1*c66ec88fSEmmanuel VadotSpreadtrum SC27xx Power Management Integrated Circuit (PMIC) 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel VadotThe Spreadtrum SC27xx series PMICs contain SC2720, SC2721, SC2723, SC2730 4*c66ec88fSEmmanuel Vadotand SC2731. The Spreadtrum PMIC belonging to SC27xx series integrates all 5*c66ec88fSEmmanuel Vadotmobile handset power management, audio codec, battery management and user 6*c66ec88fSEmmanuel Vadotinterface support function in a single chip. It has 6 major functional 7*c66ec88fSEmmanuel Vadotblocks: 8*c66ec88fSEmmanuel Vadot- DCDCs to support CPU, memory. 9*c66ec88fSEmmanuel Vadot- LDOs to support both internal and external requirement. 10*c66ec88fSEmmanuel Vadot- Battery management system, such as charger, fuel gauge. 11*c66ec88fSEmmanuel Vadot- Audio codec. 12*c66ec88fSEmmanuel Vadot- User interface function, such as indicator, flash LED and so on. 13*c66ec88fSEmmanuel Vadot- IC level interface, such as power on/off control, RTC and typec and so on. 14*c66ec88fSEmmanuel Vadot 15*c66ec88fSEmmanuel VadotRequired properties: 16*c66ec88fSEmmanuel Vadot- compatible: Should be one of the following: 17*c66ec88fSEmmanuel Vadot "sprd,sc2720" 18*c66ec88fSEmmanuel Vadot "sprd,sc2721" 19*c66ec88fSEmmanuel Vadot "sprd,sc2723" 20*c66ec88fSEmmanuel Vadot "sprd,sc2730" 21*c66ec88fSEmmanuel Vadot "sprd,sc2731" 22*c66ec88fSEmmanuel Vadot- reg: The address of the device chip select, should be 0. 23*c66ec88fSEmmanuel Vadot- spi-max-frequency: Typically set to 26000000. 24*c66ec88fSEmmanuel Vadot- interrupts: The interrupt line the device is connected to. 25*c66ec88fSEmmanuel Vadot- interrupt-controller: Marks the device node as an interrupt controller. 26*c66ec88fSEmmanuel Vadot- #interrupt-cells: The number of cells to describe an PMIC IRQ, must be 2. 27*c66ec88fSEmmanuel Vadot- #address-cells: Child device offset number of cells, must be 1. 28*c66ec88fSEmmanuel Vadot- #size-cells: Child device size number of cells, must be 0. 29*c66ec88fSEmmanuel Vadot 30*c66ec88fSEmmanuel VadotExample: 31*c66ec88fSEmmanuel Vadotpmic@0 { 32*c66ec88fSEmmanuel Vadot compatible = "sprd,sc2731"; 33*c66ec88fSEmmanuel Vadot reg = <0>; 34*c66ec88fSEmmanuel Vadot spi-max-frequency = <26000000>; 35*c66ec88fSEmmanuel Vadot interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; 36*c66ec88fSEmmanuel Vadot interrupt-controller; 37*c66ec88fSEmmanuel Vadot #interrupt-cells = <2>; 38*c66ec88fSEmmanuel Vadot #address-cells = <1>; 39*c66ec88fSEmmanuel Vadot #size-cells = <0>; 40*c66ec88fSEmmanuel Vadot}; 41