From mboxrd@z Thu Jan  1 00:00:00 1970
From: Timur Tabi <timur@freescale.com>
Subject: Re: Random inverted audio channels
Date: Fri, 15 Feb 2008 12:48:09 -0600
Message-ID: <47B5DE69.3030604@freescale.com>
References: <002201c86ff1$61de9e00$259bda00$@bouin@kerlink.fr>
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To: Alexandre BOUIN <a.bouin@kerlink.fr>
Cc: alsa-devel@alsa-project.org
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Alexandre BOUIN wrote:

> We have an issue : when we play a right channel stereo track, sound is
> played on right channel, but sometimes on left.
> This issue could happen right after starting kernel, or later after 10-20
> sounds played.

I've had a similar problem.  In my case, the clock from the codec to the chip 
was unstable.  When I attached a 5pF capacitor to it, the clock stabilized and 
the problem went away.

Try using a probe to validate the clock signal.

-- 
Timur Tabi
Linux kernel developer at Freescale