diff options
5 files changed, 155 insertions, 31 deletions
diff --git a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml index caf442ead24b..31e106ef913d 100644 --- a/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml +++ b/Documentation/devicetree/bindings/clock/google,gs101-clock.yaml @@ -46,6 +46,9 @@ properties: "#clock-cells": const: 1 + power-domains: + maxItems: 1 + reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml index 72f59db73f76..5bf905f88a1a 100644 --- a/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml +++ b/Documentation/devicetree/bindings/clock/samsung,exynosautov920-clock.yaml @@ -38,6 +38,8 @@ properties: - samsung,exynosautov920-cmu-hsi0 - samsung,exynosautov920-cmu-hsi1 - samsung,exynosautov920-cmu-hsi2 + - samsung,exynosautov920-cmu-m2m + - samsung,exynosautov920-cmu-mfc - samsung,exynosautov920-cmu-misc - samsung,exynosautov920-cmu-peric0 - samsung,exynosautov920-cmu-peric1 @@ -226,6 +228,46 @@ allOf: - const: embd - const: ethernet + - if: + properties: + compatible: + contains: + const: samsung,exynosautov920-cmu-m2m + + then: + properties: + clocks: + items: + - description: External reference clock (38.4 MHz) + - description: CMU_M2M NOC clock (from CMU_TOP) + - description: CMU_M2M JPEG clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: noc + - const: jpeg + + - if: + properties: + compatible: + contains: + const: samsung,exynosautov920-cmu-mfc + + then: + properties: + clocks: + items: + - description: External reference clock (38.4 MHz) + - description: CMU_MFC MFC clock (from CMU_TOP) + - description: CMU_MFC WFD clock (from CMU_TOP) + + clock-names: + items: + - const: oscclk + - const: mfc + - const: wfd + required: - compatible - "#clock-cells" diff --git a/drivers/clk/samsung/clk-exynosautov920.c b/drivers/clk/samsung/clk-exynosautov920.c index 572b6ace14ac..b90b73c3518f 100644 --- a/drivers/clk/samsung/clk-exynosautov920.c +++ b/drivers/clk/samsung/clk-exynosautov920.c @@ -27,6 +27,8 @@ #define CLKS_NR_HSI0 (CLK_DOUT_HSI0_PCIE_APB + 1) #define CLKS_NR_HSI1 (CLK_MOUT_HSI1_USBDRD + 1) #define CLKS_NR_HSI2 (CLK_DOUT_HSI2_ETHERNET_PTP + 1) +#define CLKS_NR_M2M (CLK_DOUT_M2M_NOCP + 1) +#define CLKS_NR_MFC (CLK_DOUT_MFC_NOCP + 1) /* ---- CMU_TOP ------------------------------------------------------------ */ @@ -1821,6 +1823,88 @@ static const struct samsung_cmu_info hsi2_cmu_info __initconst = { .clk_name = "noc", }; +/* ---- CMU_M2M --------------------------------------------------------- */ + +/* Register Offset definitions for CMU_M2M (0x1a800000) */ +#define PLL_CON0_MUX_CLKCMU_M2M_JPEG_USER 0x600 +#define PLL_CON0_MUX_CLKCMU_M2M_NOC_USER 0x610 +#define CLK_CON_DIV_DIV_CLK_M2M_NOCP 0x1800 + +static const unsigned long m2m_clk_regs[] __initconst = { + PLL_CON0_MUX_CLKCMU_M2M_JPEG_USER, + PLL_CON0_MUX_CLKCMU_M2M_NOC_USER, + CLK_CON_DIV_DIV_CLK_M2M_NOCP, +}; + +/* List of parent clocks for Muxes in CMU_M2M */ +PNAME(mout_clkcmu_m2m_noc_user_p) = { "oscclk", "dout_clkcmu_m2m_noc" }; +PNAME(mout_clkcmu_m2m_jpeg_user_p) = { "oscclk", "dout_clkcmu_m2m_jpeg" }; + +static const struct samsung_mux_clock m2m_mux_clks[] __initconst = { + MUX(CLK_MOUT_M2M_JPEG_USER, "mout_clkcmu_m2m_jpeg_user", + mout_clkcmu_m2m_jpeg_user_p, PLL_CON0_MUX_CLKCMU_M2M_JPEG_USER, 4, 1), + MUX(CLK_MOUT_M2M_NOC_USER, "mout_clkcmu_m2m_noc_user", + mout_clkcmu_m2m_noc_user_p, PLL_CON0_MUX_CLKCMU_M2M_NOC_USER, 4, 1), +}; + +static const struct samsung_div_clock m2m_div_clks[] __initconst = { + DIV(CLK_DOUT_M2M_NOCP, "dout_m2m_nocp", + "mout_clkcmu_m2m_noc_user", CLK_CON_DIV_DIV_CLK_M2M_NOCP, + 0, 3), +}; + +static const struct samsung_cmu_info m2m_cmu_info __initconst = { + .mux_clks = m2m_mux_clks, + .nr_mux_clks = ARRAY_SIZE(m2m_mux_clks), + .div_clks = m2m_div_clks, + .nr_div_clks = ARRAY_SIZE(m2m_div_clks), + .nr_clk_ids = CLKS_NR_M2M, + .clk_regs = m2m_clk_regs, + .nr_clk_regs = ARRAY_SIZE(m2m_clk_regs), + .clk_name = "noc", +}; + +/* ---- CMU_MFC --------------------------------------------------------- */ + +/* Register Offset definitions for CMU_MFC (0x19c00000) */ +#define PLL_CON0_MUX_CLKCMU_MFC_MFC_USER 0x600 +#define PLL_CON0_MUX_CLKCMU_MFC_WFD_USER 0x610 +#define CLK_CON_DIV_DIV_CLK_MFC_NOCP 0x1800 + +static const unsigned long mfc_clk_regs[] __initconst = { + PLL_CON0_MUX_CLKCMU_MFC_MFC_USER, + PLL_CON0_MUX_CLKCMU_MFC_WFD_USER, + CLK_CON_DIV_DIV_CLK_MFC_NOCP, +}; + +/* List of parent clocks for Muxes in CMU_MFC */ +PNAME(mout_clkcmu_mfc_mfc_user_p) = { "oscclk", "dout_clkcmu_mfc_mfc" }; +PNAME(mout_clkcmu_mfc_wfd_user_p) = { "oscclk", "dout_clkcmu_mfc_wfd" }; + +static const struct samsung_mux_clock mfc_mux_clks[] __initconst = { + MUX(CLK_MOUT_MFC_MFC_USER, "mout_clkcmu_mfc_mfc_user", + mout_clkcmu_mfc_mfc_user_p, PLL_CON0_MUX_CLKCMU_MFC_MFC_USER, 4, 1), + MUX(CLK_MOUT_MFC_WFD_USER, "mout_clkcmu_mfc_wfd_user", + mout_clkcmu_mfc_wfd_user_p, PLL_CON0_MUX_CLKCMU_MFC_WFD_USER, 4, 1), +}; + +static const struct samsung_div_clock mfc_div_clks[] __initconst = { + DIV(CLK_DOUT_MFC_NOCP, "dout_mfc_nocp", + "mout_clkcmu_mfc_mfc_user", CLK_CON_DIV_DIV_CLK_MFC_NOCP, + 0, 3), +}; + +static const struct samsung_cmu_info mfc_cmu_info __initconst = { + .mux_clks = mfc_mux_clks, + .nr_mux_clks = ARRAY_SIZE(mfc_mux_clks), + .div_clks = mfc_div_clks, + .nr_div_clks = ARRAY_SIZE(mfc_div_clks), + .nr_clk_ids = CLKS_NR_MFC, + .clk_regs = mfc_clk_regs, + .nr_clk_regs = ARRAY_SIZE(mfc_clk_regs), + .clk_name = "noc", +}; + static int __init exynosautov920_cmu_probe(struct platform_device *pdev) { const struct samsung_cmu_info *info; @@ -1851,6 +1935,12 @@ static const struct of_device_id exynosautov920_cmu_of_match[] = { }, { .compatible = "samsung,exynosautov920-cmu-hsi2", .data = &hsi2_cmu_info, + }, { + .compatible = "samsung,exynosautov920-cmu-m2m", + .data = &m2m_cmu_info, + }, { + .compatible = "samsung,exynosautov920-cmu-mfc", + .data = &mfc_cmu_info, }, { } }; diff --git a/drivers/clk/samsung/clk-pll.c b/drivers/clk/samsung/clk-pll.c index 7bea7be1d7e4..0a8fc9649ae2 100644 --- a/drivers/clk/samsung/clk-pll.c +++ b/drivers/clk/samsung/clk-pll.c @@ -11,14 +11,12 @@ #include <linux/iopoll.h> #include <linux/delay.h> #include <linux/slab.h> -#include <linux/timekeeping.h> #include <linux/clk-provider.h> #include <linux/io.h> #include "clk.h" #include "clk-pll.h" -#define PLL_TIMEOUT_US 20000U -#define PLL_TIMEOUT_LOOPS 1000000U +#define PLL_TIMEOUT_LOOPS 20000U struct samsung_clk_pll { struct clk_hw hw; @@ -71,20 +69,11 @@ static int samsung_pll_determine_rate(struct clk_hw *hw, return 0; } -static bool pll_early_timeout = true; - -static int __init samsung_pll_disable_early_timeout(void) -{ - pll_early_timeout = false; - return 0; -} -arch_initcall(samsung_pll_disable_early_timeout); - /* Wait until the PLL is locked */ static int samsung_pll_lock_wait(struct samsung_clk_pll *pll, unsigned int reg_mask) { - int i, ret; + int ret; u32 val; /* @@ -93,25 +82,15 @@ static int samsung_pll_lock_wait(struct samsung_clk_pll *pll, * initialized, another when the timekeeping is suspended. udelay() also * cannot be used when the clocksource is not running on arm64, since * the current timer is used as cycle counter. So a simple busy loop - * is used here in that special cases. The limit of iterations has been - * derived from experimental measurements of various PLLs on multiple - * Exynos SoC variants. Single register read time was usually in range - * 0.4...1.5 us, never less than 0.4 us. + * is used here. + * The limit of iterations has been derived from experimental + * measurements of various PLLs on multiple Exynos SoC variants. Single + * register read time was usually in range 0.4...1.5 us, never less than + * 0.4 us. */ - if (pll_early_timeout || timekeeping_suspended) { - i = PLL_TIMEOUT_LOOPS; - while (i-- > 0) { - if (readl_relaxed(pll->con_reg) & reg_mask) - return 0; - - cpu_relax(); - } - ret = -ETIMEDOUT; - } else { - ret = readl_relaxed_poll_timeout_atomic(pll->con_reg, val, - val & reg_mask, 0, PLL_TIMEOUT_US); - } - + ret = readl_relaxed_poll_timeout_atomic(pll->con_reg, val, + val & reg_mask, 0, + PLL_TIMEOUT_LOOPS); if (ret < 0) pr_err("Could not lock PLL %s\n", clk_hw_get_name(&pll->hw)); diff --git a/include/dt-bindings/clock/samsung,exynosautov920.h b/include/dt-bindings/clock/samsung,exynosautov920.h index 93e6233d1358..970d05167fc6 100644 --- a/include/dt-bindings/clock/samsung,exynosautov920.h +++ b/include/dt-bindings/clock/samsung,exynosautov920.h @@ -295,4 +295,14 @@ #define CLK_DOUT_HSI2_ETHERNET 6 #define CLK_DOUT_HSI2_ETHERNET_PTP 7 +/* CMU_M2M */ +#define CLK_MOUT_M2M_JPEG_USER 1 +#define CLK_MOUT_M2M_NOC_USER 2 +#define CLK_DOUT_M2M_NOCP 3 + +/* CMU_MFC */ +#define CLK_MOUT_MFC_MFC_USER 1 +#define CLK_MOUT_MFC_WFD_USER 2 +#define CLK_DOUT_MFC_NOCP 3 + #endif /* _DT_BINDINGS_CLOCK_EXYNOSAUTOV920_H */ |