[Patch v4] OMAP: sDMA driver: descriptor autoloading feature

Adrian Hunter adrian.hunter at nokia.com
Wed Jan 6 08:16:01 EST 2010

Venkatraman S wrote:
> On Tue, Dec 29, 2009 at 3:18 AM, Tony Lindgren <tony at atomide.com> wrote:
>> * Venkatraman S <svenkatr at ti.com> [091211 07:01]:
>>> Here is the most updated version of the patch (thanks to Russell's
>>> review). This patch is applicable to OMAP4xxx as well as OMAP3630
>>> Reference to previous posts
>>> v1  http://marc.info/?l=linux-omap&m=125012097403050&w=2
>>> v2  http://marc.info/?l=linux-omap&m=125137152606644&w=2
>>> v3  http://patchwork.kernel.org/patch/45408/
>> Do you have a patch for drivers/mmc/host/omap_hsmmc.c to
>> use this feature? Or some other driver?
>> Regards,
>> Tony
> I am about to start working on omap_hsmmc to use the descriptor load
> feature. If the DMA changes are acceptable, I can post the driver
> patch as well.

I presume this is about performance.  How does it compare to chained DMA?
We have a patch for omap_hsmmc for chained DMA that we are still testing.

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