On Fri, Sep 19, 2014 at 10:52:06AM -0700, Nicolin Chen wrote:

> This looks like a DPCM (Documentation/sound/alsa/soc/DPCM.txt) to me.

> I'm not sure how to write a DT for DPCM either. But it seems that you
> might need a specific machine driver (guessing).

> I saw Morimoto-san plans to add DPCM into Simple Card, but not sure
> when they will finish it. Otherwise, you may use Simple Card while
> following their defined DT formats.

Depending on what the system looks like it's not at all clear that there
should be any visibility at all of DPCM in the DT - it's a detail of how
Linux is implemented at the end of the day.