Kernel-4.18.0-80.el8_sprd,sc27xx-rtc

Spreadtrum SC27xx Real Time Clock

Required properties:

• compatible: should be “sprd,sc2731-rtc”.
• reg: address offset of rtc register.
• interrupt-parent: phandle for the interrupt controller.
• interrupts: rtc alarm interrupt.

Example:

sc2731_pmic: pmic@0 {
    compatible = "sprd,sc2731";
    reg = <0>;
    spi-max-frequency = <26000000>;
    interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
    interrupt-controller;
    #interrupt-cells = <2>;
    #address-cells = <1>;
    #size-cells = <0>;

    rtc@280 {
        compatible = "sprd,sc2731-rtc";
        reg = <0x280>;
        interrupt-parent = <&sc2731_pmic>;
        interrupts = <2 IRQ_TYPE_LEVEL_HIGH>;
    };
};