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author | Sam Protsenko <semen.protsenko@linaro.org> | 2021-11-22 01:27:37 +0200 |
---|---|---|
committer | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2021-11-22 10:13:18 +0100 |
commit | 579839a918d71e955603e0b9ba5cc38efc740f05 (patch) | |
tree | 8d46a517f70c2a6ef9f3ca1eceed833e3010a180 /drivers/clk | |
parent | 16e0c2474fcfaa8a6c61abfaa981994c4564a628 (diff) | |
download | linux-stable-579839a918d71e955603e0b9ba5cc38efc740f05.tar.gz linux-stable-579839a918d71e955603e0b9ba5cc38efc740f05.tar.bz2 linux-stable-579839a918d71e955603e0b9ba5cc38efc740f05.zip |
clk: samsung: exynos850: Implement CMU_APM domain
CMU_APM clock domain provides clocks for APM IP-core (Active Power
Management). According to Exynos850 TRM, CMU_APM generates I3C, Mailbox,
Speedy, Timer, WDT, RTC and PMU clocks for BLK_ALIVE.
This patch adds next clocks:
- bus clocks in CMU_TOP needed for CMU_APM
- all internal CMU_APM clocks
- leaf clocks for I3C, Speedy and RTC IP-cores
- bus clocks for CMU_CMGP and CMU_CHUB
CMU_APM doesn't belong to Power Domains, but platform driver is used for
its registration to keep its bus clock always running. Otherwise rtc-s3c
driver disables that clock and system freezes.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20211121232741.6967-3-semen.protsenko@linaro.org
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/samsung/clk-exynos850.c | 142 |
1 files changed, 141 insertions, 1 deletions
diff --git a/drivers/clk/samsung/clk-exynos850.c b/drivers/clk/samsung/clk-exynos850.c index 2294989e244c..95e373d17b42 100644 --- a/drivers/clk/samsung/clk-exynos850.c +++ b/drivers/clk/samsung/clk-exynos850.c @@ -72,6 +72,7 @@ static void __init exynos850_init_clocks(struct device_node *np, #define PLL_CON3_PLL_SHARED0 0x014c #define PLL_CON0_PLL_SHARED1 0x0180 #define PLL_CON3_PLL_SHARED1 0x018c +#define CLK_CON_MUX_MUX_CLKCMU_APM_BUS 0x1000 #define CLK_CON_MUX_MUX_CLKCMU_CORE_BUS 0x1014 #define CLK_CON_MUX_MUX_CLKCMU_CORE_CCI 0x1018 #define CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD 0x101c @@ -83,6 +84,7 @@ static void __init exynos850_init_clocks(struct device_node *np, #define CLK_CON_MUX_MUX_CLKCMU_PERI_BUS 0x1070 #define CLK_CON_MUX_MUX_CLKCMU_PERI_IP 0x1074 #define CLK_CON_MUX_MUX_CLKCMU_PERI_UART 0x1078 +#define CLK_CON_DIV_CLKCMU_APM_BUS 0x180c #define CLK_CON_DIV_CLKCMU_CORE_BUS 0x1820 #define CLK_CON_DIV_CLKCMU_CORE_CCI 0x1824 #define CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD 0x1828 @@ -100,6 +102,7 @@ static void __init exynos850_init_clocks(struct device_node *np, #define CLK_CON_DIV_PLL_SHARED1_DIV2 0x1898 #define CLK_CON_DIV_PLL_SHARED1_DIV3 0x189c #define CLK_CON_DIV_PLL_SHARED1_DIV4 0x18a0 +#define CLK_CON_GAT_GATE_CLKCMU_APM_BUS 0x2008 #define CLK_CON_GAT_GATE_CLKCMU_CORE_BUS 0x201c #define CLK_CON_GAT_GATE_CLKCMU_CORE_CCI 0x2020 #define CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD 0x2024 @@ -122,6 +125,7 @@ static const unsigned long top_clk_regs[] __initconst = { PLL_CON3_PLL_SHARED0, PLL_CON0_PLL_SHARED1, PLL_CON3_PLL_SHARED1, + CLK_CON_MUX_MUX_CLKCMU_APM_BUS, CLK_CON_MUX_MUX_CLKCMU_CORE_BUS, CLK_CON_MUX_MUX_CLKCMU_CORE_CCI, CLK_CON_MUX_MUX_CLKCMU_CORE_MMC_EMBD, @@ -133,6 +137,7 @@ static const unsigned long top_clk_regs[] __initconst = { CLK_CON_MUX_MUX_CLKCMU_PERI_BUS, CLK_CON_MUX_MUX_CLKCMU_PERI_IP, CLK_CON_MUX_MUX_CLKCMU_PERI_UART, + CLK_CON_DIV_CLKCMU_APM_BUS, CLK_CON_DIV_CLKCMU_CORE_BUS, CLK_CON_DIV_CLKCMU_CORE_CCI, CLK_CON_DIV_CLKCMU_CORE_MMC_EMBD, @@ -150,6 +155,7 @@ static const unsigned long top_clk_regs[] __initconst = { CLK_CON_DIV_PLL_SHARED1_DIV2, CLK_CON_DIV_PLL_SHARED1_DIV3, CLK_CON_DIV_PLL_SHARED1_DIV4, + CLK_CON_GAT_GATE_CLKCMU_APM_BUS, CLK_CON_GAT_GATE_CLKCMU_CORE_BUS, CLK_CON_GAT_GATE_CLKCMU_CORE_CCI, CLK_CON_GAT_GATE_CLKCMU_CORE_MMC_EMBD, @@ -183,6 +189,8 @@ static const struct samsung_pll_clock top_pll_clks[] __initconst = { PNAME(mout_shared0_pll_p) = { "oscclk", "fout_shared0_pll" }; PNAME(mout_shared1_pll_p) = { "oscclk", "fout_shared1_pll" }; PNAME(mout_mmc_pll_p) = { "oscclk", "fout_mmc_pll" }; +/* List of parent clocks for Muxes in CMU_TOP: for CMU_APM */ +PNAME(mout_clkcmu_apm_bus_p) = { "dout_shared0_div4", "pll_shared1_div4" }; /* List of parent clocks for Muxes in CMU_TOP: for CMU_CORE */ PNAME(mout_core_bus_p) = { "dout_shared1_div2", "dout_shared0_div3", "dout_shared1_div3", "dout_shared0_div4" }; @@ -222,6 +230,10 @@ static const struct samsung_mux_clock top_mux_clks[] __initconst = { MUX(CLK_MOUT_MMC_PLL, "mout_mmc_pll", mout_mmc_pll_p, PLL_CON0_PLL_MMC, 4, 1), + /* APM */ + MUX(CLK_MOUT_CLKCMU_APM_BUS, "mout_clkcmu_apm_bus", + mout_clkcmu_apm_bus_p, CLK_CON_MUX_MUX_CLKCMU_APM_BUS, 0, 1), + /* CORE */ MUX(CLK_MOUT_CORE_BUS, "mout_core_bus", mout_core_bus_p, CLK_CON_MUX_MUX_CLKCMU_CORE_BUS, 0, 2), @@ -268,6 +280,10 @@ static const struct samsung_div_clock top_div_clks[] __initconst = { DIV(CLK_DOUT_SHARED1_DIV4, "dout_shared1_div4", "dout_shared1_div2", CLK_CON_DIV_PLL_SHARED1_DIV4, 0, 1), + /* APM */ + DIV(CLK_DOUT_CLKCMU_APM_BUS, "dout_clkcmu_apm_bus", + "gout_clkcmu_apm_bus", CLK_CON_DIV_CLKCMU_APM_BUS, 0, 3), + /* CORE */ DIV(CLK_DOUT_CORE_BUS, "dout_core_bus", "gout_core_bus", CLK_CON_DIV_CLKCMU_CORE_BUS, 0, 4), @@ -310,6 +326,10 @@ static const struct samsung_gate_clock top_gate_clks[] __initconst = { GATE(CLK_GOUT_CORE_SSS, "gout_core_sss", "mout_core_sss", CLK_CON_GAT_GATE_CLKCMU_CORE_SSS, 21, 0, 0), + /* APM */ + GATE(CLK_GOUT_CLKCMU_APM_BUS, "gout_clkcmu_apm_bus", + "mout_clkcmu_apm_bus", CLK_CON_GAT_GATE_CLKCMU_APM_BUS, 21, 0, 0), + /* DPU */ GATE(CLK_GOUT_DPU, "gout_dpu", "mout_dpu", CLK_CON_GAT_GATE_CLKCMU_DPU, 21, 0, 0), @@ -354,6 +374,124 @@ static void __init exynos850_cmu_top_init(struct device_node *np) CLK_OF_DECLARE(exynos850_cmu_top, "samsung,exynos850-cmu-top", exynos850_cmu_top_init); +/* ---- CMU_APM ------------------------------------------------------------- */ + +/* Register Offset definitions for CMU_APM (0x11800000) */ +#define PLL_CON0_MUX_CLKCMU_APM_BUS_USER 0x0600 +#define PLL_CON0_MUX_CLK_RCO_APM_I3C_USER 0x0610 +#define PLL_CON0_MUX_CLK_RCO_APM_USER 0x0620 +#define PLL_CON0_MUX_DLL_USER 0x0630 +#define CLK_CON_MUX_MUX_CLKCMU_CHUB_BUS 0x1000 +#define CLK_CON_MUX_MUX_CLK_APM_BUS 0x1004 +#define CLK_CON_MUX_MUX_CLK_APM_I3C 0x1008 +#define CLK_CON_DIV_CLKCMU_CHUB_BUS 0x1800 +#define CLK_CON_DIV_DIV_CLK_APM_BUS 0x1804 +#define CLK_CON_DIV_DIV_CLK_APM_I3C 0x1808 +#define CLK_CON_GAT_CLKCMU_CMGP_BUS 0x2000 +#define CLK_CON_GAT_GATE_CLKCMU_CHUB_BUS 0x2014 +#define CLK_CON_GAT_GOUT_APM_APBIF_RTC_PCLK 0x2024 +#define CLK_CON_GAT_GOUT_APM_APBIF_TOP_RTC_PCLK 0x2028 +#define CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_PCLK 0x2034 +#define CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_SCLK 0x2038 +#define CLK_CON_GAT_GOUT_APM_SPEEDY_APM_PCLK 0x20bc + +static const unsigned long apm_clk_regs[] __initconst = { + PLL_CON0_MUX_CLKCMU_APM_BUS_USER, + PLL_CON0_MUX_CLK_RCO_APM_I3C_USER, + PLL_CON0_MUX_CLK_RCO_APM_USER, + PLL_CON0_MUX_DLL_USER, + CLK_CON_MUX_MUX_CLKCMU_CHUB_BUS, + CLK_CON_MUX_MUX_CLK_APM_BUS, + CLK_CON_MUX_MUX_CLK_APM_I3C, + CLK_CON_DIV_CLKCMU_CHUB_BUS, + CLK_CON_DIV_DIV_CLK_APM_BUS, + CLK_CON_DIV_DIV_CLK_APM_I3C, + CLK_CON_GAT_CLKCMU_CMGP_BUS, + CLK_CON_GAT_GATE_CLKCMU_CHUB_BUS, + CLK_CON_GAT_GOUT_APM_APBIF_RTC_PCLK, + CLK_CON_GAT_GOUT_APM_APBIF_TOP_RTC_PCLK, + CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_PCLK, + CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_SCLK, + CLK_CON_GAT_GOUT_APM_SPEEDY_APM_PCLK, +}; + +/* List of parent clocks for Muxes in CMU_APM */ +PNAME(mout_apm_bus_user_p) = { "oscclk_rco_apm", "dout_clkcmu_apm_bus" }; +PNAME(mout_rco_apm_i3c_user_p) = { "oscclk_rco_apm", "clk_rco_i3c_pmic" }; +PNAME(mout_rco_apm_user_p) = { "oscclk_rco_apm", "clk_rco_apm__alv" }; +PNAME(mout_dll_user_p) = { "oscclk_rco_apm", "clk_dll_dco" }; +PNAME(mout_clkcmu_chub_bus_p) = { "mout_apm_bus_user", "mout_dll_user" }; +PNAME(mout_apm_bus_p) = { "mout_rco_apm_user", "mout_apm_bus_user", + "mout_dll_user", "oscclk_rco_apm" }; +PNAME(mout_apm_i3c_p) = { "dout_apm_i3c", "mout_rco_apm_i3c_user" }; + +static const struct samsung_fixed_rate_clock apm_fixed_clks[] __initconst = { + FRATE(CLK_RCO_I3C_PMIC, "clk_rco_i3c_pmic", NULL, 0, 491520000), + FRATE(OSCCLK_RCO_APM, "oscclk_rco_apm", NULL, 0, 24576000), + FRATE(CLK_RCO_APM__ALV, "clk_rco_apm__alv", NULL, 0, 49152000), + FRATE(CLK_DLL_DCO, "clk_dll_dco", NULL, 0, 360000000), +}; + +static const struct samsung_mux_clock apm_mux_clks[] __initconst = { + MUX(CLK_MOUT_APM_BUS_USER, "mout_apm_bus_user", mout_apm_bus_user_p, + PLL_CON0_MUX_CLKCMU_APM_BUS_USER, 4, 1), + MUX(CLK_MOUT_RCO_APM_I3C_USER, "mout_rco_apm_i3c_user", + mout_rco_apm_i3c_user_p, PLL_CON0_MUX_CLK_RCO_APM_I3C_USER, 