diff options
author | Sam Protsenko <semen.protsenko@linaro.org> | 2022-08-09 14:33:20 +0300 |
---|---|---|
committer | Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-08-23 10:14:47 +0300 |
commit | bf3a4c519ca5455d96de2b9a8b1467f536bc0679 (patch) | |
tree | 320a60563f33d6083c18848281db19ca358c6c60 /drivers/clk/samsung | |
parent | b73fd95def4fd9cde548ed17be19f845349e1c0c (diff) | |
download | linux-bf3a4c519ca5455d96de2b9a8b1467f536bc0679.tar.gz linux-bf3a4c519ca5455d96de2b9a8b1467f536bc0679.tar.bz2 linux-bf3a4c519ca5455d96de2b9a8b1467f536bc0679.zip |
clk: samsung: exynos850: Implement CMU_IS domain
CMU_IS clock domain provides clocks for IS IP-core (Image Signal
Processing Subsystem). According to Exynos850 TRM, CMU_IS generates
CSIS, IPP, ITP, VRA and GDC clocks for BLK_IS.
This patch adds next clocks:
- bus clocks in CMU_TOP needed for CMU_IS
- all internal CMU_IS clocks
- leaf clocks for IS IP-core, CSIS (Camera Serial Interface Slave),
D_TZPC (TrustZone Protection Controller), CSIS DMA, GDC (Geometric
Distortion Correction), IPP (Image Preprocessing Processing core),
ITP (Image Texture Processing core), MCSC (Multi-Channel Scaler),
VRA (Visual Recognition Accelerator), PPMU (Platform Performance
Monitoring Unit), SysMMU and SysReg
IS related gate clocks in CMU_TOP were marked as CLK_IS_CRITICAL,
because:
1. All of those have to be enabled in order to read
/sys/kernel/debug/clk/clk_summary file
2. When some user driver (e.g. exynos-sysmmu) disables some derived
leaf clock, it can lead to CMU_TOP clocks disable, which then makes
the system hang. To prevent that, the CLK_IS_CRITICAL flag is used,
as CLK_IGNORE_UNUSED is not enough.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220809113323.29965-7-semen.protsenko@linaro.org
Diffstat (limited to 'drivers/clk/samsung')
-rw-r--r-- | drivers/clk/samsung/clk-exynos850.c | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/drivers/clk/samsung/clk-exynos850.c b/drivers/clk/samsung/clk-exynos850.c index c91984f3f14f..18a36d58101e 100644 --- a/drivers/clk/samsung/clk-exynos850.c +++ b/drivers/clk/samsung/clk-exynos850.c @@ -39,6 +39,10 @@ #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 +#define CLK_CON_MUX_MUX_CLKCMU_IS_BUS 0x1048 +#define CLK_CON_MUX_MUX_CLKCMU_IS_GDC 0x104c +#define CLK_CON_MUX_MUX_CLKCMU_IS_ITP 0x1050 +#define CLK_CON_MUX_MUX_CLKCMU_IS_VRA 0x1054 #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 @@ -52,6 +56,10 @@ #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 +#define CLK_CON_DIV_CLKCMU_IS_BUS 0x1854 +#define CLK_CON_DIV_CLKCMU_IS_GDC 0x1858 +#define CLK_CON_DIV_CLKCMU_IS_ITP 0x185c +#define CLK_CON_DIV_CLKCMU_IS_VRA 0x1860 #define CLK_CON_DIV_CLKCMU_PERI_BUS 0x187c #define CLK_CON_DIV_CLKCMU_PERI_IP 0x1880 #define CLK_CON_DIV_CLKCMU_PERI_UART 0x1884 @@ -71,6 +79,10 @@ #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 +#define CLK_CON_GAT_GATE_CLKCMU_IS_BUS 0x2050 +#define CLK_CON_GAT_GATE_CLKCMU_IS_GDC 0x2054 +#define CLK_CON_GAT_GATE_CLKCMU_IS_ITP 0x2058 +#define CLK_CON_GAT_GATE_CLKCMU_IS_VRA 0x205c #define CLK_CON_GAT_GATE_CLKCMU_PERI_BUS 0x2080 #define CLK_CON_GAT_GATE_CLKCMU_PERI_IP 0x2084 #define CLK_CON_GAT_GATE_CLKCMU_PERI_UART 0x2088 @@ -95,6 +107,10 @@ static const unsigned long top_clk_regs[] __initconst = { CLK_CON_MUX_MUX_CLKCMU_HSI_BUS, CLK_CON_MUX_MUX_CLKCMU_HSI_MMC_CARD, CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD, + CLK_CON_MUX_MUX_CLKCMU_IS_BUS, + CLK_CON_MUX_MUX_CLKCMU_IS_GDC, + CLK_CON_MUX_MUX_CLKCMU_IS_ITP, + CLK_CON_MUX_MUX_CLKCMU_IS_VRA, CLK_CON_MUX_MUX_CLKCMU_PERI_BUS, CLK_CON_MUX_MUX_CLKCMU_PERI_IP, CLK_CON_MUX_MUX_CLKCMU_PERI_UART, @@ -108,6 +124,10 @@ static const unsigned long top_clk_regs[] __initconst = { CLK_CON_DIV_CLKCMU_HSI_BUS, CLK_CON_DIV_CLKCMU_HSI_MMC_CARD, CLK_CON_DIV_CLKCMU_HSI_USB20DRD, + CLK_CON_DIV_CLKCMU_IS_BUS, + CLK_CON_DIV_CLKCMU_IS_GDC, + CLK_CON_DIV_CLKCMU_IS_ITP, + CLK_CON_DIV_CLKCMU_IS_VRA, CLK_CON_DIV_CLKCMU_PERI_BUS, CLK_CON_DIV_CLKCMU_PERI_IP, CLK_CON_DIV_CLKCMU_PERI_UART, @@ -127,6 +147,10 @@ static const unsigned long top_clk_regs[] __initconst = { CLK_CON_GAT_GATE_CLKCMU_HSI_BUS, CLK_CON_GAT_GATE_CLKCMU_HSI_MMC_CARD, CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD, + CLK_CON_GAT_GATE_CLKCMU_IS_BUS, + CLK_CON_GAT_GATE_CLKCMU_IS_GDC, + CLK_CON_GAT_GATE_CLKCMU_IS_ITP, + CLK_CON_GAT_GATE_CLKCMU_IS_VRA, CLK_CON_GAT_GATE_CLKCMU_PERI_BUS, CLK_CON_GAT_GATE_CLKCMU_PERI_IP, CLK_CON_GAT_GATE_CLKCMU_PERI_UART, @@ -176,6 +200,15 @@ PNAME(mout_hsi_mmc_card_p) = { "oscclk", "dout_shared0_div2", "oscclk", "oscclk" }; PNAME(mout_hsi_usb20drd_p) = { "oscclk", "dout_shared0_div4", "dout_shared1_div4", "oscclk" }; +/* List