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usr / src / sys / contrib / device-tree / Bindings / power / supply /

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📁 ab8500
📄 act8945a-charger.txt(1.68 KB)
📄 axp20x_ac_power.txt(606 B)
📄 axp20x_battery.txt(530 B)
📄 axp20x_usb_power.txt(998 B)
📄 battery.txt(130 B)
📄 battery.yaml(4.79 KB)
📄 bq2415x.txt(1.38 KB)
📄 bq24190.txt(1.86 KB)
📄 bq24257.txt(2.18 KB)
📄 bq2515x.yaml(2.43 KB)
📄 bq25890.txt(2.02 KB)
📄 bq27xxx.yaml(2.3 KB)
📄 charger-manager.txt(2.3 KB)
📄 cpcap-battery.txt(1 KB)
📄 cpcap-charger.txt(1.34 KB)
📄 cw2015_battery.yaml(2.38 KB)
📄 da9150-charger.txt(680 B)
📄 da9150-fg.txt(681 B)
📄 gpio-charger.txt(760 B)
📄 gpio-charger.yaml(1.48 KB)
📄 ingenic,battery.txt(930 B)
📄 isp1704.txt(457 B)
📄 lego_ev3_battery.txt(719 B)
📄 lp8727_charger.txt(1.04 KB)
📄 lt3651-charger.txt(1.13 KB)
📄 ltc2941.txt(1.22 KB)
📄 max17040_battery.txt(1.04 KB)
📄 max17042_battery.txt(1.11 KB)
📄 max77650-charger.yaml(992 B)
📄 max8903-charger.txt(858 B)
📄 max8925_battery.txt(480 B)
📄 maxim,ds2760.txt(990 B)
📄 maxim,max14656.txt(472 B)
📄 microchip,ucs1002.txt(805 B)
📄 olpc_battery.txt(108 B)
📄 power-supply.yaml(937 B)
📄 power_supply.txt(88 B)
📄 qcom,coincell-charger.txt(1.14 KB)
📄 qcom_smbb.txt(5.71 KB)
📄 rohm,bd99954.yaml(5.96 KB)
📄 rt9455_charger.txt(1.72 KB)
📄 rx51-battery.txt(772 B)
📄 sbs,sbs-battery.yaml(2.04 KB)
📄 sbs,sbs-manager.txt(1.84 KB)
📄 sbs_sbs-charger.txt(595 B)
📄 sc2731_charger.txt(1.08 KB)
📄 sc27xx-fg.txt(1.96 KB)
📄 ti,bq24735.txt(1.8 KB)
📄 tps65090.txt(397 B)
📄 tps65217_charger.txt(450 B)
📄 twl-charger.txt(905 B)

Editing: sc27xx-fg.txt

Spreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply Bindings

Required properties:
- compatible: Should be one of the following:
  "sprd,sc2720-fgu",
  "sprd,sc2721-fgu",
  "sprd,sc2723-fgu",
  "sprd,sc2730-fgu",
  "sprd,sc2731-fgu".
- reg: The address offset of fuel gauge unit.
- battery-detect-gpios: GPIO for battery detection.
- io-channels: Specify the IIO ADC channels to get temperature and charge voltage.
- io-channel-names: Should be "bat-temp" or "charge-vol".
- nvmem-cells: A phandle to the calibration cells provided by eFuse device.
- nvmem-cell-names: Should be "fgu_calib".
- sprd,calib-resistance-micro-ohms: Specify the real resistance of coulomb counter
  chip in micro Ohms.
- monitored-battery: Phandle of battery characteristics devicetree node.
  See Documentation/devicetree/bindings/power/supply/battery.txt

Example:

bat: battery {
		compatible = "simple-battery";
		charge-full-design-microamp-hours = <1900000>;
		constant-charge-voltage-max-microvolt = <4350000>;
		ocv-capacity-celsius = <20>;
		ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>,
					<4022000 85>, <3983000 80>, <3949000 75>,
					<3917000 70>, <3889000 65>, <3864000 60>,
					<3835000 55>, <3805000 50>, <3787000 45>,
					<3777000 40>, <3773000 35>, <3770000 30>,
					<3765000 25>, <3752000 20>, <3724000 15>,
					<3680000 10>, <3605000 5>, <3400000 0>;
		......
	};

sc2731_pmic: pmic@0 {
		compatible = "sprd,sc2731";
		reg = <0>;
		spi-max-frequency = <26000000>;
		interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>;
		interrupt-controller;
		#interrupt-cells = <2>;
		#address-cells = <1>;
		#size-cells = <0>;

fgu@a00 {
			compatible = "sprd,sc2731-fgu";
			reg = <0xa00>;
			battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>;
			io-channels = <&pmic_adc 5>, <&pmic_adc 14>;
			io-channel-names = "bat-temp", "charge-vol";
			nvmem-cells = <&fgu_calib>;
			nvmem-cell-names = "fgu_calib";
			monitored-battery = <&bat>;
			sprd,calib-resistance-micro-ohms = <21500>;
		};
	};

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Editing: sc27xx-fg.txt

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