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The Allwinner A23 SoC has a PRCM unit like the previous A31 SoC. The differences are the AR100 clock can no longer be modified, the APB0 clock has different divisors, and some clock gates are gone. This patch adds a compatible with a modified subdevice list for the A23. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
60 lines
1.5 KiB
Plaintext
60 lines
1.5 KiB
Plaintext
* Allwinner PRCM (Power/Reset/Clock Management) Multi-Functional Device
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PRCM is an MFD device exposing several Power Management related devices
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(like clks and reset controllers).
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Required properties:
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- compatible: "allwinner,sun6i-a31-prcm" or "allwinner,sun8i-a23-prcm"
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- reg: The PRCM registers range
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The prcm node may contain several subdevices definitions:
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- see Documentation/devicetree/clk/sunxi.txt for clock devices
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- see Documentation/devicetree/reset/allwinner,sunxi-clock-reset.txt for reset
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controller devices
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Example:
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prcm: prcm@01f01400 {
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compatible = "allwinner,sun6i-a31-prcm";
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reg = <0x01f01400 0x200>;
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/* Put subdevices here */
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ar100: ar100_clk {
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compatible = "allwinner,sun6i-a31-ar100-clk";
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#clock-cells = <0>;
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clocks = <&osc32k>, <&osc24M>, <&pll6>, <&pll6>;
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};
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ahb0: ahb0_clk {
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compatible = "fixed-factor-clock";
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#clock-cells = <0>;
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clock-div = <1>;
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clock-mult = <1>;
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clocks = <&ar100_div>;
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clock-output-names = "ahb0";
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};
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apb0: apb0_clk {
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compatible = "allwinner,sun6i-a31-apb0-clk";
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#clock-cells = <0>;
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clocks = <&ahb0>;
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clock-output-names = "apb0";
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};
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apb0_gates: apb0_gates_clk {
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compatible = "allwinner,sun6i-a31-apb0-gates-clk";
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#clock-cells = <1>;
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clocks = <&apb0>;
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clock-output-names = "apb0_pio", "apb0_ir",
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"apb0_timer01", "apb0_p2wi",
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"apb0_uart", "apb0_1wire",
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"apb0_i2c";
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};
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apb0_rst: apb0_rst {
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compatible = "allwinner,sun6i-a31-clock-reset";
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#reset-cells = <1>;
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};
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};
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