1*4882a593SmuzhiyunSpreadtrum SC27xx Power Management Integrated Circuit (PMIC) 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunThe Spreadtrum SC27xx series PMICs contain SC2720, SC2721, SC2723, SC2730 4*4882a593Smuzhiyunand SC2731. The Spreadtrum PMIC belonging to SC27xx series integrates all 5*4882a593Smuzhiyunmobile handset power management, audio codec, battery management and user 6*4882a593Smuzhiyuninterface support function in a single chip. It has 6 major functional 7*4882a593Smuzhiyunblocks: 8*4882a593Smuzhiyun- DCDCs to support CPU, memory. 9*4882a593Smuzhiyun- LDOs to support both internal and external requirement. 10*4882a593Smuzhiyun- Battery management system, such as charger, fuel gauge. 11*4882a593Smuzhiyun- Audio codec. 12*4882a593Smuzhiyun- User interface function, such as indicator, flash LED and so on. 13*4882a593Smuzhiyun- IC level interface, such as power on/off control, RTC and typec and so on. 14*4882a593Smuzhiyun 15*4882a593SmuzhiyunRequired properties: 16*4882a593Smuzhiyun- compatible: Should be one of the following: 17*4882a593Smuzhiyun "sprd,sc2720" 18*4882a593Smuzhiyun "sprd,sc2721" 19*4882a593Smuzhiyun "sprd,sc2723" 20*4882a593Smuzhiyun "sprd,sc2730" 21*4882a593Smuzhiyun "sprd,sc2731" 22*4882a593Smuzhiyun- reg: The address of the device chip select, should be 0. 23*4882a593Smuzhiyun- spi-max-frequency: Typically set to 26000000. 24*4882a593Smuzhiyun- interrupts: The interrupt line the device is connected to. 25*4882a593Smuzhiyun- interrupt-controller: Marks the device node as an interrupt controller. 26*4882a593Smuzhiyun- #interrupt-cells: The number of cells to describe an PMIC IRQ, must be 2. 27*4882a593Smuzhiyun- #address-cells: Child device offset number of cells, must be 1. 28*4882a593Smuzhiyun- #size-cells: Child device size number of cells, must be 0. 29*4882a593Smuzhiyun 30*4882a593SmuzhiyunExample: 31*4882a593Smuzhiyunpmic@0 { 32*4882a593Smuzhiyun compatible = "sprd,sc2731"; 33*4882a593Smuzhiyun reg = <0>; 34*4882a593Smuzhiyun spi-max-frequency = <26000000>; 35*4882a593Smuzhiyun interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; 36*4882a593Smuzhiyun interrupt-controller; 37*4882a593Smuzhiyun #interrupt-cells = <2>; 38*4882a593Smuzhiyun #address-cells = <1>; 39*4882a593Smuzhiyun #size-cells = <0>; 40*4882a593Smuzhiyun}; 41