clk: mvebu: Add clk support for the orion5x SoC mv88f5181 (57d0ee07) · Commits · 戴 / test

Documentation/devicetree/bindings/clock/mvebu-core-clock.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -52,6 +52,7 @@ Required properties:
		"marvell,dove-core-clock" - for Dove SoC core clocks
		"marvell,kirkwood-core-clock" - for Kirkwood SoC (except mv88f6180)
		"marvell,mv88f6180-core-clock" - for Kirkwood MV88f6180 SoC
		"marvell,mv88f5181-core-clock" - for Orion MV88F5181 SoC
		"marvell,mv88f5182-core-clock" - for Orion MV88F5182 SoC
		"marvell,mv88f5281-core-clock" - for Orion MV88F5281 SoC
		"marvell,mv88f6183-core-clock" - for Orion MV88F6183 SoC

drivers/clk/mvebu/orion.c

+70 −0

Original line number	Diff line number	Diff line
		@@ -20,6 +20,76 @@ static const struct coreclk_ratio orion_coreclk_ratios[] __initconst = {
		{ .id = 0, .name = "ddrclk", }
		};

		/*
		* Orion 5181
		*/

		#define SAR_MV88F5181_TCLK_FREQ 8
		#define SAR_MV88F5181_TCLK_FREQ_MASK 0x3

		static u32 __init mv88f5181_get_tclk_freq(void __iomem *sar)
		{
		u32 opt = (readl(sar) >> SAR_MV88F5181_TCLK_FREQ) &
		SAR_MV88F5181_TCLK_FREQ_MASK;
		if (opt == 0)
		return 133333333;
		else if (opt == 1)
		return 150000000;
		else if (opt == 2)
		return 166666667;
		else
		return 0;
		}

		#define SAR_MV88F5181_CPU_FREQ 4
		#define SAR_MV88F5181_CPU_FREQ_MASK 0xf

		static u32 __init mv88f5181_get_cpu_freq(void __iomem *sar)
		{
		u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
		SAR_MV88F5181_CPU_FREQ_MASK;
		if (opt == 0)
		return 333333333;
		else if (opt == 1 \|\| opt == 2)
		return 400000000;
		else if (opt == 3)
		return 500000000;
		else
		return 0;
		}

		static void __init mv88f5181_get_clk_ratio(void __iomem *sar, int id,
		int mult, int div)
		{
		u32 opt = (readl(sar) >> SAR_MV88F5181_CPU_FREQ) &
		SAR_MV88F5181_CPU_FREQ_MASK;
		if (opt == 0 \|\| opt == 1) {
		*mult = 1;
		*div = 2;
		} else if (opt == 2 \|\| opt == 3) {
		*mult = 1;
		*div = 3;
		} else {
		*mult = 0;
		*div = 1;
		}
		}

		static const struct coreclk_soc_desc mv88f5181_coreclks = {
		.get_tclk_freq = mv88f5181_get_tclk_freq,
		.get_cpu_freq = mv88f5181_get_cpu_freq,
		.get_clk_ratio = mv88f5181_get_clk_ratio,
		.ratios = orion_coreclk_ratios,
		.num_ratios = ARRAY_SIZE(orion_coreclk_ratios),
		};

		static void __init mv88f5181_clk_init(struct device_node *np)
		{
		return mvebu_coreclk_setup(np, &mv88f5181_coreclks);
		}

		CLK_OF_DECLARE(mv88f5181_clk, "marvell,mv88f5181-core-clock", mv88f5181_clk_init);

		/*
		* Orion 5182
		*/

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