[PATCH v2 4/6] clk: samsung: exynos850: Implement CMU_G3D domain

From: Sam Protsenko
Date: Wed Feb 22 2023 - 23:23:21 EST

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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.

Reviewed-by: Chanho Park <chanho61.park@xxxxxxxxxxx>
Signed-off-by: Sam Protsenko <semen.protsenko@xxxxxxxxxx>
---
Changes in v2:
- Rebased on top of most recent soc/for-next tree
- Added Chanho Park Reviwed-by tag
- Removed double empty line (style fix)

drivers/clk/samsung/clk-exynos850.c | 120 ++++++++++++++++++++++++++++
1 file changed, 120 insertions(+)

diff --git a/drivers/clk/samsung/clk-exynos850.c b/drivers/clk/samsung/clk-exynos850.c
index 541761e96aeb..601fe05e8555 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 +1013,102 @@ 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 +1817,9 @@ 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

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