On Mon, Sep 24, 2018 at 03:41:36AM +0300, Dmitry Osipenko wrote:

GART can't handle all devices, hence ignore devices that aren't related
to GART. IOMMU phandle must be explicitly assign to devices in the device
tree.

I think technically the GART can indeed handle all devices since it is
just a physical address region that can be used to remap other physical
addresses. That's not to say that doing so would be a good idea. So the
commit message here is slightly confusing, but other than that the idea
is good, so:

Acked-by: Thierry Reding <redacted>