Add binding for a battery that is only monitored via ADC channels and simple status GPIOs. Signed-off-by: Sebastian Reichel <sre@xxxxxxxxxx> --- .../bindings/power/supply/adc-battery.yaml | 70 +++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/adc-battery.yaml diff --git a/Documentation/devicetree/bindings/power/supply/adc-battery.yaml b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml new file mode 100644 index 000000000000..ed9702caedff --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/adc-battery.yaml @@ -0,0 +1,70 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/power/supply/adc-battery.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ADC battery + +maintainers: + - Sebastian Reichel <sre@xxxxxxxxxx> + +description: + Basic battery capacity meter, which only reports basic battery data + via ADC channels and optionally indicate that the battery is full by + polling a GPIO line. + + The voltage is expected to be measured between the battery terminals + and mandatory. The optional current/power channel is expected to + monitor the current/power flowing out of the battery. Last but not + least the temperature channel is supposed to measure the battery + temperature. + +allOf: + - $ref: power-supply.yaml# + +properties: + compatible: + const: adc-battery + + charged-gpios: + description: + GPIO which signals that the battery is fully charged. The GPIO is + often provided by charger ICs, that are not software controllable. + maxItems: 1 + + io-channels: + minItems: 1 + maxItems: 4 + + io-channel-names: + minItems: 1 + items: + - const: voltage + - enum: [ current, power, temperature ] + - enum: [ power, temperature ] + - const: temperature + + monitored-battery: true + +required: + - compatible + - io-channels + - io-channel-names + - monitored-battery + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + fuel-gauge { + compatible = "adc-battery"; + charged-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>; + io-channels = <&adc 13>, <&adc 37>; + io-channel-names = "voltage", "current"; + + power-supplies = <&charger>; + monitored-battery = <&battery>; + }; -- 2.39.2
