From 17f7dc48aabd90a3327495dfc24c3476c43f12cb Mon Sep 17 00:00:00 2001 From: Chanho Park Date: Wed, 4 May 2022 16:51:46 +0900 Subject: [PATCH] clk: samsung: exynosautov9: add cmu_core clock support Add CMU_CORE clock which represents Core BUS clocks. The source clocks of this CMU block are oscclk or dout_clkcmu_core_bus. Thus, two source clocks should be provided via device tree. All the gate clocks are defined as CLK_IS_CRITICAL because they control(gate/ungate) core bus clocks but not been assigned to any drivers. Signed-off-by: Chanho Park Signed-off-by: Sylwester Nawrocki Reviewed-by: Krzysztof Kozlowski Acked-by: Chanwoo Choi Link: https://lore.kernel.org/r/20220504075154.58819-5-chanho61.park@samsung.com --- drivers/clk/samsung/clk-exynosautov9.c | 92 ++++++++++++++++++++++++++++++++++ 1 file changed, 92 insertions(+) diff --git a/drivers/clk/samsung/clk-exynosautov9.c b/drivers/clk/samsung/clk-exynosautov9.c index 96c6c9d..984ecba 100644 --- a/drivers/clk/samsung/clk-exynosautov9.c +++ b/drivers/clk/samsung/clk-exynosautov9.c @@ -956,3 +956,95 @@ static void __init exynosautov9_cmu_top_init(struct device_node *np) /* Register CMU_TOP early, as it's a dependency for other early domains */ CLK_OF_DECLARE(exynosautov9_cmu_top, "samsung,exynosautov9-cmu-top", exynosautov9_cmu_top_init); + +/* ---- CMU_CORE ----------------------------------------------------------- */ + +/* Register Offset definitions for CMU_CORE (0x1b030000) */ +#define PLL_CON0_MUX_CLKCMU_CORE_BUS_USER 0x0600 +#define CLK_CON_MUX_MUX_CORE_CMUREF 0x1000 +#define CLK_CON_DIV_DIV_CLK_CORE_BUSP 0x1800 +#define CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK 0x2000 +#define CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK 0x2004 +#define CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK 0x2008 + +static const unsigned long core_clk_regs[] __initconst = { + PLL_CON0_MUX_CLKCMU_CORE_BUS_USER, + CLK_CON_MUX_MUX_CORE_CMUREF, + CLK_CON_DIV_DIV_CLK_CORE_BUSP, + CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK, + CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK, + CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK, +}; + +/* List of parent clocks for Muxes in CMU_CORE */ +PNAME(mout_core_bus_user_p) = { "oscclk", "dout_clkcmu_core_bus" }; + +static const struct samsung_mux_clock core_mux_clks[] __initconst = { + MUX(CLK_MOUT_CORE_BUS_USER, "mout_core_bus_user", mout_core_bus_user_p, + PLL_CON0_MUX_CLKCMU_CORE_BUS_USER, 4, 1), +}; + +static const struct samsung_div_clock core_div_clks[] __initconst = { + DIV(CLK_DOUT_CORE_BUSP, "dout_core_busp", "mout_core_bus_user", + CLK_CON_DIV_DIV_CLK_CORE_BUSP, 0, 3), +}; + +static const struct samsung_gate_clock core_gate_clks[] __initconst = { + GATE(CLK_GOUT_CORE_CCI_CLK, "gout_core_cci_clk", "mout_core_bus_user", + CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_CLK, 21, + CLK_IS_CRITICAL, 0), + GATE(CLK_GOUT_CORE_CCI_PCLK, "gout_core_cci_pclk", "dout_core_busp", + CLK_CON_GAT_CLK_BLK_CORE_UID_CCI_IPCLKPORT_PCLK, 21, + CLK_IS_CRITICAL, 0), + GATE(CLK_GOUT_CORE_CMU_CORE_PCLK, "gout_core_cmu_core_pclk", + "dout_core_busp", + CLK_CON_GAT_CLK_BLK_CORE_UID_CORE_CMU_CORE_IPCLKPORT_PCLK, 21, + CLK_IS_CRITICAL, 0), +}; + +static const struct samsung_cmu_info core_cmu_info __initconst = { + .mux_clks = core_mux_clks, + .nr_mux_clks = ARRAY_SIZE(core_mux_clks), + .div_clks = core_div_clks, + .nr_div_clks = ARRAY_SIZE(core_div_clks), + .gate_clks = core_gate_clks, + .nr_gate_clks = ARRAY_SIZE(core_gate_clks), + .nr_clk_ids = CORE_NR_CLK, + .clk_regs = core_clk_regs, + .nr_clk_regs = ARRAY_SIZE(core_clk_regs), + .clk_name = "dout_clkcmu_core_bus", +}; + +static int __init exynosautov9_cmu_probe(struct platform_device *pdev) +{ + const struct samsung_cmu_info *info; + struct device *dev = &pdev->dev; + + info = of_device_get_match_data(dev); + exynos_arm64_register_cmu(dev, dev->of_node, info); + + return 0; +} + +static const struct of_device_id exynosautov9_cmu_of_match[] = { + { + .compatible = "samsung,exynosautov9-cmu-core", + .data = &core_cmu_info, + }, { + }, +}; + +static struct platform_driver exynosautov9_cmu_driver __refdata = { + .driver = { + .name = "exynosautov9-cmu", + .of_match_table = exynosautov9_cmu_of_match, + .suppress_bind_attrs = true, + }, + .probe = exynosautov9_cmu_probe, +}; + +static int __init exynosautov9_cmu_init(void) +{ + return platform_driver_register(&exynosautov9_cmu_driver); +} +core_initcall(exynosautov9_cmu_init); -- 2.7.4