lkml.org 
[lkml]   [2013]   [May]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 05/39] ARM: ux500: Stop passing MMC's platform data for Device Tree boots
From
On Wed, May 15, 2013 at 11:51 AM, Lee Jones <lee.jones@linaro.org> wrote:

> It was required to pass DMA channel configuration information to the
> MMC driver before the new DMA API was in place. Now that it is, and
> is fully compatible with Device Tree we can stop doing that.
>
> Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>

So since the use of dma_request_slave_channel() is not upstream,
I guess this will break DMA use (i.e slow down transfers!) on all
device tree boots?

I'd be happy to apply it once the MMCI patch is in linux-next
indicating there may just be a window in the merge period
where it falls back to IRQ mode, but I don't want to disable
DMA on DT boots for an entire kernel cycle just like that.

Not applied as of yet.

Yours,
Linus Walleij


\
 
 \ /
  Last update: 2013-05-15 19:41    [W:0.362 / U:1.436 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site