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media: dt-bindings: media: Document bindings for venus firmware device

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Add devicetree binding documentation for firmware loader for video
hardware running on qualcomm chip.

Signed-off-by: Vikash Garodia <vgarodia@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Tested-by: Alexandre Courbot <acourbot@chromium.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:
Vikash Garodia 2018-10-17 09:18:23 -04:00 committed by Mauro Carvalho Chehab
parent df381dc8e4
commit fe5a2bbb63
1 changed files with 13 additions and 1 deletions
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14
Documentation/devicetree/bindings/media/qcom,venus.txt
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@ -53,7 +53,8 @@
* Subnodes
The Venus video-codec node must contain two subnodes representing
video-decoder and video-encoder.
video-decoder and video-encoder, and one optional firmware subnode.
Firmware subnode is needed when the platform does not have TrustZone.
Every of video-encoder or video-decoder subnode should have:
@ -79,6 +80,13 @@ Every of video-encoder or video-decoder subnode should have:
power domain which is responsible for collapsing
and restoring power to the subcore.
The firmware subnode must have:
- iommus:
Usage: required
Value type: <prop-encoded-array>
Definition: A list of phandle and IOMMU specifier pairs.
* An Example
video-codec@1d00000 {
compatible = "qcom,msm8916-venus";
@ -105,4 +113,8 @@ Every of video-encoder or video-decoder subnode should have:
clock-names = "core";
power-domains = <&mmcc VENUS_CORE1_GDSC>;
};
video-firmware {
iommus = <&apps_iommu 0x10b2 0x0>;
};
};