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59 lines
2.0 KiB
59 lines
2.0 KiB
Spreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply Bindings |
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Required properties: |
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- compatible: Should be one of the following: |
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"sprd,sc2720-fgu", |
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"sprd,sc2721-fgu", |
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"sprd,sc2723-fgu", |
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"sprd,sc2730-fgu", |
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"sprd,sc2731-fgu". |
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- reg: The address offset of fuel gauge unit. |
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- battery-detect-gpios: GPIO for battery detection. |
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- io-channels: Specify the IIO ADC channels to get temperature and charge voltage. |
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- io-channel-names: Should be "bat-temp" or "charge-vol". |
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- nvmem-cells: A phandle to the calibration cells provided by eFuse device. |
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- nvmem-cell-names: Should be "fgu_calib". |
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- sprd,calib-resistance-micro-ohms: Specify the real resistance of coulomb counter |
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chip in micro Ohms. |
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- monitored-battery: Phandle of battery characteristics devicetree node. |
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See Documentation/devicetree/bindings/power/supply/battery.txt |
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Example: |
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bat: battery { |
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compatible = "simple-battery"; |
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charge-full-design-microamp-hours = <1900000>; |
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constant-charge-voltage-max-microvolt = <4350000>; |
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ocv-capacity-celsius = <20>; |
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ocv-capacity-table-0 = <4185000 100>, <4113000 95>, <4066000 90>, |
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<4022000 85>, <3983000 80>, <3949000 75>, |
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<3917000 70>, <3889000 65>, <3864000 60>, |
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<3835000 55>, <3805000 50>, <3787000 45>, |
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<3777000 40>, <3773000 35>, <3770000 30>, |
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<3765000 25>, <3752000 20>, <3724000 15>, |
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<3680000 10>, <3605000 5>, <3400000 0>; |
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...... |
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}; |
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sc2731_pmic: pmic@0 { |
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compatible = "sprd,sc2731"; |
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reg = <0>; |
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spi-max-frequency = <26000000>; |
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interrupts = <GIC_SPI 31 IRQ_TYPE_LEVEL_HIGH>; |
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interrupt-controller; |
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#interrupt-cells = <2>; |
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#address-cells = <1>; |
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#size-cells = <0>; |
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fgu@a00 { |
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compatible = "sprd,sc2731-fgu"; |
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reg = <0xa00>; |
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battery-detect-gpios = <&pmic_eic 9 GPIO_ACTIVE_HIGH>; |
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io-channels = <&pmic_adc 5>, <&pmic_adc 14>; |
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io-channel-names = "bat-temp", "charge-vol"; |
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nvmem-cells = <&fgu_calib>; |
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nvmem-cell-names = "fgu_calib"; |
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monitored-battery = <&bat>; |
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sprd,calib-resistance-micro-ohms = <21500>; |
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}; |
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};
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