[PATCH v2 5/5] spi/ep93xx: add DMA support

Mika Westerberg mika.westerberg at iki.fi
Tue Jun 7 13:14:04 EDT 2011


On Fri, Jun 03, 2011 at 02:44:00PM -0600, Grant Likely wrote:
> On Sun, May 29, 2011 at 01:10:06PM +0300, Mika Westerberg wrote:
> > This patch adds DMA support for the EP93xx SPI driver. By default the DMA is
> > not enabled but it can be enabled by setting ep93xx_spi_info.use_dma to true
> > in board configuration file.
> > 
> > Note that the SPI driver still uses PIO for small transfers (<= 8 bytes) for
> > performance reasons.
> > 
> > Signed-off-by: Mika Westerberg <mika.westerberg at iki.fi>
> > Acked-by: H Hartley Sweeten <hsweeten at visionengravers.com>
> > Cc: Grant Likely <grant.likely at secretlab.ca>
> 
> Acked-by: Grant Likely <grant.likely at secretlab.ca>
> 
> Since this depends on the DMA patches, it can go in via the same tree.

I just realized that once the SPI driver renaming patch (spi: reorganize
drivers) enters linux-next, this patch (which sits on Vinod's tree) will cause
a merge conflict. Any ideas how to avoid it beforehand?



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