From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: Re: [PATCH] [v2] ASoC: support all possible sample
 rates in the WM8776 driver
Date: Fri, 16 Sep 2011 17:28:50 +0100
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To: Lars-Peter Clausen <lars@metafoo.de>
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On Fri, Sep 16, 2011 at 06:27:14PM +0200, Lars-Peter Clausen wrote:

> You mentioned in an earlyer mail that you can switch the sysclk rate at
> runtime. So setting the constraints based on the current sysclk rate won't
> really work. I think you need some mechanism to specify the supported rates on
> a per machine driver basis.

Yes, exactly.  It's not something the CODEC driver can do.