[alsa-devel] [PATCH 2/2] ASoC: rt1011: ADCDAT pin config modification

[Mark Brown]

On Wed, Aug 28, 2019 at 11:01:21AM +0000, Shuming [范書銘] wrote:

> > > ADCDAT pin config sets to output mode in default.
> > > And the driver creates the kcontrol to control ADCDAT pin configuration.

> > Why would this change at runtime?  I'd expect this to be controlled by the
> > machine driver or a DT property.

> It will not change at runtime in the normal case. 
> I think we may use it to test the feedback signal in factory mode.

So really this is setting up a loopback for testing?
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