# SPDX-License-Identifier: GPL-2.0 %YAML 1.2 --- $id: http://devicetree.org/schemas/power/supply/lego,ev3-battery.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: LEGO MINDSTORMS EV3 Battery maintainers: - David Lechner - Sebastian Reichel description: | LEGO MINDSTORMS EV3 has some built-in capability for monitoring the battery. It uses 6 AA batteries or a special Li-ion rechargeable battery pack that is detected by a key switch in the battery compartment. allOf: - $ref: power-supply.yaml# properties: compatible: const: lego,ev3-battery io-channels: items: - description: ADC channel for battery voltage - description: ADC channel for battery current io-channel-names: items: - const: voltage - const: current rechargeable-gpios: maxItems: 1 description: Rechargeable battery indication gpio required: - compatible - io-channels - io-channel-names - rechargeable-gpios additionalProperties: false examples: - | #include battery { compatible = "lego,ev3-battery"; io-channels = <&adc 4>, <&adc 3>; io-channel-names = "voltage", "current"; rechargeable-gpios = <&gpio 136 GPIO_ACTIVE_LOW>; };