29 Dec
2017
29 Dec
'17
3:10 a.m.
Some questions for you:
- I think enabling micbias2 may be a problem on devices with a DMIC,
could this be a problem? Currently the codec driver itself contains quirks for dmic pin-mapping, maybe we should leave micbias2 disabled if dmic pin-mapping is specified through a quirk?
No, micbias2 and DMIC are independent and micbias2 will not be enabled if we don't add it in the audio route. So I don't think we need to disable it if dmic pin-mapping is specified.
- Do headset mics normally need a bias current? Could this be headset
dependent?
Yes, but we don't need to set specific register for that. It means you don't need to add "micbias1" in the audio route for headset mic. I think all headset mic will need a bias current.
Regards,
Hans