[alsa-devel] [PATCH v4 1/2] ASoC: fsl: Add S/PDIF CPU DAI driver

Shawn Guo shawn.guo at linaro.org
Thu Aug 15 11:24:30 CEST 2013

On Thu, Aug 15, 2013 at 10:18:23AM +0800, Nicolin Chen wrote:
> Hi Stephen,
> On Wed, Aug 14, 2013 at 09:47:19AM -0600, Stephen Warren wrote:
> > If the clock source name list is different, then it needs a different
> > compatible value, so that each compatible value can specify which clock
> > names are required.
> > 
> > Also, the compatible value itself should always include the exact HW
> > that's present (most specific HW version), as well as any other HW it's
> > compatible with.
> Thank you for the comments. Yes, I did so in v1-v3, but after rethinking
> about the situation (Actually both the HW version and the clock mux itself
> are same, just the clock sources connecting to the mux might be different),
> so I decided to do this by abstracting the driver from those source info
> and letting DT binding to pass such information. Because I think putting 
> the clock sources into the driver differed by compatible value would make
> the driver more like SoC-specified, not the ideal way -- SoC-independent,
> since the clock sources are based on SoC design, not on itself.


It's pretty much the differences at SoC integration level not the IP
itself, and it just happens to be handled in a register of the IP.


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