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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>;
+ };