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media: dt: bindings: tegra-vde: Document new optional IOMMU property 

All NVIDIA Tegra SoC generations provide IOMMU support for the video
decoder engine. Document new optional device-tree property that connects
VDE with the IOMMU provider.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
This commit is contained in:
Dmitry Osipenko 2019-06-23 13:07:26 -04:00 committed by Mauro Carvalho Chehab
parent e2727ec58c
commit 78b3e86b5a
1 changed files with 2 additions and 0 deletions
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Documentation/devicetree/bindings/media/nvidia,tegra-vde.txt
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@ -35,6 +35,7 @@ Optional properties:
- resets : Must contain an entry for each entry in reset-names.
- reset-names : Must include the following entries:
- mc
- iommus: Must contain phandle to the IOMMU device node.
Example:
@ -59,4 +60,5 @@ video-codec@6001a000 {
clocks = <&tegra_car TEGRA20_CLK_VDE>;
reset-names = "vde", "mc";
resets = <&tegra_car 61>, <&mc TEGRA20_MC_RESET_VDE>;
iommus = <&mc TEGRA_SWGROUP_VDE>;
};