Kernel-4.18.0-80.el8_sun6i-prc

  • Allwinner PRCM (Power/Reset/Clock Management) Multi-Functional Device

PRCM is an MFD device exposing several Power Management related devices
(like clks and reset controllers).

Required properties:

  • compatible: “allwinner,sun6i-a31-prcm” or “allwinner,sun8i-a23-prcm”
  • reg: The PRCM registers range

The prcm node may contain several subdevices definitions:

  • see Documentation/devicetree/bindings/clock/sunxi.txt for clock devices
  • see Documentation/devicetree/bindings/reset/allwinner,sunxi-clock-reset.txt for reset
    controller devices

Example:

prcm: prcm@1f01400 {
    compatible = "allwinner,sun6i-a31-prcm";
    reg = <0x01f01400 0x200>;

    /* Put subdevices here */
    ar100: ar100_clk {
        compatible = "allwinner,sun6i-a31-ar100-clk";
        #clock-cells = <0>;
        clocks = <&osc32k>, <&osc24M>, <&pll6>, <&pll6>;
    };

    ahb0: ahb0_clk {
        compatible = "fixed-factor-clock";
        #clock-cells = <0>;
        clock-div = <1>;
        clock-mult = <1>;
        clocks = <&ar100_div>;
        clock-output-names = "ahb0";
    };

    apb0: apb0_clk {
        compatible = "allwinner,sun6i-a31-apb0-clk";
        #clock-cells = <0>;
        clocks = <&ahb0>;
        clock-output-names = "apb0";
    };

    apb0_gates: apb0_gates_clk {
        compatible = "allwinner,sun6i-a31-apb0-gates-clk";
        #clock-cells = <1>;
        clocks = <&apb0>;
        clock-output-names = "apb0_pio", "apb0_ir",
                "apb0_timer01", "apb0_p2wi",
                "apb0_uart", "apb0_1wire",
                "apb0_i2c";
    };

    apb0_rst: apb0_rst {
        compatible = "allwinner,sun6i-a31-clock-reset";
        #reset-cells = <1>;
    };
};