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media: dt-bindings: allwinner: h6-vpu-g2: Add IOMMU reference property

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The Hantro G2 video decoder block sits behind an IOMMU. The device tree
binding needs a property to reference it. Without a reference for the
implementation to properly configure the IOMMU, it will fault and cause
the video decoder to fail.

Add an "iommus" property for referring to the IOMMU port. The master ID
in the example is taken from the IOMMU fault error message on Linux,
and the number seems to match the order in the user manual's IOMMU
diagram.

Fixes: fd6be12716c4 ("media: dt-bindings: allwinner: document H6 Hantro G2 binding")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221115090644.3602573-2-wenst@chromium.org
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
This commit is contained in:
Chen-Yu Tsai 2022-11-15 17:06:43 +08:00 committed by Jernej Skrabec
parent 077686da0e
commit 38f0d57d0a
1 changed files with 5 additions and 0 deletions
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5
Documentation/devicetree/bindings/media/allwinner,sun50i-h6-vpu-g2.yaml
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@ -36,6 +36,9 @@ properties:
resets:
maxItems: 1
iommus:
maxItems: 1
required:
- compatible
- reg
@ -43,6 +46,7 @@ required:
- clocks
- clock-names
- resets
- iommus
additionalProperties: false
@ -59,6 +63,7 @@ examples:
clocks = <&ccu CLK_BUS_VP9>, <&ccu CLK_VP9>;
clock-names = "bus", "mod";
resets = <&ccu RST_BUS_VP9>;
iommus = <&iommu 5>;
};
...