[alsa-devel] [PATCH v5 1/2] ASoC: fsl: Add S/PDIF CPU DAI driver

Nicolin Chen b42378 at freescale.com
Fri Aug 16 12:16:18 CEST 2013

On Fri, Aug 16, 2013 at 12:11:51PM +0200, Sascha Hauer wrote:
> > Some clocks are not from CCM and we haven't defined in imx6q-clk.txt,
> > so in most cases we can't provide a phandle for them, eg: spdif_ext.
> > I think it's a bit hard to force it to be 'required'. An 'optional'
> > looks more flexible to me and a default one is ensured even if it's
> > missing.
> <&clks 0> is the dummy clock. This can be used for all input clocks not
> defined by the SoC.

That's feasible, thank you.

> spdif_ext would be a fixed clock on boards which provide it, but wiring
> this up would be the job of the board maintainer.


> Look, it's really simple. Define the binding in a way that describes the
> hardware. Then use some sensible default in the driver for which clock
> to use. This doesn't have to cover all possible usecases, it only has
> to work. This is all that is necessary to get this driver mainline and
> will make most users happy. Then, later, someone might come along who
> needs more fine grained control over the clocks, but this guy is then
> able to justify *why* more control is needed.
> This is not about getting a full featured driver into mainline. Get
> a basic driver into mainline and improve it later. You'll make it
> easier for us all.

Thank you for explain all these to the despicable me.
I'll try to make myself more comfortable with rules here.

Best regards,
Nicolin Chen

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