From: robert.jarzmik@free.fr (Robert Jarzmik)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: pxa27x: fix ac97 controller warm reset code
Date: Fri, 28 Dec 2012 19:28:12 +0100 [thread overview]
Message-ID: <87sj6qrpz7.fsf@free.fr> (raw)
In-Reply-To: <1356706349-3189-1-git-send-email-mikedunn@newsguy.com> (Mike Dunn's message of "Fri, 28 Dec 2012 06:52:29 -0800")
Mike Dunn <mikedunn@newsguy.com> writes:
> This patch fixes some code that implements a work-around to a hardware bug in
> the ac97 controller on the pxa27x. A bug in the controller's warm reset
> functionality requires that the mfp used by the controller as the AC97_RESET_n
> line be temporarily reconfigured as a generic output gpio (AF0) and manually
> held high for the duration of the warm reset cycle. This is what was done in
> the original code, but it was broken long ago by commit
> fb1bf8cd13bfa7ed0364ab0d82f717fc020d35f6, which changed the mfp to a GPIO input
> instead of a high output.
>
> Signed-off-by: Mike Dunn <mikedunn@newsguy.com>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
As a side note, shouldn't this patch (as the other one on ALSA), once reviewed,
be submitted to stable kernel ?
Cheers.
--
Robert
next prev parent reply other threads:[~2012-12-28 18:28 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-28 14:52 [PATCH] ARM: pxa27x: fix ac97 controller warm reset code Mike Dunn
2012-12-28 18:28 ` Robert Jarzmik [this message]
2012-12-28 21:07 ` Mike Dunn
2012-12-28 19:49 ` Sergei Shtylyov
2012-12-28 21:04 ` Mike Dunn
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