Re: [PATCH 4/4] ASoC: wm8904: add DMIC support

[Mark Brown]

On Mon, Jun 20, 2022 at 02:49:51PM +0000, Pierluigi Passaro wrote:

> > > +static const char *cin_text[] = {
> > > +     "ADC", "DMIC"
> > > +};

> > > +static SOC_ENUM_SINGLE_DECL(cin_enum,
> > > +                         WM8904_DIGITAL_MICROPHONE_0, 12, cin_text);

> > Why would this be runtime selectable?  I'd expect the decision to use
> > an analogue or digital microphone to be made in the hardware design.

> I agree that dedicated HW is required, but currently SW side there's no support at all.
> This patch is aiming to provide a way to enable DMIC on boards using it.
> Is this supposed to be managed in a different way ?

Via firmware description.

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