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