of parent clocks for Muxes in CMU_TOP: for CMU_IS */ +PNAME(mout_is_bus_p) = { "dout_shared0_div2", "dout_shared1_div2", + "dout_shared0_div3", "dout_shared1_div3" }; +PNAME(mout_is_itp_p) = { "dout_shared0_div2", "dout_shared1_div2", + "dout_shared0_div3", "dout_shared1_div3" }; +PNAME(mout_is_vra_p) = { "dout_shared0_div2", "dout_shared1_div2", + "dout_shared0_div3", "dout_shared1_div3" }; +PNAME(mout_is_gdc_p) = { "dout_shared0_div2", "dout_shared1_div2", + "dout_shared0_div3", "dout_shared1_div3" }; /* List of parent clocks for Muxes in CMU_TOP: for CMU_PERI */ PNAME(mout_peri_bus_p) = { "dout_shared0_div4", "dout_shared1_div4" }; PNAME(mout_peri_uart_p) = { "oscclk", "dout_shared0_div4", @@ -225,6 +258,16 @@ static const struct samsung_mux_clock top_mux_clks[] __initconst = { MUX(CLK_MOUT_HSI_USB20DRD, "mout_hsi_usb20drd", mout_hsi_usb20drd_p, CLK_CON_MUX_MUX_CLKCMU_HSI_USB20DRD, 0, 2), + /* IS */ + MUX(CLK_MOUT_IS_BUS, "mout_is_bus", mout_is_bus_p, + CLK_CON_MUX_MUX_CLKCMU_IS_BUS, 0, 2), + MUX(CLK_MOUT_IS_ITP, "mout_is_itp", mout_is_itp_p, + CLK_CON_MUX_MUX_CLKCMU_IS_ITP, 0, 2), + MUX(CLK_MOUT_IS_VRA, "mout_is_vra", mout_is_vra_p, + CLK_CON_MUX_MUX_CLKCMU_IS_VRA, 0, 2), + MUX(CLK_MOUT_IS_GDC, "mout_is_gdc", mout_is_gdc_p, + CLK_CON_MUX_MUX_CLKCMU_IS_GDC, 0, 2), + /* PERI */ MUX(CLK_MOUT_PERI_BUS, "mout_peri_bus", mout_peri_bus_p, CLK_CON_MUX_MUX_CLKCMU_PERI_BUS, 0, 1), @@ -279,6 +322,16 @@ static const struct samsung_div_clock top_div_clks[] __initconst = { DIV(CLK_DOUT_HSI_USB20DRD, "dout_hsi_usb20drd", "gout_hsi_usb20drd", CLK_CON_DIV_CLKCMU_HSI_USB20DRD, 0, 4), + /* IS */ + DIV(CLK_DOUT_IS_BUS, "dout_is_bus", "gout_is_bus", + CLK_CON_DIV_CLKCMU_IS_BUS, 0, 4), + DIV(CLK_DOUT_IS_ITP, "dout_is_itp", "gout_is_itp", + CLK_CON_DIV_CLKCMU_IS_ITP, 0, 4), + DIV(CLK_DOUT_IS_VRA, "dout_is_vra", "gout_is_vra", + CLK_CON_DIV_CLKCMU_IS_VRA, 0, 4), + DIV(CLK_DOUT_IS_GDC, "dout_is_gdc", "gout_is_gdc", + CLK_CON_DIV_CLKCMU_IS_GDC, 0, 4), + /* PERI */ DIV(CLK_DOUT_PERI_BUS, "dout_peri_bus", "gout_peri_bus", CLK_CON_DIV_CLKCMU_PERI_BUS, 0, 4), @@ -319,6 +372,17 @@ static const struct samsung_gate_clock top_gate_clks[] __initconst = { GATE(CLK_GOUT_HSI_USB20DRD, "gout_hsi_usb20drd", "mout_hsi_usb20drd", CLK_CON_GAT_GATE_CLKCMU_HSI_USB20DRD, 21, 0, 0), + /* IS */ + /* TODO: These