From mboxrd@z Thu Jan 1 00:00:00 1970 From: sshtylyov@mvista.com (Sergei Shtylyov) Date: Fri, 28 Dec 2012 22:49:23 +0300 Subject: [PATCH] ARM: pxa27x: fix ac97 controller warm reset code In-Reply-To: <1356706349-3189-1-git-send-email-mikedunn@newsguy.com> References: <1356706349-3189-1-git-send-email-mikedunn@newsguy.com> Message-ID: <50DDF7C3.40303@mvista.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hello. On 12/28/2012 05:52 PM, Mike Dunn wrote: > 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 Please also specify the summary of that commit in parens. > instead of a high output. > Signed-off-by: Mike Dunn WBR, Sergei