Issues with Z83-II minipc (bytcr-rt5651)

[callegar]

The proposed asound.state does not seem to provide headphone output on the Z83-II minipc. This is a cherry trail minipc that is very low cost and popular on Amazon and other similar sites. The machine has no speaker, but an headset connector. The latter seems to be of the phone type, including both stereo out and mono mic in. It is unclear to me if there is an internal microphone.

With respect to the proposed asound.state, it looks like HPO MIX DAC1, HPO L, HPO R need to be unmuted to get the headphones producing sound.

I have not been able to find how to enable the headphone microphone.