[alsa-devel] omap4-droid4: voice call support was Re: [PATCHv5, 5/5] ARM: dts: omap4-droid4: add soundcard

[Mark Brown]

On Mon, Mar 26, 2018 at 05:58:28PM +0200, Sebastian Reichel wrote:

> My understanding is, that we only need to replace the audio-graph-card
> driver to something more complex. The VOICE DAI needs to be configured
> differently based on the use case:

No, this is exactly the sort of use case with multiple DAIs that the
graph card is intended to enable over the old simple-card.

> "audio-graph-card" is not capable of doing this. I was planning to
> try "audio-graph-scu-card" in combination with adding codecs for the
> modem and BT to DT. If that does not work we need a Droid 4 specific
> soundcard driver.

That's just the audio graph card with some hacks for working with a DPCM
based SoC driver set.
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