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| -rw-r--r-- | Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt new file mode 100644 index 000000000000..0c94c637f63b --- /dev/null +++ b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt @@ -0,0 +1,26 @@ +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>; +}; |