Re: [V2 1/2] powerpc: mpc512x_dma: add support for data transfersbetween memory and i/o memory

From: Gerhard Sittig
Date: Fri Jul 12 2013 - 11:32:21 EST


On Fri, Jul 12, 2013 at 14:14 +0200, Gerhard Sittig wrote:
>
> We shall combine the parts which currently are floating around.
> So that others aren't supposed to pick up pieces but instead can
> use a series and get something consistent.
>
> Here are the parts that I'm aware of:
> - Anatolij's work that was motivated by SD card support, the
> mxcmmc(4) part went mainline, the DMA part did not (patchwork
> 2368581, 2368591)
> - Lars' work on OF support that was motivated by a different
> platform but is useful for the MPC512x as well (2331091)
> - your Alex' work that is motivated by SCLPC support is currently
> under review (while the DMA part appears to re-use Anatolij's
> approach?)
> - my local work that's picking up Anatolij's previous work and
> includes items which are unrelated to DMA yet are helpful here
> (MPC512x common clock support, preprocessor use in DTS builds)
>
> So I suggest that I create an RFC series which combines those
> parts that I consider "DMA related", which you can in turn put
> your SCLPC support onto, or pick it up and fold it into yours.
> The latter may be more appropriate since announcing something via
> OF is only useful after implementing the support (here: slave
> S/G in the DMA engine).

for the record: the series was just sent out

From: Gerhard Sittig <gsi@xxxxxxx>
To: linuxppc-dev@xxxxxxxxxxxxxxxx,
devicetree-discuss@xxxxxxxxxxxxxxxx,
Alexander Popov <a13xp0p0v88@xxxxxxxxx>
Cc: Dan Williams <djbw@xxxxxx>,
Vinod Koul <vinod.koul@xxxxxxxxx>,
Lars-Peter Clausen <lars@xxxxxxxxxx>,
Arnd Bergmann <arnd@xxxxxxxx>,
Anatolij Gustschin <agust@xxxxxxx>,
Gerhard Sittig <gsi@xxxxxxx>
Subject: [PATCH RFC 0/8] MPC512x DMA slave s/g support, OF DMA lookup
Date: Fri, 12 Jul 2013 17:26:13 +0200
Message-Id: <1373642781-32631-1-git-send-email-gsi@xxxxxxx>


virtually yours
Gerhard Sittig
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