4, 1), + MUX(CLK_MOUT_RCO_APM_USER, "mout_rco_apm_user", mout_rco_apm_user_p, + PLL_CON0_MUX_CLK_RCO_APM_USER, 4, 1), + MUX(CLK_MOUT_DLL_USER, "mout_dll_user", mout_dll_user_p, + PLL_CON0_MUX_DLL_USER, 4, 1), + MUX(CLK_MOUT_CLKCMU_CHUB_BUS, "mout_clkcmu_chub_bus", + mout_clkcmu_chub_bus_p, CLK_CON_MUX_MUX_CLKCMU_CHUB_BUS, 0, 1), + MUX(CLK_MOUT_APM_BUS, "mout_apm_bus", mout_apm_bus_p, + CLK_CON_MUX_MUX_CLK_APM_BUS, 0, 2), + MUX(CLK_MOUT_APM_I3C, "mout_apm_i3c", mout_apm_i3c_p, + CLK_CON_MUX_MUX_CLK_APM_I3C, 0, 1), +}; + +static const struct samsung_div_clock apm_div_clks[] __initconst = { + DIV(CLK_DOUT_CLKCMU_CHUB_BUS, "dout_clkcmu_chub_bus", + "gout_clkcmu_chub_bus", + CLK_CON_DIV_CLKCMU_CHUB_BUS, 0, 3), + DIV(CLK_DOUT_APM_BUS, "dout_apm_bus", "mout_apm_bus", + CLK_CON_DIV_DIV_CLK_APM_BUS, 0, 3), + DIV(CLK_DOUT_APM_I3C, "dout_apm_i3c", "mout_apm_bus", + CLK_CON_DIV_DIV_CLK_APM_I3C, 0, 3), +}; + +static const struct samsung_gate_clock apm_gate_clks[] __initconst = { + GATE(CLK_GOUT_CLKCMU_CMGP_BUS, "gout_clkcmu_cmgp_bus", "dout_apm_bus", + CLK_CON_GAT_CLKCMU_CMGP_BUS, 21, 0, 0), + GATE(CLK_GOUT_CLKCMU_CHUB_BUS, "gout_clkcmu_chub_bus", + "mout_clkcmu_chub_bus", + CLK_CON_GAT_GATE_CLKCMU_CHUB_BUS, 21, 0, 0), + GATE(CLK_GOUT_RTC_PCLK, "gout_rtc_pclk", "dout_apm_bus", + CLK_CON_GAT_GOUT_APM_APBIF_RTC_PCLK, 21, 0, 0), + GATE(CLK_GOUT_TOP_RTC_PCLK, "gout_top_rtc_pclk", "dout_apm_bus", + CLK_CON_GAT_GOUT_APM_APBIF_TOP_RTC_PCLK, 21, 0, 0), + GATE(CLK_GOUT_I3C_PCLK, "gout_i3c_pclk", "dout_apm_bus", + CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_PCLK, 21, 0, 0), + GATE(CLK_GOUT_I3C_SCLK, "gout_i3c_sclk", "mout_apm_i3c", + CLK_CON_GAT_GOUT_APM_I3C_APM_PMIC_I_SCLK, 21, 0, 0), + GATE(CLK_GOUT_SPEEDY_PCLK, "gout_speedy_pclk", "dout_apm_bus", + CLK_CON_GAT_GOUT_APM_SPEEDY_APM_PCLK, 21, 0, 0), +}; + +static const struct samsung_cmu_info apm_cmu_info __initconst = { + .mux_clks = apm_mux_clks, + .nr_mux_clks = ARRAY_SIZE(apm_mux_clks), + .div_clks = apm_div_clks, + .nr_div_clks = ARRAY_SIZE(apm_div_clks), + .gate_clks = apm_gate_clks, + .nr_gate_clks = ARRAY_SIZE(apm_gate_clks), + .fixed_clks = apm_fixed_clks, + .nr_fixed_clks = ARRAY_SIZE(apm_fixed_clks), + .nr_clk_ids = APM_NR_CLK, + .clk_regs = apm_clk_regs, + .nr_clk_regs = ARRAY_SIZE(apm_clk_regs), + .clk_name = "dout_clkcmu_apm_bus", +}; + /* ---- CMU_HSI ------------------------------------------------------------- */ /* Register Offset definitions for CMU_HSI (0x13400000) */ @@ -801,9 +939,11 @@ static int __init exynos850_cmu_probe(struct platform_device *pdev) return 0; } -/* CMUs which belong to Power Domains and need runtime PM to be implemented */ static const struct of_device_id exynos850_cmu_of_match[] = { { + .compatible = "samsung,exynos850-cmu-apm", + .data = &apm_cmu_info, + }, { .compatible = "samsung,exynos850-cmu-hsi", .data = &hsi_cmu_info, }, { |