Re: [PATCH v1 1/2] ASoC: dt-bindings: Document dmic_sel-gpios optional prop for two DMICs case

From: Mark Brown
Date: Mon Oct 31 2022 - 16:48:10 EST


On Mon, Oct 31, 2022 at 01:43:43PM -0500, Rob Herring wrote:
> On Fri, Oct 28, 2022 at 12:56:16PM +0100, Mark Brown wrote:

> > If we're going to do this we should also allow the bindings to label the
> > mics appropriately so that the control presented can reflect the actual
> > hardware. It does feel like it might fit better to do this separately
> > to the DMIC driver as a mux between the DMIC and the DAI it's connected
> > to but equally with the way things are at the minute that feels like
> > it's probably disproportionate effort.

> Are there other needs for DAI muxes? We already have a mux binding, so
> defining a DAI mux would work for any type of muxing control, not just
> GPIO.

I suspect that anything that is more complex than a GPIO should be a
full fledged CODEC with the muxing internal to the CODEC and just
described that way.

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