[PATCH] ARM: pxa27x: fix ac97 controller warm reset code
Mike Dunn
mikedunn at newsguy.com
Fri Dec 28 16:04:59 EST 2012
On 12/28/2012 11:49 AM, Sergei Shtylyov wrote:
> 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.
OK, will resend patch.
Thanks,
Mike
More information about the linux-arm-kernel
mailing list