[alsa-devel] [PATCH] ASoC: fsl: imx-wm8962: Do FLL configuration in hw_params() and hw_kree()

Mark Brown broonie at kernel.org
Thu Dec 5 12:15:08 CET 2013

On Thu, Dec 05, 2013 at 10:56:31AM +0800, Nicolin Chen wrote:

> As far as I can understand, the point that all the outputs needs the device
> to be clocked is undeniably true, but the external MCLK should be sufficient
> to source the SYSCLK of WM8962. Does the bypass mode also need to set FLL
> to get an accurate frequency?

The device is going to need a clock that's in spec to make sure that the
device performs in spec, if the device is clocked from a 32kHz clock
(which is quite a common configuration and one that's supported by the
machine driver since it gets the clock from DT) that's definitely not
going to be the case and I'd not expect it to work at all sensibly.
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