[linux-2.6-block.git] / Documentation / devicetree / bindings / power / domain-idle-state.txt

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.
Commit	Line	Data
598da548 LI	1	PM Domain Idle State Node:
	2
	3	A domain idle state node represents the state parameters that will be used to
	4	select the state when there are no active components in the domain.
	5
	6	The state node has the following parameters -
	7
	8	- compatible:
	9	Usage: Required
	10	Value type: <string>
	11	Definition: Must be "domain-idle-state".
	12
	13	- entry-latency-us
	14	Usage: Required
	15	Value type: <prop-encoded-array>
	16	Definition: u32 value representing worst case latency in
	17	microseconds required to enter the idle state.
	18	The exit-latency-us duration may be guaranteed
	19	only after entry-latency-us has passed.
	20
	21	- exit-latency-us
	22	Usage: Required
	23	Value type: <prop-encoded-array>
	24	Definition: u32 value representing worst case latency
	25	in microseconds required to exit the idle state.
	26
	27	- min-residency-us
	28	Usage: Required
	29	Value type: <prop-encoded-array>
	30	Definition: u32 value representing minimum residency duration
	31	in microseconds after which the idle state will yield
	32	power benefits after overcoming the overhead in entering
	33	i the idle state.