clocks have to be always enabled to access CMU_IS regs */ + GATE(CLK_GOUT_IS_BUS, "gout_is_bus", "mout_is_bus", + CLK_CON_GAT_GATE_CLKCMU_IS_BUS, 21, CLK_IS_CRITICAL, 0), + GATE(CLK_GOUT_IS_ITP, "gout_is_itp", "mout_is_itp", + CLK_CON_GAT_GATE_CLKCMU_IS_ITP, 21, CLK_IS_CRITICAL, 0), + GATE(CLK_GOUT_IS_VRA, "gout_is_vra", "mout_is_vra", + CLK_CON_GAT_GATE_CLKCMU_IS_VRA, 21, CLK_IS_CRITICAL, 0), + GATE(CLK_GOUT_IS_GDC, "gout_is_gdc", "mout_is_gdc", + CLK_CON_GAT_GATE_CLKCMU_IS_GDC, 21, CLK_IS_CRITICAL, 0), + /* PERI */ GATE(CLK_GOUT_PERI_BUS, "gout_peri_bus", "mout_peri_bus", CLK_CON_GAT_GATE_CLKCMU_PERI_BUS, 21, 0, 0), @@ -952,6 +1016,138 @@ static const struct samsung_cmu_info hsi_cmu_info __initconst = { .clk_name = "dout_hsi_bus", }; +/* ---- CMU_IS -------------------------------------------------------------- */ + +#define PLL_CON0_MUX_CLKCMU_IS_BUS_USER 0x0600 +#define PLL_CON0_MUX_CLKCMU_IS_GDC_USER 0x0610 +#define PLL_CON0_MUX_CLKCMU_IS_ITP_USER 0x0620 +#define PLL_CON0_MUX_CLKCMU_IS_VRA_USER 0x0630 +#define CLK_CON_DIV_DIV_CLK_IS_BUSP 0x1800 +#define CLK_CON_GAT_CLK_IS_CMU_IS_PCLK 0x2000 +#define CLK_CON_GAT_GOUT_IS_CSIS0_ACLK 0x2040 +#define CLK_CON_GAT_GOUT_IS_CSIS1_ACLK 0x2044 +#define CLK_CON_GAT_GOUT_IS_CSIS2_ACLK 0x2048 +#define CLK_CON_GAT_GOUT_IS_TZPC_PCLK 0x204c +#define CLK_CON_GAT_GOUT_IS_CLK_CSIS_DMA 0x2050 +#define CLK_CON_GAT_GOUT_IS_CLK_GDC 0x2054 +#define CLK_CON_GAT_GOUT_IS_CLK_IPP 0x2058 +#define CLK_CON_GAT_GOUT_IS_CLK_ITP 0x205c +#define CLK_CON_GAT_GOUT_IS_CLK_MCSC 0x2060 +#define CLK_CON_GAT_GOUT_IS_CLK_VRA 0x2064 +#define CLK_CON_GAT_GOUT_IS_PPMU_IS0_ACLK 0x2074 +#define CLK_CON_GAT_GOUT_IS_PPMU_IS0_PCLK 0x2078 +#define CLK_CON_GAT_GOUT_IS_PPMU_IS1_ACLK 0x207c +#define CLK_CON_GAT_GOUT_IS_PPMU_IS1_PCLK 0x2080 +#define CLK_CON_GAT_GOUT_IS_SYSMMU_IS0_CLK_S1 0x2098 +#define CLK_CON_GAT_GOUT_IS_SYSMMU_IS1_CLK_S1 0x209c +#define CLK_CON_GAT_GOUT_IS_SYSREG_PCLK 0x20a0 + +static const unsigned long is_clk_regs[] __initconst = { + PLL_CON0_MUX_CLKCMU_IS_BUS_USER, + PLL_CON0_MUX_CLKCMU_IS_GDC_USER, + PLL_CON0_MUX_CLKCMU_IS_ITP_USER, + PLL_CON0_MUX_CLKCMU_IS_VRA_USER, + CLK_CON_DIV_DIV_CLK_IS_BUSP, + CLK_CON_GAT_CLK_IS_CMU_IS_PCLK, + CLK_CON_GAT_GOUT_IS_CSIS0_ACLK, + CLK_CON_GAT_GOUT_IS_CSIS1_ACLK, + CLK_CON_GAT_GOUT_IS_CSIS2_ACLK, + CLK_CON_GAT_GOUT_IS_TZPC_PCLK, + CLK_CON_GAT_GOUT_IS_CLK_CSIS_DMA, + CLK_CON_GAT_GOUT_IS_CLK_GDC, + CLK_CON_GAT_GOUT_IS_CLK_IPP, + CLK_CON_GAT_GOUT_IS_CLK_ITP, + CLK_CON_GAT_GOUT_IS_CLK_MCSC, + CLK_CON_GAT_GOUT_IS_CLK_VRA, + CLK_CON_GAT_GOUT_IS_PPMU_IS0_ACLK, + CLK_CON_GAT_GOUT_IS_PPMU_IS0_PCLK, + CLK_CON_GAT_GOUT_IS_PPMU_IS1_ACLK, + CLK_CON_GAT_GOUT_IS_PPMU_IS1_PCLK, + CLK_CON_GAT_GOUT_IS_SYSMMU_IS0_CLK_S1, + CLK_CON_GAT_GOUT_IS_SYSMMU_IS1_CLK_S1, + CLK_CON_GAT_GOUT_IS_SYSREG_PCLK, +}; + +/* List of parent clocks for Muxes in CMU_IS */ +PNAME(mout_is_bus_user_p) = { "oscclk", "dout_is_bus" }; +PNAME(mout_is_itp_user_p) = { "oscclk", "dout_is_itp" }; +PNAME(mout_is_vra_user_p) = { "oscclk", "dout_is_vra" }; +PNAME(mout_is_gdc_user_p) = { "oscclk", "dout_is_gdc" }; + +static const struct samsung_mux_clock is_mux_clks[] __initconst = { + MUX(CLK_MOUT_IS_BUS_USER, "mout_is_bus_user", mout_is_bus_user_p, + PLL_CON0_MUX_CLKCMU_IS_BUS_USER, 4, 1), + MUX(CLK_MOUT_IS_ITP_USER, "mout_is_itp_user", mout_is_itp_user_p, + PLL_CON0_MUX_CLKCMU_IS_ITP_USER, 4, 1), + MUX(CLK_MOUT_IS_VRA_USER, "mout_is_vra_user", mout_is_vra_user_p, + PLL_CON0_MUX_CLKCMU_IS_VRA_USER, 4, 1), + MUX(CLK_MOUT_IS_GDC_USER, "mout_is_gdc_user", mout_is_gdc_user_p, + PLL_CON0_MUX_CLKCMU_IS_GDC_USER, 4, 1), +}; + +static const struct samsung_div_clock is_div_clks[] __initconst = { + DIV(CLK_DOUT_IS_BUSP, "dout_is_busp", "mout_is_bus_user", + CLK_CON_DIV_DIV_CLK_IS_BUSP, 0, 2), +}; + +static const struct samsung_gate_clock is_gate_clks[] __initconst = { + /* TODO: Should be enabled in IS driver */ + GATE(CLK_GOUT_IS_CMU_IS_PCLK, "gout_is_cmu_is_pclk", "dout_is_busp", + CLK_CON_GAT_CLK_IS_CMU_IS_PCLK, 21, CLK_IGNORE_UNUSED, 0), + GATE(CLK_GOUT_IS_CSIS0_ACLK, "gout_is_csis0_aclk", "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_CSIS0_ACLK, 21, 0, 0), + GATE(CLK_GOUT_IS_CSIS1_ACLK, "gout_is_csis1_aclk", "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_CSIS1_ACLK, 21, 0, 0), + GATE(CLK_GOUT_IS_CSIS2_ACLK, "gout_is_csis2_aclk", "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_CSIS2_ACLK, 21, 0, 0), + GATE(CLK_GOUT_IS_TZPC_PCLK, "gout_is_tzpc_pclk", "dout_is_busp", + CLK_CON_GAT_GOUT_IS_TZPC_PCLK, 21, 0, 0), + GATE(CLK_GOUT_IS_CSIS_DMA_CLK, "gout_is_csis_dma_clk", + "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_CLK_CSIS_DMA, 21, 0, 