From 11ecb0d234ea7f3b33760281fd4113115c71d5f7 Mon Sep 17 00:00:00 2001 From: David Lechner Date: Tue, 11 Apr 2017 16:05:21 -0500 Subject: dt-bindings: power: supply: New bindings for LEGO MINDSTORMS EV3 battery This add a new device tree binding for LEGO MINDSTORMS EV3 battery. The EV3 has some built-in capability for monitoring the attached battery. Signed-off-by: David Lechner Acked-by: Rob Herring Signed-off-by: Sebastian Reichel --- .../bindings/power/supply/lego_ev3_battery.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/lego_ev3_battery.txt diff --git a/Documentation/devicetree/bindings/power/supply/lego_ev3_battery.txt b/Documentation/devicetree/bindings/power/supply/lego_ev3_battery.txt new file mode 100644 index 000000000000..5485633b1faa --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/lego_ev3_battery.txt @@ -0,0 +1,21 @@ +LEGO MINDSTORMS EV3 Battery +~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +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. + +Required properties: + - compatible: Must be "lego,ev3-battery" + - io-channels: phandles to analog inputs for reading voltage and current + - io-channel-names: Must be "voltage", "current" + - rechargeable-gpios: phandle to the rechargeable battery indication gpio + +Example: + + battery { + compatible = "lego,ev3-battery"; + io-channels = <&adc 4>, <&adc 3>; + io-channel-names = "voltage", "current"; + rechargeable-gpios = <&gpio 136 GPIO_ACTIVE_LOW>; + }; -- cgit