[alsa-devel] [PATCH] ASoC: adau1701: Reset codec based on sample rate changes

Mark Brown broonie at kernel.org
Wed Mar 23 14:42:48 CET 2016


On Wed, Mar 23, 2016 at 02:37:10PM +0100, Lars-Peter Clausen wrote:
> On 03/23/2016 01:48 PM, Mark Brown wrote:

> > Why does this mean we have to reset the CODEC rather than just
> > reprogramming it?

> Quoting from the datasheet:

> 	The clock mode should not be changed without also resetting
> 	the ADAU1701. If the mode is changed during operation, a
> 	click or pop can result in the output signals. The state of the
> 	PLL_MODEx pins should be changed while RESET is held low.

That should be in the commit log and/or code since that's *extremely*
unusual and is likely to surprise people.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 473 bytes
Desc: not available
URL: <http://mailman.alsa-project.org/pipermail/alsa-devel/attachments/20160323/43761d18/attachment.sig>


More information about the Alsa-devel mailing list