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Message-ID: <20230215032405epcms2p433e63daf766faff2635641cc856ab515@epcms2p4>
Date: Wed, 15 Feb 2023 12:24:05 +0900
From: CHANHO PARK <chanho61.park@...sung.com>
To: Sam Protsenko <semen.protsenko@...aro.org>,
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Chanwoo Choi <cw00.choi@...sung.com>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Rob Herring <robh+dt@...nel.org>
CC: David Virag <virag.david003@...il.com>,
ALIM AKHTAR <alim.akhtar@...sung.com>,
Sumit Semwal <sumit.semwal@...aro.org>,
Tomasz Figa <tomasz.figa@...il.com>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
"linux-samsung-soc@...r.kernel.org"
<linux-samsung-soc@...r.kernel.org>,
"linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 4/6] clk: samsung: exynos850: Implement CMU_G3D domain
> -----Original Message-----
> From: Sam Protsenko <semen.protsenko@...aro.org>
> Sent: Saturday, February 11, 2023 3:40 PM
> To: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>; Chanwoo Choi
> <cw00.choi@...sung.com>; Sylwester Nawrocki <s.nawrocki@...sung.com>; Rob
> Herring <robh+dt@...nel.org>
> Cc: David Virag <virag.david003@...il.com>; Chanho Park
> <chanho61.park@...sung.com>; Alim Akhtar <alim.akhtar@...sung.com>; Sumit
> Semwal <sumit.semwal@...aro.org>; Tomasz Figa <tomasz.figa@...il.com>;
> Michael Turquette <mturquette@...libre.com>; Stephen Boyd
> <sboyd@...nel.org>; linux-samsung-soc@...r.kernel.org; linux-
> clk@...r.kernel.org; devicetree@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org
> 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 <semen.protsenko@...aro.org>
> ---
> 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 <chanho61.park@...sung.com>
> +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
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