Re: [alsa-devel] [RFC PATCH] ASoC: wm8731: let codec to manage clock by itself

3 Feb 2015

      On Tue, Feb 3, 2015 at 1:44 PM, Mark Brown broonie@kernel.org wrote:
...
On Tue, Feb 03, 2015 at 08:54:57AM +0100, Manuel Lauss wrote:
...

wm8731->mclk = devm_clk_get(&spi->dev, "mclk");
if (IS_ERR(wm8731->mclk)) {
   wm8731->mclk = NULL;

   dev_warn(&spi->dev, "assuming static MCLK\n");

}

This is broken for both deferred probe and in the case where the clock
API genuinely returns a NULL clock.  Other than that it's the kind of
thing that we've done for some other drivers, though it's not good to
have to do this.  Check them for correct behaviour.
Hm, so the only option is to create the simples possible 12MHz clk object?
Manuel