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+PM Domain Idle State Node:
+
+A domain idle state node represents the state parameters that will be used to
+select the state when there are no active components in the domain.
+
+The state node has the following parameters -
+
+- compatible:
+ Usage: Required
+ Value type: <string>
+ Definition: Must be "domain-idle-state".
+
+- entry-latency-us
+ Usage: Required
+ Value type: <prop-encoded-array>
+ Definition: u32 value representing worst case latency in
+ microseconds required to enter the idle state.
+ The exit-latency-us duration may be guaranteed
+ only after entry-latency-us has passed.
+
+- exit-latency-us
+ Usage: Required
+ Value type: <prop-encoded-array>
+ Definition: u32 value representing worst case latency
+ in microseconds required to exit the idle state.
+
+- min-residency-us
+ Usage: Required
+ Value type: <prop-encoded-array>
+ Definition: u32 value representing minimum residency duration
+ in microseconds after which the idle state will yield
+ power benefits after overcoming the overhead in entering
+i the idle state.