0), + GATE(CLK_GOUT_IS_GDC_CLK, "gout_is_gdc_clk", "mout_is_gdc_user", + CLK_CON_GAT_GOUT_IS_CLK_GDC, 21, 0, 0), + GATE(CLK_GOUT_IS_IPP_CLK, "gout_is_ipp_clk", "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_CLK_IPP, 21, 0, 0), + GATE(CLK_GOUT_IS_ITP_CLK, "gout_is_itp_clk", "mout_is_itp_user", + CLK_CON_GAT_GOUT_IS_CLK_ITP, 21, 0, 0), + GATE(CLK_GOUT_IS_MCSC_CLK, "gout_is_mcsc_clk", "mout_is_itp_user", + CLK_CON_GAT_GOUT_IS_CLK_MCSC, 21, 0, 0), + GATE(CLK_GOUT_IS_VRA_CLK, "gout_is_vra_clk", "mout_is_vra_user", + CLK_CON_GAT_GOUT_IS_CLK_VRA, 21, 0, 0), + GATE(CLK_GOUT_IS_PPMU_IS0_ACLK, "gout_is_ppmu_is0_aclk", + "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_PPMU_IS0_ACLK, 21, 0, 0), + GATE(CLK_GOUT_IS_PPMU_IS0_PCLK, "gout_is_ppmu_is0_pclk", "dout_is_busp", + CLK_CON_GAT_GOUT_IS_PPMU_IS0_PCLK, 21, 0, 0), + GATE(CLK_GOUT_IS_PPMU_IS1_ACLK, "gout_is_ppmu_is1_aclk", + "mout_is_itp_user", + CLK_CON_GAT_GOUT_IS_PPMU_IS1_ACLK, 21, 0, 0), + GATE(CLK_GOUT_IS_PPMU_IS1_PCLK, "gout_is_ppmu_is1_pclk", "dout_is_busp", + CLK_CON_GAT_GOUT_IS_PPMU_IS1_PCLK, 21, 0, 0), + GATE(CLK_GOUT_IS_SYSMMU_IS0_CLK, "gout_is_sysmmu_is0_clk", + "mout_is_bus_user", + CLK_CON_GAT_GOUT_IS_SYSMMU_IS0_CLK_S1, 21, 0, 0), + GATE(CLK_GOUT_IS_SYSMMU_IS1_CLK, "gout_is_sysmmu_is1_clk", + "mout_is_itp_user", + CLK_CON_GAT_GOUT_IS_SYSMMU_IS1_CLK_S1, 21, 0, 0), + GATE(CLK_GOUT_IS_SYSREG_PCLK, "gout_is_sysreg_pclk", "dout_is_busp", + CLK_CON_GAT_GOUT_IS_SYSREG_PCLK, 21, 0, 0), +}; + +static const struct samsung_cmu_info is_cmu_info __initconst = { + .mux_clks = is_mux_clks, + .nr_mux_clks = ARRAY_SIZE(is_mux_clks), + .div_clks = is_div_clks, + .nr_div_clks = ARRAY_SIZE(is_div_clks), + .gate_clks = is_gate_clks, + .nr_gate_clks = ARRAY_SIZE(is_gate_clks), + .nr_clk_ids = IS_NR_CLK, + .clk_regs = is_clk_regs, + .nr_clk_regs = ARRAY_SIZE(is_clk_regs), + .clk_name = "dout_is_bus", +}; + /* ---- CMU_PERI ------------------------------------------------------------ */ /* Register Offset definitions for CMU_PERI (0x10030000) */ @@ -1335,6 +1531,9 @@ static const struct of_device_id exynos850_cmu_of_match[] = { .compatible = "samsung,exynos850-cmu-hsi", .data = &hsi_cmu_info, }, { + .compatible = "samsung,exynos850-cmu-is", + .data = &is_cmu_info, + }, { .compatible = "samsung,exynos850-cmu-core", .data = &core_cmu_info, }, { |