From: René Moll <[email protected]>
Signed-off-by: René Moll <[email protected]>
Signed-off-by: Tjerk Hofmeijer <[email protected]>
Signed-off-by: Frans Klaver <[email protected]>
---
.../bindings/power/reset/ltc2952-poweroff.txt | 31 ++++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644
Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt
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 0000000..c3f3d9e
--- /dev/null
+++ b/Documentation/devicetree/bindings/power/reset/ltc2952-poweroff.txt
@@ -0,0 +1,31 @@
+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
+poweroff signal.
+
+Required properties:
+
+- compatible: Must be: "lltc,ltc2952"
+- watchdog-gpios: phandle + gpio-specifier for the GPIO connected to the
+ chip's watchdog line
+- poweroff-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 {
+ compatible = "lltc,ltc2952";
+
+ trigger-gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
+ watchdog-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
+ poweroff-gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
+};
--
2.1.0
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