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clk: samsung: exynosautov9: add cmu_core clock support

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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 <chanho61.park@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Link: https://lore.kernel.org/r/20220504075154.58819-5-chanho61.park@samsung.com
This commit is contained in:
Chanho Park
2022-05-04 16:51:46 +09:00
committed by Sylwester Nawrocki
parent 6587c62f69
commit 17f7dc48aa
1 changed files with 92 additions and 0 deletions
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92
drivers/clk/samsung/clk-exynosautov9.c
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@@ -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 */ /* Register CMU_TOP early, as it's a dependency for other early domains */
CLK_OF_DECLARE(exynosautov9_cmu_top, "samsung,exynosautov9-cmu-top", CLK_OF_DECLARE(exynosautov9_cmu_top, "samsung,exynosautov9-cmu-top",
exynosautov9_cmu_top_init); 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);