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| author | Jean-Philippe Brucker <[email protected]> | 2019-01-15 12:19:53 +0000 |
|---|---|---|
| committer | Michael S. Tsirkin <[email protected]> | 2019-06-06 21:32:13 +0000 |
| commit | 8447d84e35f2c3b2e76f80319d0b547a9521bafa (patch) | |
| tree | fe47d0adeefd957d3714ef44e9b60029b1a02c60 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | vhost: fix clang build warning (diff) | |
| download | kernel-8447d84e35f2c3b2e76f80319d0b547a9521bafa.tar.gz kernel-8447d84e35f2c3b2e76f80319d0b547a9521bafa.zip | |
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 <[email protected]>
Reviewed-by: Eric Auger <[email protected]>
Signed-off-by: Jean-Philippe Brucker <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
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