+       parent: power-controller@12340000 {
+               compatible = "foo,power-controller";
+               reg = <0x12340000 0x1000>;
+               #power-domain-cells = <0>;
+
+               performance_states {
+                       compatible = "domain-performance-state";
+                       pstate@1 {
+                               performance-level = <1>;
+                               domain-microvolt = <970000 975000 985000>;
+                       };
+                       pstate@2 {
+                               performance-level = <2>;
+                               domain-microvolt = <1000000 1075000 1085000>;
+                       };
+                       pstate@3 {
+                               performance-level = <3>;
+                               domain-microvolt = <1100000 1175000 1185000>;
+                       };
+               }
+       };
+