On Tue, May 26, 2015 at 02:16:55PM +0200, Stefan Wahren wrote: > > Mark Brown <broonie@xxxxxxxxxx> hat am 7. Mai 2015 um 21:32 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. OK, that's possibly sounding a bit complicated. Is it just a case of writing some value, doing a reconfiguration and rewriting the original value or is it something more? If it's much more complicated than that then I think putting a comment in the driver explaining what the issue is would be the right step, that would address the issue with the driver looking strange.
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