Re: [alsa-devel] [PATCH 8/8] ASoC: add snd-soc-dummy DT support

Hi

...

sound { compatible = "simple-audio-card"; ...

cpu {
	sound-dai = <&rcar_sound 0>;
};
codec {
	sound-dai = <&ak4643>;
};

};

(snip)

There's two separate things here. One is how the code is implemented (which does look very much like it should be doing DPCM) and the other is how the DT binding looks - the DT binding is supposed to be a hardware neutral thing and not depend on Linux implementation details. If you've already got the hardware described well enough to discover everything then that generally indicates that the DT binding should not need to change.

In my case, I need DPCM if CPU want to use "sampling rate convert", otherwise, I don't need it. So, DPCM <-> non DPCM switching happen if DTS has sampling-rate-convert = <xxxxxxx> or something like that. Does my understanding correct ?