# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/power/supply/sc27xx-fg.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Spreadtrum SC27XX PMICs Fuel Gauge Unit Power Supply
maintainers:
- Sebastian Reichel <sre@kernel.org>
allOf:
- $ref: power-supply.yaml#
properties:
compatible:
enum:
- sprd,sc2720-fgu
- sprd,sc2721-fgu
- sprd,sc2723-fgu
- sprd,sc2730-fgu
- sprd,sc2731-fgu
reg:
maxItems: 1
battery-detect-gpios:
maxItems: 1
io-channels:
items:
- description: Battery Temperature ADC
- description: Battery Charge Voltage ADC
io-channel-names:
items:
- const: bat-temp
- const: charge-vol
nvmem-cells:
maxItems: 1
description: Calibration cells provided by eFuse device
nvmem-cell-names:
const: fgu_calib
sprd,calib-resistance-micro-ohms:
description: real resistance of coulomb counter chip in micro Ohms
monitored-battery: true
required:
- compatible
- reg
- battery-detect-gpios
- io-channels
- io-channel-names
- nvmem-cells
- nvmem-cell-names
- sprd,calib-resistance-micro-ohms
- monitored-battery
additionalProperties: false
examples:
- |
#include <dt-bindings/gpio/gpio.h>
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>;
// ...
};
pmic {
#address-cells = <1>;
#size-cells = <0>;
battery@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>;
};
};