1 files changed, 16 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/rtc/rtc-opal.txt b/Documentation/devicetree/bindings/rtc/rtc-opal.txt
new file mode 100644
index 000000000000..af87e5ecac54
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-opal.txt
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+IBM OPAL real-time clock
+------------------------
+
+Required properties:
+- comapatible: Should be "ibm,opal-rtc"
+
+Optional properties:
+- has-tpo: Decides if the wakeup is supported or not.
+
+Example:
+        rtc {
+                compatible = "ibm,opal-rtc";
+                has-tpo;
+                phandle = <0x10000029>;
+                linux,phandle = <0x10000029>;
+        };