18c2ecf20Sopenharmony_ciSpreadtrum SC27xx Real Time Clock 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci- compatible: should be "sprd,sc2731-rtc". 58c2ecf20Sopenharmony_ci- reg: address offset of rtc register. 68c2ecf20Sopenharmony_ci- interrupts: rtc alarm interrupt. 78c2ecf20Sopenharmony_ci 88c2ecf20Sopenharmony_ciExample: 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci sc2731_pmic: pmic@0 { 118c2ecf20Sopenharmony_ci compatible = "sprd,sc2731"; 128c2ecf20Sopenharmony_ci reg = <0>; 138c2ecf20Sopenharmony_ci spi-max-frequency = <26000000>; 148c2ecf20Sopenharmony_ci interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; 158c2ecf20Sopenharmony_ci interrupt-controller; 168c2ecf20Sopenharmony_ci #interrupt-cells = <2>; 178c2ecf20Sopenharmony_ci #address-cells = <1>; 188c2ecf20Sopenharmony_ci #size-cells = <0>; 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ci rtc@280 { 218c2ecf20Sopenharmony_ci compatible = "sprd,sc2731-rtc"; 228c2ecf20Sopenharmony_ci reg = <0x280>; 238c2ecf20Sopenharmony_ci interrupt-parent = <&sc2731_pmic>; 248c2ecf20Sopenharmony_ci interrupts = <2 IRQ_TYPE_LEVEL_HIGH>; 258c2ecf20Sopenharmony_ci }; 268c2ecf20Sopenharmony_ci }; 27