From: Peter Ujfalusi <peter.ujfalusi@nokia.com>
To: ext twebb <taliaferro62@gmail.com>
Cc: "alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
"linux-omap@vger.kernel.org Mailing List"
<linux-omap@vger.kernel.org>
Subject: Re: trouble with alsa, wolfson, and TI OMAP35xx McBSP
Date: Thu, 23 Apr 2009 12:20:14 +0300 [thread overview]
Message-ID: <200904231220.14465.peter.ujfalusi@nokia.com> (raw)
In-Reply-To: <dbdb2ea60904221058w67b775f3occ07f55938fe4d03@mail.gmail.com>
On Wednesday 22 April 2009 20:58:01 ext twebb wrote:
> Problem 2:
> Test tone is being presented by the user application, providing a 1Khz
> tone sampled at 44.1Khz. The data are S16_LE, right channel only. Left
> channel is quiet. The data seems to slip back and forth from left to
> right channel. This is reproducable and verified with a scope trace.
>
> Anybody have any ideas what might be going wrong here? Traces for
> codec reg dump and mcbsp are attached.
As Jarkko already asked: are you seeing the channel switch while running or is
it happens on playback start?
AFAIK this phenomena can be also seen on Beagle board.
I have done some investigation regarding to these, but so far I can not say
that I know what causes it.
BTW: these are separate issues (startup switch and runtime switch).
> Thanks,
> twebb
--
Péter
next prev parent reply other threads:[~2009-04-23 9:20 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-22 17:58 trouble with alsa, wolfson, and TI OMAP35xx McBSP twebb
2009-04-22 18:05 ` Menon, Nishanth
2009-04-23 6:08 ` Jarkko Nikula
2009-04-22 18:55 ` [alsa-devel] " Mark Brown
2009-04-23 9:20 ` Peter Ujfalusi [this message]
2009-04-23 16:50 ` Alejandro Blanca G.
2009-04-23 18:30 ` Mark Brown
2009-04-23 18:16 ` Juha Kuikka
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