[alsa-devel] [PATCH] ASoC: Document DAI signal polarity

[Mark Brown]

On Wed, Sep 30, 2015 at 09:22:18PM +0200, Benoît Thébaudeau wrote:

> Most CODEC datasheets describe the regular left/right justified
> formats as having the left channel starting on the rising edge of
> FSYNC, like for DSP A/B and AC'97. I²S is the only exception here.

Interesting, yes - I just did a quick survey of ones I have and that
does seem to be the case for the random selection I picked.  I have to
say I've never paid very much attention to those modes since they are so
rarely used (a quick survey of machine drivers suggests zero actual
users in mainline unless there's some DT selecting them).
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