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78 lines
2.3 KiB
Text
78 lines
2.3 KiB
Text
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Device Tree Clock bindings for arch-rockchip
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This binding uses the common clock binding[1].
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[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
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== Gate clocks ==
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These bindings are deprecated!
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Please use the soc specific CRU bindings instead.
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The gate registers form a continuos block which makes the dt node
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structure a matter of taste, as either all gates can be put into
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one gate clock spanning all registers or they can be divided into
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the 10 individual gates containing 16 clocks each.
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The code supports both approaches.
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Required properties:
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- compatible : "rockchip,rk2928-gate-clk"
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- reg : shall be the control register address(es) for the clock.
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- #clock-cells : from common clock binding; shall be set to 1
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- clock-output-names : the corresponding gate names that the clock controls
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- clocks : should contain the parent clock for each individual gate,
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therefore the number of clocks elements should match the number of
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clock-output-names
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Example using multiple gate clocks:
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clk_gates0: gate-clk@200000d0 {
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compatible = "rockchip,rk2928-gate-clk";
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reg = <0x200000d0 0x4>;
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clocks = <&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>,
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<&dummy>, <&dummy>;
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clock-output-names =
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"gate_core_periph", "gate_cpu_gpll",
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"gate_ddrphy", "gate_aclk_cpu",
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"gate_hclk_cpu", "gate_pclk_cpu",
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"gate_atclk_cpu", "gate_i2s0",
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"gate_i2s0_frac", "gate_i2s1",
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"gate_i2s1_frac", "gate_i2s2",
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"gate_i2s2_frac", "gate_spdif",
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"gate_spdif_frac", "gate_testclk";
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#clock-cells = <1>;
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};
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clk_gates1: gate-clk@200000d4 {
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compatible = "rockchip,rk2928-gate-clk";
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reg = <0x200000d4 0x4>;
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clocks = <&xin24m>, <&xin24m>,
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<&xin24m>, <&dummy>,
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<&dummy>, <&xin24m>,
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<&xin24m>, <&dummy>,
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<&xin24m>, <&dummy>,
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<&xin24m>, <&dummy>,
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<&xin24m>, <&dummy>,
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<&xin24m>, <&dummy>;
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clock-output-names =
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"gate_timer0", "gate_timer1",
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"gate_timer2", "gate_jtag",
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"gate_aclk_lcdc1_src", "gate_otgphy0",
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"gate_otgphy1", "gate_ddr_gpll",
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"gate_uart0", "gate_frac_uart0",
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"gate_uart1", "gate_frac_uart1",
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"gate_uart2", "gate_frac_uart2",
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"gate_uart3", "gate_frac_uart3";
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#clock-cells = <1>;
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};
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