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| author | Adam YH Lee <adam.yh.lee@gmail.com> | 2015-07-14 20:17:24 +0200 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2015-07-15 12:03:01 +0200 |
| commit | 9908ac3daa3da2d236b5406b95d0865ddb8b29c4 (patch) | |
| tree | 55946a3bacaa2835b7f741d10488c6444f6a79c9 | |
| parent | ARM: OMAP2+: Add HAVE_ARM_SCU for AM43XX (diff) | |
| download | linux-9908ac3daa3da2d236b5406b95d0865ddb8b29c4.tar.xz linux-9908ac3daa3da2d236b5406b95d0865ddb8b29c4.zip | |
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>
| -rw-r--r-- | arch/arm/boot/dts/am335x-pepper.dts | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts index 206c042a7c48..7106114c7464 100644 --- a/arch/arm/boot/dts/am335x-pepper.dts +++ b/arch/arm/boot/dts/am335x-pepper.dts @@ -74,6 +74,7 @@ audio_codec: tlv320aic3106@1b { compatible = "ti,tlv320aic3106"; reg = <0x1b>; + ai3x-micbias-vg = <0x2>; }; accel: lis331dlh@1d { @@ -153,7 +154,7 @@ ti,audio-routing = "Headphone Jack", "HPLOUT", "Headphone Jack", "HPROUT", - "LINE1L", "Line In"; + "MIC3L", "Mic3L Switch"; }; &mcasp0 { |