clks[]
> > __initconst = { };
> >
> > static const struct samsung_gate_clock aud_gate_clks[] __initconst = {
> > + GATE(CLK_GOUT_AUD_CMU_AUD_PCLK, "gout_aud_cmu_aud_pclk",
> > + "dout_aud_busd",
> > + CLK_CON_GAT_CLK_AUD_CMU_AUD_PCLK, 21, CLK_IGNORE_UNUSED, 0),
> > GATE(CLK_GOUT_AUD_CA32_CCLK, "gout_aud_ca32_cclk",
> > "mout_aud_cpu_hch",
> > CLK_CON_GAT_GOUT_AUD_ABOX_CCLK_CA32, 21, 0, 0),
> > GATE(CLK_GOUT_AUD_ASB_CCLK, "gout_aud_asb_cclk",
> > "dout_aud_cpu_aclk", @@ -1117,12 +1122,15 @@ static const struct
> > samsung_cmu_info g3d_cmu_info __initconst = {
> > #define PLL_CON0_MUX_CLKCMU_HSI_MMC_CARD_USER 0x0610
> > #define PLL_CON0_MUX_CLKCMU_HSI_USB20DRD_USER 0x0620
> > #define CLK_CON_MUX_MUX_CLK_HSI_RTC 0x1000
> > +#define CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK 0x2000
> > #define CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV 0x2008
> > #define CLK_CON_GAT_HSI_USB20DRD_TOP_I_REF_CLK_50 0x200c
> > #define CLK_CON_GAT_HSI_USB20DRD_TOP_I_PHY_REFCLK_26 0x2010
> > #define CLK_CON_GAT_GOUT_HSI_GPIO_HSI_PCLK 0x2018
> > #define CLK_CON_GAT_GOUT_HSI_MMC_CARD_I_ACLK 0x2024
> > #define CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN 0x2028
> > +#define CLK_CON_GAT_GOUT_HSI_PPMU_ACLK 0x202c
> > +#define CLK_CON_GAT_GOUT_HSI_PPMU_PCLK 0x2030
> > #define CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK 0x2038
> > #define CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_ACLK_PHYCTRL_20 0x203c
> > #define CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_BUS_CLK_EARLY 0x2040
> > @@ -1132,12 +1140,15 @@ static const unsigned long hsi_clk_regs[]
> > __initconst = {
> > PLL_CON0_MUX_CLKCMU_HSI_MMC_CARD_USER,
> > PLL_CON0_MUX_CLKCMU_HSI_USB20DRD_USER,
> > CLK_CON_MUX_MUX_CLK_HSI_RTC,
> > + CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK,
> > CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV,
> > CLK_CON_GAT_HSI_USB20DRD_TOP_I_REF_CLK_50,
> > CLK_CON_GAT_HSI_USB20DRD_TOP_I_PHY_REFCLK_26,
> > CLK_CON_GAT_GOUT_HSI_GPIO_HSI_PCLK,
> > CLK_CON_GAT_GOUT_HSI_MMC_CARD_I_ACLK,
> > CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN,
> > + CLK_CON_GAT_GOUT_HSI_PPMU_ACLK,
> > + CLK_CON_GAT_GOUT_HSI_PPMU_PCLK,
> > CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK,
> > CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_ACLK_PHYCTRL_20,
> > CLK_CON_GAT_GOUT_HSI_USB20DRD_TOP_BUS_CLK_EARLY,
> > @@ -1163,6 +1174,9 @@ static const struct samsung_mux_clock hsi_mux_clks[]
> > __initconst = { };
> >
> > static const struct samsung_gate_clock hsi_gate_clks[] __initconst = {
> > + GATE(CLK_GOUT_HSI_CMU_HSI_PCLK, "gout_hsi_cmu_hsi_pclk",
> > + "mout_hsi_bus_user",
> > + CLK_CON_GAT_CLK_HSI_CMU_HSI_PCLK, 21, CLK_IGNORE_UNUSED, 0),
>
> You'll need to put /* TODO: */ tag or use CLK_IS_CRITICAL if you make sure it is the critical clock.
>

Thanks for the review! I'll add the comment for now, as it's done in
other CMUs for similar clocks. As for making it critical: maybe I'll
do it as a part of PM enablement, which I'm working on right now (if
it's needed). But in that case I'd like to provide a separate patch
for making all similar clocks (XXX_CMU_XXX) critical, so not in this
patch.

Will send v2 soon.

> > GATE(CLK_GOUT_USB_RTC_CLK, "gout_usb_rtc", "mout_hsi_rtc",
> > CLK_CON_GAT_HSI_USB20DRD_TOP_I_RTC_CLK__ALV, 21, 0, 0),
> > GATE(CLK_GOUT_USB_REF_CLK, "gout_usb_ref", "mout_hsi_usb20drd_user",
> > @@ -1177,6 +1191,10 @@ static const struct samsung_gate_clock
> > hsi_gate_clks[] __initconst = {
> > GATE(CLK_GOUT_MMC_CARD_SDCLKIN, "gout_mmc_card_sdclkin",
> > "mout_hsi_mmc_card_user",
> > CLK_CON_GAT_GOUT_HSI_MMC_CARD_SDCLKIN, 21, CLK_SET_RATE_PARENT,
> > 0),
> > + GATE(CLK_GOUT_HSI_PPMU_ACLK, "gout_hsi_ppmu_aclk",
> > "mout_hsi_bus_user",
> > + CLK_CON_GAT_GOUT_HSI_PPMU_ACLK, 21, 0, 0),
> > + GATE(CLK_GOUT_HSI_PPMU_PCLK, "gout_hsi_ppmu_pclk",
> > "mout_hsi_bus_user",
> > + CLK_CON_GAT_GOUT_HSI_PPMU_PCLK, 21, 0, 0),
> > GATE(CLK_GOUT_SYSREG_HSI_PCLK, "gout_sysreg_hsi_pclk",
> > "mout_hsi_bus_user",
> > CLK_CON_GAT_GOUT_HSI_SYSREG_HSI_PCLK, 21, 0, 0),
> > --
> > 2.39.1