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Commit a4b7aef6 authored by René Moll's avatar René Moll Committed by Sebastian Reichel
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Documentation: DT: Add LTC2952 poweroff bindings 



LTC2952 is an external power control chip, which signals
the OS to shut down. This patch documents the DT binding
for the chip.

Signed-off-by: default avatarRené Moll <rene.moll@xsens.com>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent 6647156c

Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt

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Binding for the LTC2952 PowerPath controller



This chip is used to externally trigger a system shut down. Once the trigger has

been sent, the chips' watchdog has to be reset to gracefully shut down.

If the Linux systems decides to shut down it powers off the platform via the

kill signal.



Required properties:



- compatible:		Must contain: "lltc,ltc2952"

- trigger-gpios:	phandle + gpio-specifier for the GPIO connected to the

			chip's trigger line

- watchdog-gpios:	phandle + gpio-specifier for the GPIO connected to the

			chip's watchdog line

- kill-gpios:		phandle + gpio-specifier for the GPIO connected to the

			chip's kill line



Example:



ltc2952 {

	compatible = "lltc,ltc2952";



	trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;

	watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;

	kill-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;

};