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