On Thu, Jan 04, 2018 at 11:14:40AM +0000, Bard Liao wrote:

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I found mt8173 from mediatek is using rt5650 micbias. {"Headset Mic", NULL, "micbias1"}, {"Headset Mic", NULL, "micbias2"}, I think we should remove it but still need to verify. We are co-working with MTK folks on it and it may take some days.

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That looks like normal supply usage for a micbias so most likely your patch is a fix for them anyway.

Yes, it's supply usage for a micbias. So it didn't take effect with MICBIAS widget type. Actually, we don't need to set the micbias power bit for headset mic and we have verified it today. So, I will send a patch to remove them soon.

Are you sure that's likely to be helpful?