[alsa-devel] [PATCH] ASoC: codecs/wm8978: Only reconfigure GPIO1 when used for PLL output

Mark Brown broonie at opensource.wolfsonmicro.com
Thu Nov 15 06:20:38 CET 2012

On Tue, Nov 13, 2012 at 09:43:08AM -0500, Eric Millbrandt wrote:

> However, I agree that the handling of the pin is odd.  Does OPCLK really need
> to be reconfigured as input whenever the PLL values are updated?  I didn't
> see anything in the user manual to suggest that that needed to be done.

It should not be a requirement of the device itself.  It might be a
requirement of something using the clock but the system doing that
should take care of remuxing the pin as needed.  What I'd suggest doing
here is removing the management of the pin completely from this
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