Re: [PATCH] arm64: dts: qcom: sc7180: Add sleep state for alc5682 codec

[Joseph S. Barrera III]

On 8/18/22 1:34 PM, Doug Anderson wrote:
> I tend to agree with Stephen's analysis. We actually need to keep the
> pullup enabled unless we are actually turning power off to the codec,
> which we don't seem to be doing.
>
> I guess I'm a little surprised that we don't even seem to turn any of
> this codec's regulators off in S3. That seems like it would be drawing
> power that we don't want. Maybe the "low power" mode of the codec is
> low enough and we need to avoid powering it off to avoid pops / hisses
> in S3 or something? If that's true, this might be one of those places
> where the "LPM" of the regulators might actually be useful...

OK, fair enough, so suggestions on what I should do instead? Should I
look at why or how to turn the regulators off? Should I look into LPM?
Are there existing bugs for such work?