[PATCH] mmci: restrict DMA usage to large, even multiblock transfers

Russell King - ARM Linux linux at arm.linux.org.uk
Tue Feb 1 10:05:42 EST 2011

On Tue, Feb 01, 2011 at 03:07:12PM +0100, Linus Walleij wrote:
> 2011/2/1 Russell King - ARM Linux <linux at arm.linux.org.uk>:
> > So... I think this patch will work fine on ST variants, returning the
> > DMA request signals back to their classic meaning.  That being LSREQ
> > is only activated on the _final_ transfer rather than the last 8
> > transfers, which as Linus describes makes your DMA controller complete
> > on the 8th-to-last transfer.
> I've tested this patch on MMC and SD on U8500 and it works
> fine, so
> Tested-by: Linus Walleij <linus.walleij at linaro.org>

Thanks.  Can I apply that to the DMA patch too (and combine this with the
main MMCI DMA patch) ?

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