1Spreadtrum SC27xx Real Time Clock 2 3Required properties: 4- compatible: should be "sprd,sc2731-rtc". 5- reg: address offset of rtc register. 6- interrupt-parent: phandle for the interrupt controller. 7- interrupts: rtc alarm interrupt. 8 9Example: 10 11 sc2731_pmic: pmic@0 { 12 compatible = "sprd,sc2731"; 13 reg = <0>; 14 spi-max-frequency = <26000000>; 15 interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; 16 interrupt-controller; 17 #interrupt-cells = <2>; 18 #address-cells = <1>; 19 #size-cells = <0>; 20 21 rtc@280 { 22 compatible = "sprd,sc2731-rtc"; 23 reg = <0x280>; 24 interrupt-parent = <&sc2731_pmic>; 25 interrupts = <2 IRQ_TYPE_LEVEL_HIGH>; 26 }; 27 }; 28