ARM: dts: Correct audio input route & set mic bias for am335x-pepper
authorAdam YH Lee <adam.yh.lee@gmail.com>
Tue, 14 Jul 2015 18:17:24 +0000 (11:17 -0700)
committerTony Lindgren <tony@atomide.com>
Wed, 15 Jul 2015 10:03:01 +0000 (03:03 -0700)
commit9908ac3daa3da2d236b5406b95d0865ddb8b29c4
tree55946a3bacaa2835b7f741d10488c6444f6a79c9
parentf87d089d4469d05f565c8ce350b6631b14c4fff8
ARM: dts: Correct audio input route & set mic bias for am335x-pepper

Audio-in was incorrectly routed to Line In. It should be Mic3L as per
schematic.

Using mic-bias voltage at 2.0v (<0x1>) does not work for some reason. There
is no voltage seen on micbias (R127). Mic-bias voltage of 2.5v (<0x2>) works.
I see voltage of 2.475v across GND and micbias.

With these changes, I can record audio with a pair of proliferate TRRS earbuds.

Signed-off-by: Adam YH Lee <adam.yh.lee@gmail.com>
Acked-by: Ash Charles <ashcharles@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
arch/arm/boot/dts/am335x-pepper.dts