[PATCH V2 5/6] regulator: add mxs on-chip regulator driver

[Stefan Wahren]

> Mark Brown <broonie at kernel.org> hat am 7. Mai 2015 um 21:32 geschrieben:
>
>
> On Thu, May 07, 2015 at 09:25:19PM +0200, Stefan Wahren wrote:
> > > Mark Brown <broonie at kernel.org> hat am 7. Mai 2015 um 20:52 geschrieben:
>
> > > > In the bootloader code enabling the DC-DC is critical. There is a known
> > > > issue
> > > > which falsely triggers the brownout detection.
>
> > > Why would the driver not provide these operations?
>
> > I didn't implement this operation because the suggested workaround for the
> > hardware issue isn't very nice
> > (disable brownout detection during enabling DC-DC). I was afraid of the
> > implementation.
>
> That doesn't sound too complicated?
>

Okay, i think i managed the brownout handling.

Unfortunately i'm stuck at the next step. The DC-DC (3 way output) can supply 3
LDOs vddd, vdda, vddio. In case of a DC-DC state change the 3 regulators needs
to be reconfigured before.

I tought of REGULATOR_EVENT_PRE_DISABLE and REGULATOR_EVENT_PRE_ENABLE events,
but i'm not sure that's the right way to achieve a synchronization between DC-DC
and consuming LDOs.