1*4882a593SmuzhiyunSpreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply Bindings 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun- compatible: Should be one of the following: 5*4882a593Smuzhiyun "sprd,sc2720-fgu", 6*4882a593Smuzhiyun "sprd,sc2721-fgu", 7*4882a593Smuzhiyun "sprd,sc2723-fgu", 8*4882a593Smuzhiyun "sprd,sc2730-fgu", 9*4882a593Smuzhiyun "sprd,sc2731-fgu". 10*4882a593Smuzhiyun- reg: The address offset of fuel gauge unit. 11*4882a593Smuzhiyun- battery-detect-gpios: GPIO for battery detection. 12*4882a593Smuzhiyun- io-channels: Specify the IIO ADC channels to get temperature and charge voltage. 13*4882a593Smuzhiyun- io-channel-names: Should be "bat-temp" or "charge-vol". 14*4882a593Smuzhiyun- nvmem-cells: A phandle to the calibration cells provided by eFuse device. 15*4882a593Smuzhiyun- nvmem-cell-names: Should be "fgu_calib". 16*4882a593Smuzhiyun- sprd,calib-resistance-micro-ohms: Specify the real resistance of coulomb counter 17*4882a593Smuzhiyun chip in micro Ohms. 18*4882a593Smuzhiyun- monitored-battery: Phandle of battery characteristics devicetree node. 19*4882a593Smuzhiyun See Documentation/devicetree/bindings/power/supply/battery.txt 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunExample: 22*4882a593Smuzhiyun 23*4882a593Smuzhiyun bat: battery { 24*4882a593Smuzhiyun compatible = "simple-battery"; 25*4882a593Smuzhiyun charge-full-design-microamp-hours = <1900000>; 26*4882a593Smuzhiyun constant-charge-voltage-max-microvolt = <4350000>; 27*4882a593Smuzhiyun ocv-capacity-celsius = <20>; 28*4882a593Smuzhiyun ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, 29*4882a593Smuzhiyun <4022000 85>, <3983000 80>, <3949000 75>, 30*4882a593Smuzhiyun <3917000 70>, <3889000 65>, <3864000 60>, 31*4882a593Smuzhiyun <3835000 55>, <3805000 50>, <3787000 45>, 32*4882a593Smuzhiyun <3777000 40>, <3773000 35>, <3770000 30>, 33*4882a593Smuzhiyun <3765000 25>, <3752000 20>, <3724000 15>, 34*4882a593Smuzhiyun <3680000 10>, <3605000 5>, <3400000 0>; 35*4882a593Smuzhiyun ...... 36*4882a593Smuzhiyun }; 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun sc2731_pmic: pmic@0 { 39*4882a593Smuzhiyun compatible = "sprd,sc2731"; 40*4882a593Smuzhiyun reg = <0>; 41*4882a593Smuzhiyun spi-max-frequency = <26000000>; 42*4882a593Smuzhiyun interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; 43*4882a593Smuzhiyun interrupt-controller; 44*4882a593Smuzhiyun #interrupt-cells = <2>; 45*4882a593Smuzhiyun #address-cells = <1>; 46*4882a593Smuzhiyun #size-cells = <0>; 47*4882a593Smuzhiyun 48*4882a593Smuzhiyun fgu@a00 { 49*4882a593Smuzhiyun compatible = "sprd,sc2731-fgu"; 50*4882a593Smuzhiyun reg = <0xa00>; 51*4882a593Smuzhiyun battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>; 52*4882a593Smuzhiyun io-channels = <&pmic_adc 5>, <&pmic_adc 14>; 53*4882a593Smuzhiyun io-channel-names = "bat-temp", "charge-vol"; 54*4882a593Smuzhiyun nvmem-cells = <&fgu_calib>; 55*4882a593Smuzhiyun nvmem-cell-names = "fgu_calib"; 56*4882a593Smuzhiyun monitored-battery = <&bat>; 57*4882a593Smuzhiyun sprd,calib-resistance-micro-ohms = <21500>; 58*4882a593Smuzhiyun }; 59*4882a593Smuzhiyun }; 60