[PATCH V2] arm:DTS Correct audio input route & set mic bias

[PATCH V2] arm:DTS Correct audio input route & set mic bias

[Adam YH Lee]

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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
---
 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 {
-- 
2.1.4

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Re: [PATCH V2] arm:DTS Correct audio input route & set mic bias

[Ash Charles]

On Tue, Jul 14, 2015 at 11:17 AM, Adam YH Lee <adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
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Re: [PATCH V2] arm:DTS Correct audio input route & set mic bias

[Tony Lindgren]

* Ash Charles <ashcharles-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> [150714 11:41]:
> On Tue, Jul 14, 2015 at 11:17 AM, Adam YH Lee <adam.yh.lee-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> 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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> > ---
> >  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-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

Thanks applying into omap-for-v4.2/fixes.

Tony
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