From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Juergen Beisert <jbe@pengutronix.de>
Cc: linuxppc-dev@ozlabs.org, alsa-devel@alsa-project.org
Subject: Re: [PATCH V2 5/9] Main rewite of the mpc5200 audio DMA code
Date: Mon, 25 May 2009 11:51:40 +0100 [thread overview]
Message-ID: <20090525105140.GF18290@sirena.org.uk> (raw)
In-Reply-To: <200905250956.28206.jbe@pengutronix.de>
On Mon, May 25, 2009 at 09:56:27AM +0200, Juergen Beisert wrote:
> Do you know this (from our website)?
> "The AC97 mixer needs a hardware patch to make it wake up from power down
> mode. Download here the instruction how to do so."
> http://www.pengutronix.de/oselas/bsp/phytec/download/phyCORE-MPC5200B-tiny/TN-015e_1.pdf
This modification should not be required - a warm reset should be enough
to bring the AC97 link up. The current ASoC driver for the WM9712 will
do this automatically - the expectation for non-ASoC systems is that the
warm reset will always be issued.
That said, I'd be surprised if it were the same problem given that
iterating cold resets appears to resolve whatever the issues is.
next prev parent reply other threads:[~2009-05-25 10:51 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-23 23:12 [PATCH V2 0/9] mpc5200 audio rework for AC97 Jon Smirl
2009-05-23 23:12 ` [PATCH V2 1/9] Register the wm9712 DAIs on module load Jon Smirl
2009-05-24 11:11 ` [alsa-devel] " Mark Brown
2009-05-24 15:28 ` Jon Smirl
2009-05-24 15:32 ` Jon Smirl
2009-05-24 19:14 ` Mark Brown
2009-05-23 23:12 ` [PATCH V2 2/9] Basic split of mpc5200 DMA code out from mpc5200_psc_i2s Jon Smirl
2009-05-24 14:11 ` Grant Likely
2009-05-23 23:13 ` [PATCH V2 3/9] Rename the PSC functions to DMA Jon Smirl
2009-05-24 11:15 ` [alsa-devel] " Mark Brown
2009-05-24 14:12 ` Grant Likely
2009-05-23 23:13 ` [PATCH V2 4/9] Add a few more mpc5200 PSC defines Jon Smirl
2009-05-24 14:13 ` Grant Likely
2009-05-24 18:00 ` Mark Brown
2009-05-24 18:19 ` Grant Likely
2009-05-24 18:32 ` [alsa-devel] " Mark Brown
2009-05-23 23:13 ` [PATCH V2 5/9] Main rewite of the mpc5200 audio DMA code Jon Smirl
2009-05-24 11:26 ` [alsa-devel] " Mark Brown
2009-05-24 18:55 ` Wolfram Sang
2009-05-24 20:10 ` Jon Smirl
2009-05-24 20:35 ` Wolfram Sang
2009-05-25 7:56 ` Juergen Beisert
2009-05-25 10:51 ` Mark Brown [this message]
2009-05-23 23:13 ` [PATCH V2 6/9] Codec for STAC9766 used on the Efika Jon Smirl
2009-05-24 11:46 ` [alsa-devel] " Mark Brown
2009-05-23 23:13 ` [PATCH V2 7/9] AC97 driver for mpc5200 Jon Smirl
2009-05-24 12:10 ` [alsa-devel] " Mark Brown
2009-05-23 23:13 ` [PATCH V2 8/9] Fabric bindings for STAC9766 on the Efika Jon Smirl
2009-05-24 12:12 ` [alsa-devel] " Mark Brown
2009-05-23 23:13 ` [PATCH V2 9/9] Support for AC97 on Phytec pmc030 base board Jon Smirl
2009-05-24 12:13 ` [alsa-devel] " Mark Brown
2009-05-23 23:20 ` [PATCH V2 0/9] mpc5200 audio rework for AC97 Jon Smirl
2009-05-24 11:08 ` [alsa-devel] " Mark Brown
2009-05-24 15:21 ` Jon Smirl
2009-05-24 18:35 ` Mark Brown
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