[PATCH v3 4/7] of: configure the platform device dma parameters

[Benjamin Herrenschmidt]

On Mon, 2014-05-05 at 16:28 -0600, Bjorn Helgaas wrote:
> I still wonder whether arm, powerpc, and tile (and I just noticed
> microblaze also has a similar dma_direct_map_page()) could all be
> handled by attaching devices to a generic trivial IOMMU driver
> parameterized with the appropriate constant offset.

On powerpc, the offset is not constant, it can be per-device

Cheers,
Ben.