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| author | Jean-Philippe Brucker <jean-philippe.brucker@arm.com> | 2019-01-15 15:19:53 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2019-06-07 00:32:13 +0300 |
| commit | 8447d84e35f2c3b2e76f80319d0b547a9521bafa (patch) | |
| tree | fe47d0adeefd957d3714ef44e9b60029b1a02c60 /Documentation/devicetree/bindings/csky | |
| parent | 0b4a7092ffe568a55bf8f3cefdf79ff666586d91 (diff) | |
| download | linux-8447d84e35f2c3b2e76f80319d0b547a9521bafa.tar.xz | |
dt-bindings: virtio-mmio: Add IOMMU description
The nature of a virtio-mmio node is discovered by the virtio driver at
probe time. However the DMA relation between devices must be described
statically. When a virtio-mmio node is a virtio-iommu device, it needs an
"#iommu-cells" property as specified by bindings/iommu/iommu.txt.
Otherwise, the virtio-mmio device may perform DMA through an IOMMU, which
requires an "iommus" property. Describe these requirements in the
device-tree bindings documentation.
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'Documentation/devicetree/bindings/csky')
0 files changed, 0 insertions, 0 deletions