[alsa-devel] wm8974 and sam9g45 atmel

[Mark Brown]

On Thu, Jun 09, 2011 at 05:11:48PM +0200, Michele Da Rold wrote:
> Hello everybody, I'm starting a new development with a Atmel SAM9G45 and 
> a WM8974.

Please always CC maintainers on mails - traffic on the mailing list is
easily lost.

> I'm using kernel 2.6.33.2

This kernel is *very* old - I would strongly recommend updating to a
more current kernel if you're looking for support.

> Putting some dedug messagge the driver not call the function 
> "set_bias_level", and call the mute function with mute=0.
> Testing the MCLK signal I not see any clock on pin because I never call 
> clk_enable!!

Have you routed audio from the DAI to an output using the ALSA controls?
If you haven't connected an output path up then the kernel won't power
anything on.