On Wed, Feb 24, 2010 at 03:35:46PM +0100, Linus Walleij wrote:

If a generic PrimeCell DMA doesn't work out, we will have to fork
the driver instead, since we cannot even use it with the U8500
without DMA support, perhaps this is just as good anyway since
we wouldn't be disturbing RealView etc with our patches. But
it'll lead to some code duplication.

Versatile and Realview both have DMA infrastructure based around the
PL080 and a routing selector for the DMA signals.  However, no one
has yet come up with a suitable way to deal with this yet...