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Unverified Commit 057c7644 authored by Chunyan Zhang's avatar Chunyan Zhang Committed by Mark Brown
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regulator: added support for suspend states 



Some systems need to set regulators to specific states when they enter
low power modes, especially around CPUs. There are many of these modes
depending on the particular runtime state.

Currently the regulator consumers are not granted permission to change
suspend state of regulator devices, the constraints are configured at
startup.  In order to allow changes in a vlotage range, we need to add
new properties for voltage range and a flag to give permission to
change the suspend voltage and suspend on/off in suspend mode.

Signed-off-by: default avatarChunyan Zhang <zhang.chunyan@linaro.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4fbd8d19

Documentation/devicetree/bindings/regulator/regulator.txt

+10 −2
Original line number Diff line number Diff line
@@ -42,8 +42,16 @@ Optional properties: 
- regulator-state-[mem/disk] node has following common properties:

	- regulator-on-in-suspend: regulator should be on in suspend state.

	- regulator-off-in-suspend: regulator should be off in suspend state.

	- regulator-suspend-microvolt: regulator should be set to this voltage

	  in suspend.

	- regulator-suspend-min-microvolt: minimum voltage may be set in

	  suspend state.

	- regulator-suspend-max-microvolt: maximum voltage may be set in

	  suspend state.

	- regulator-suspend-microvolt: the default voltage which regulator

	  would be set in suspend. This property is now deprecated, instead

	  setting voltage for suspend mode via the API which regulator

	  driver provides is recommended.

	- regulator-changeable-in-suspend: whether the default voltage and

	  the regulator on/off in suspend can be changed in runtime.

	- regulator-mode: operating mode in the given suspend state.

	  The set of possible operating modes depends on the capabilities of

	  every hardware so the valid modes are documented on each regulator