Kernel-4.18.0-80.el8_ac100

X-Powers AC100 Codec/RTC IC Device Tree bindings

AC100 is a audio codec and RTC subsystem combo IC. The 2 parts are
separated, including power supplies and interrupt lines, but share
a common register address space and host interface.

Required properties:

• compatible: “x-powers,ac100”

• reg: The I2C slave address or RSB hardware address for the chip

• sub-nodes:

  • codec

    • compatible: “x-powers,ac100-codec”

    • interrupt-parent: The parent interrupt controller

    • interrupts: SoC NMI / GPIO interrupt connected to the

                IRQ_AUDIO pin
      

    • #clock-cells: Shall be 0

    • clock-output-names: “4M_adda”

    • see clock/clock-bindings.txt for common clock bindings

  • rtc

    • compatible: “x-powers,ac100-rtc”

    • interrupt-parent: The parent interrupt controller

    • interrupts: SoC NMI / GPIO interrupt connected to the

                IRQ_RTC pin
      

    • clocks: A phandle to the codec’s “4M_adda” clock

    • #clock-cells: Shall be 1

    • clock-output-names: “cko1_rtc”, “cko2_rtc”, “cko3_rtc”

    • see clock/clock-bindings.txt for common clock bindings

Example:

ac100: codec@e89 {
compatible = “x-powers,ac100”;
reg = <0xe89>;

ac100_codec: codec {
    compatible = "x-powers,ac100-codec";
    interrupt-parent = <&r_pio>;
    interrupts = <0 9 IRQ_TYPE_LEVEL_LOW>; /* PL9 */
    #clock-cells = <0>;
    clock-output-names = "4M_adda";
};

ac100_rtc: rtc {
    compatible = "x-powers,ac100-rtc";
    interrupt-parent = <&nmi_intc>;
    interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
    clocks = <&ac100_codec>;
    #clock-cells = <1>;
    clock-output-names = "cko1_rtc", "cko2_rtc", "cko3_rtc";
};

};