Commit 0f2ecb8f authored by Frans Klaver's avatar Frans Klaver Committed by Sebastian Reichel

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
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 {
......
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