On Tue, Jul 14, 2015 at 11:17 AM, Adam YH Lee <adam.yh.lee@xxxxxxxxx> wrote: > 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@xxxxxxxxx> > --- > arch/arm/boot/dts/am335x-pepper.dts | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/arm/boot/dts/am335x-pepper.dts b/arch/arm/boot/dts/am335x-pepper.dts > index d627dc6..73b4cc3 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 { > @@ -152,7 +153,7 @@ > ti,audio-routing = > "Headphone Jack", "HPLOUT", > "Headphone Jack", "HPROUT", > - "LINE1L", "Line In"; > + "MIC3L", "Mic3L Switch"; > }; > > &mcasp0 { Note, this is getting resent to correct the sign-offs as requested https://lkml.org/lkml/2015/7/14/56 Acked-by: Ash Charles <ashcharles@xxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html