[alsa-devel] [PATCH] ASoC: wm8994: Add clock bindings to the device tree

[Mark Brown]

On Thu, Jul 25, 2013 at 04:46:27PM +0100, Mark Rutland wrote:

> Do these two clock inputs exist for all of wm1811, wm8994, and wm8958?

Yes.

> If I've read the context correctly, these are optional. Does this mean
> that if not listed that an OS can assume they are already configured and
> active? It would be nice to document that.

The clocks are both optional but even if they were assumed to be present
they aren't usable without knowing the rate which can vary widely.  It
is possible that the system may be able to infer their presence and
rates from other information such as the audio system integration
compatible string but that's out of scope for this and doesn't seem like
a particularly good idea to encorage anyway.
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