[alsa-devel] [PATCH 1/2] ASoC: tlv320aic3x: Convert mic bias to a supply widget
gururaja.hebbar at ti.com
Thu Jan 31 06:27:26 CET 2013
On Thu, Jan 31, 2013 at 08:02:25, Mark Brown wrote:
> On Wed, Jan 30, 2013 at 06:52:35PM +0530, Hebbar Gururaja wrote:
> > Convert MicBias widgets to supply widget.
> > On tlv320aic3x, Mic bias power on/off shares the same register bits
> > with output mic bias voltage. So, when power on mic bias, we need
> > reclaim it to voltage value.
> This should update machine drivers that use the CODEC too.
Yes. I have that patch ready. Once this is accepted, I will send all
the patch as a series
> > +- ai3x-micbias-vg - MicBias Voltage required.
> > + 1 - MICBIAS output is powered to 2.0V,
> > + 2 - MICBIAS output is powered to 2.5V,
> > + 3 - MICBIAS output is connected to AVDD,
> > + If this node is not mentioned or if the value is incorrect, then MicBias
> > + is powered down.
> Would 2.0V not be a more sensible default (it is the lowest voltage so
> is unlikely to cause hardware damage if it's wrong)?
The only reason I made this choice was because none of the existing platforms
using this codec are setting the MicBias.
> Otherwise this looks good.
Ok. I will send all the patch as a series now.
More information about the Alsa-devel