Hi
I m using this soundcard with a Pi Zero and Arch with an uptodate kernel.
Following the datasheet I did:
dtoverlay=hifiberry-dacplusadcpro
The card is recognized. To enable bias voltage (software side) I do:
amixer sset "ADC Mic Bias" "Mic Bias off"
This gives:
amixer: Unable to find simple control 'ADC Mic Bias',0
Thoughts on why, and how to proceed would be great.
Thank you,
Grant