From: Mike Looijmans Date: Tue, 9 May 2017 05:36:30 +0000 (+0200) Subject: dt-bindings: power: supply: New bindings for ltc3651-charger X-Git-Tag: v4.13-rc1~172^2~36 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=9d556bb4ad51b2fa3ba30cda93b419b71c98ce33;p=karo-tx-linux.git dt-bindings: power: supply: New bindings for ltc3651-charger This adds the devicetree bindings documentation for the LTC3651 battery charger. Signed-off-by: Mike Looijmans Acked-by: Rob Herring Signed-off-by: Sebastian Reichel --- diff --git a/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt new file mode 100644 index 000000000000..71f2840e8209 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/ltc3651-charger.txt @@ -0,0 +1,27 @@ +ltc3651-charger + +Required properties: + - compatible: "lltc,ltc3651-charger" + - lltc,acpr-gpios: Connect to ACPR output. See remark below. + +Optional properties: + - lltc,fault-gpios: Connect to FAULT output. See remark below. + - lltc,chrg-gpios: Connect to CHRG output. See remark below. + +The ltc3651 outputs are open-drain type and active low. The driver assumes the +GPIO reports "active" when the output is asserted, so if the pins have been +connected directly, the GPIO flags should be set to active low also. + +The driver will attempt to aquire interrupts for all GPIOs to detect changes in +line state. If the system is not capabale of providing interrupts, the driver +cannot report changes and userspace will need to periodically read the sysfs +attributes to detect changes. + +Example: + + charger: battery-charger { + compatible = "lltc,ltc3651-charger"; + lltc,acpr-gpios = <&gpio0 68 GPIO_ACTIVE_LOW>; + lltc,fault-gpios = <&gpio0 64 GPIO_ACTIVE_LOW>; + lltc,chrg-gpios = <&gpio0 63 GPIO_ACTIVE_LOW>; + };