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SubjectRe: [PATCH v3 01/11] regulator: core: add API to get voltage constraints
On Wed, Feb 07, 2018 at 05:20:45PM +0200, Peter De Schrijver wrote:
> On Wed, Feb 07, 2018 at 03:01:55PM +0000, Mark Brown wrote:

> > I can't really tell what you're saying here. If the driver needs to
> > know if it can set the a given voltage there's already an API for doing
> > that as I said. If you're trying to convey this minimum and maximum
> > voltage via the constraints that sounds like an abuse of the constraints.

> No, what I want is the voltage which the regulator will output for a given
> regulator_set_voltage request taking constraints, regulator step etc into
> account.

Knowing the range of the constaints is going to tell you nothing useful
about that, it has zero information on steps or anything. The way to
find out what voltages can be set is to enumerate the voltages that can
be set through the existing API and then if you want to set a specific
voltage that you've confirmed is available you can set exactly that
voltage via the normal voltage setting interface, no need to provide a
range.
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