From: Adam YH Lee <adam.yh.lee@gmail.com>
Date: Tue, 14 Jul 2015 18:17:24 +0000 (-0700)
Subject: ARM: dts: Correct audio input route & set mic bias for am335x-pepper
X-Git-Tag: omap-for-v4.2/fixes-rc2-v2^0
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9908ac3daa3da2d236b5406b95d0865ddb8b29c4;p=pandora-kernel.git

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>
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