On Tuesday 16 August 2011 15:33:09 Maximilian Schwerin wrote:
> Hi,
>
> I'm currently working on a beagle board clone.
>
> I've got some problems getting the micbias1 output on the TPS65950 to work.
> I can record audio coming from a line out or if I connect micbias1 to an
> extern 1.8V supply.
>
> /sys/devices/platform/soc-audio/TWL4030/dapm_widget shows Mic Bias 1 to be
> off at all times. Is there something I have to do to enable this other than
> to start recording? Or could this be a bug in the driver? Does anyone have
> experience with the mic input of the TPS65950?
In your machine driver you need to connect the corresponding mic bias, like it
is done in for example for zoom2:
/* Headset Mic: HSMIC with bias */
{"HSMIC", NULL, "Headset Mic Bias"},
{"Headset Mic Bias", NULL, "Headset Mic"},
Note: Beagle only have support for line-in, does your board have additional
inputs jack (Headset?)
--
Péter
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