On Fri, Jan 12, 2018 at 06:18:21PM +0800, Chunyan Zhang wrote:
> 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: Chunyan Zhang <zhang.chunyan@xxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/regulator/regulator.txt | 15 +++++++++++++--
> 1 file changed, 13 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
> index 378f6dc..532e286 100644
> --- a/Documentation/devicetree/bindings/regulator/regulator.txt
> +++ b/Documentation/devicetree/bindings/regulator/regulator.txt
> @@ -42,8 +42,19 @@ 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. The voltage for suspend also can be
> + adjusted among {regulator-suspend-min-microvolt,
> + regulator-suspend-max-microvolt} by calling
> + regulator_set_suspend_voltage(). This property is now deprecated,
> + setting voltage for suspend mode via API the regulator driver
> + provides is recommended.
Please reword. This is Linux implementation details that shouldn't be in
the binding.
> + - 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
> --
> 2.7.4
>
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