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Commit 0f2ecb8f authored by Frans Klaver's avatar Frans Klaver Committed by Sebastian Reichel
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power: reset: ltc2952: document optional trigger behavior 



Document the fact that the trigger signal is now optional, and describe
the behavior when this is used.

While at it, fix a typo, and paraphrase a sentence to be less platform
specific.

Signed-off-by: default avatarFrans Klaver <frans.klaver@xsens.com>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent ee181853

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

+8 −5
Original line number Original line Diff line number Diff line 
Binding for the LTC2952 PowerPath controller

Binding for the LTC2952 PowerPath controller





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

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.

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

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

A full powerdown can be triggered via the kill signal.

kill signal.





Required properties:

Required properties:





- compatible:		Must contain: "lltc,ltc2952"

- 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

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

			chip's watchdog line

			chip's watchdog line

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

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

			chip's kill line

			chip's kill line





Optional properties:

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

			chip's trigger line. If this property is not set, the

			trigger function is ignored and the chip is kept alive

			until an explicit kill signal is received



Example:

Example:





ltc2952 {

ltc2952 {