Messages in this thread | | | Date | Thu, 18 Aug 2022 15:19:37 -0700 | Subject | Re: [PATCH] arm64: dts: qcom: sc7180: Add sleep state for alc5682 codec | From | "Joseph S. Barrera III" <> |
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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?
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