[alsa-devel] [PATCH] ASoC: OMAP: mcbsp: ensure that CLKX and CLKR are not used as ouput pins when they are used as input clock for the SRG.

[Jarkko Nikula]

Hi

On Thu, Jan 15, 2015 at 11:28:21PM +0100, Thomas Niederprüm wrote:
> This patch fixes faulty behaviour in a setup where the input clock for
> the SRG is fed through the CLKR pin but the McBSP is configured to be
> master (SND_SOC_DAIFMT_CBS_CFS). In that case of course CLKR must not be
> configured as output pin. Otherwise the input clock is messed up
> horribly. The same reasoning applies if CLKX is configured as input for
> the SRG.
> 
> Signed-off-by: Thomas Niederprüm <niederp at physik.uni-kl.de>
> ---
>  sound/soc/omap/omap-mcbsp.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
I cannot check at the moment but is this actually a contradictory
configuration if McBSP is set to bit clock master but at the same want
to use it as an input also? Should you use SND_SOC_DAIFMT_CBM_CFS
instead?

Peter: care to check?

-- 
Jarkko