Hello!
There is a SND_SOC_DAPM_MICBIAS definition for the codec MICBIAS in the driver. To enable this, you would typically add a route to enable it when recording. So if you have the following routing …
nvidia,audio-routing =
"z Headphone", "z LOL",
"z Headphone", "z LOR",
"z IN1_L", "z Mic",
"z IN1_R", "z Mic";
Then update as follows …
nvidia,audio-routing =
"z Headphone", "z LOL",
"z Headphone", "z LOR",
"z Mic Bias", "z Mic",
"z IN1_L", "z Mic",
"z IN1_R", "z Mic";
Regards
Jon