Re: [PATCH] regulator: core: Allow dummy regulators for supplies

[Dong Aisheng]

Hi Mark,

On Thu, Apr 13, 2017 at 8:20 PM, Mark Brown <broonie@xxxxxxxxxx> wrote:
> On Wed, Apr 12, 2017 at 03:33:14PM +0000, A.S. Dong wrote:
>
>> Now we allow a supply to be a dummy regulator. But due to
>> fc42112c0eaa ("regulator: core: Propagate voltage changes to supply regulators")
>> which supports propagate voltage change to supply regulator,
>> then it will certainly fail if we want to configure a dummy supply.
>>
>> I tried a quick fix as follows and test seemed ok.
>
>> -       if (rdev->supply && (rdev->desc->min_dropout_uV ||
>> +       if (rdev->supply && rdev->supply->rdev != dummy_regulator_rdev &&
>> +                               (rdev->desc->min_dropout_uV ||
>
>> Not sure if it's a sufficient fix.
>> Please help check it.
>
> Ah, of course.  That'll work but I don't think it's the best solution -
> there are some other regulators that also won't support setting voltages
> but might get used as supplies so we should do something based on the
> properties of the regulator rather than based specifically on the dummy
> regulator.  Let me see..

Yes, i was also wondering that..
Let's waiting for you...

Thanks

Regards
Dong Aisheng