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| author | Frans Klaver | 2015-01-14 09:15:46 +0100 |
|---|---|---|
| committer | Sebastian Reichel | 2015-01-20 13:58:31 +0100 |
| commit | 0f2ecb8fa29a0bcda8385bc2277d83e3aeaa2b75 (patch) | |
| tree | 2341841aa6240a4688240a7edd63bbe2ae720264 | |
| parent | power: reset: ltc2952: make trigger input optional (diff) | |
| download | kernel-qcow2-linux-0f2ecb8fa29a0bcda8385bc2277d83e3aeaa2b75.tar.gz kernel-qcow2-linux-0f2ecb8fa29a0bcda8385bc2277d83e3aeaa2b75.tar.xz kernel-qcow2-linux-0f2ecb8fa29a0bcda8385bc2277d83e3aeaa2b75.zip | |
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: Frans Klaver <frans.klaver@xsens.com>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt index 0c94c637f63b..cd2d7f58a9d7 100644 --- a/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt +++ b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt @@ -1,20 +1,23 @@ 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. +been sent, the chip's watchdog has to be reset to gracefully shut down. +A full powerdown can be triggered 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 +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: ltc2952 { |