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iommu/ipmmu-vmsa: IPMMU device is 40-bit bus master
The r8a7795 IPMMU supports 40-bit bus mastering. Both the coherent DMA mask and the streaming DMA mask are set to unlock the 40-bit address space for coherent allocations and streaming operations. Signed-off-by: Magnus Damm <damm+renesas@opensource.se> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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