From mboxrd@z Thu Jan  1 00:00:00 1970
From: Kuninori Morimoto <kuninori.morimoto.gx-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [alsa-devel] [PATCH 8/8] ASoC: add snd-soc-dummy DT support
Date: Thu, 28 Aug 2014 03:41:22 -0700 (PDT)
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To: Lars-Peter Clausen <lars-Qo5EllUWu/uELgA04lAiVw@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Linux-ALSA <alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org>, Kuninori Morimoto <kuninori.morimoto.gx-zM6kxYcvzFBBDgjK7y7TUQ@public.gmane.org>, Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Simon <horms-/R6kz+dDXgpPR4JQBCEnsQ@public.gmane.org>
List-Id: devicetree@vger.kernel.org


Hi Lars

> > The reason why I'm tring to support DPCM on simple-card is "sampling rate convert".
> > My rcar_sound can convert sampling rate, and I tried to add this feature as
> > rcar_sound property.
> > But, Mark rejected and requests me to use DPCM for it,
> > since it can be common featrue.
> > Current existing simple-card can't use it, and I'm tring.
> > But, am I misunderstanding ?
> 
> Is the sample rate converter a extra module, or is the sample rate converter 
> just a feature of the I2S core?

Does this "I2S core" = CPU ?
Then, it is CPU's feature.
The image is like this

  48kHz   --->      48kHz
  44.1kHz ---> [CPU] ---> [codec]
  96kHz   --->

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