[alsa-devel] trouble with alsa, wolfson, and TI OMAP35xx McBSP
Mark Brown
broonie at sirena.org.uk
Thu Apr 23 13:15:11 CEST 2009
On Thu, Apr 23, 2009 at 12:04:05PM +0100, Alan Horstmann wrote:
> Does this indicate that the implementation/drivers of i2s has a fundamental
> ambiguity? Is it not rigidly defined which channel should follow a rising
> edge of L/R clock?
It's clearly defined to be that the left channel follows the falling
edge of LRCLK (ie, the left channel data is transmitted while LRCLK is
low). However, not all CPUs do a wonderful job of implementing this -
some of the older Samsung chips need a workaround for synchronisation,
for example.
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