[alsa-devel] [Q] ASoC: What's the real meaning of SND_SOC_DAIFMT_NB_NF?
broonie at opensource.wolfsonmicro.com
Fri Feb 24 12:53:36 CET 2012
On Fri, Feb 24, 2012 at 12:05:09PM +0100, javier Martin wrote:
> On 24 February 2012 09:34, Peter Ujfalusi <peter.ujfalusi at ti.com> wrote:
> > I don't think it is going to break. I would guess that the channels are
> > swapped on these machines at the moment. If you correct the CPU dai
> > driver the only thing that will happen is that the channels will jump in
> > their correct place.
> That would be true for stereo. However, mono should not be working right now.
Mono isn't particularly defined for I2S at the best of times; the
clocking is inherently stereo. You may just pick out the left channel
or you may duplicate things on left and right channels (at which point a
polarity change won't be noticed). I wouldn't worry too much about it,
it's better to have things the right way round and fix up configuration
for machines that need it.
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