e895d62188
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: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
70 lines
1.3 KiB
YAML
70 lines
1.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/media/allwinner,sun50i-h6-vpu-g2.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: Hantro G2 VPU codec implemented on Allwinner H6 SoC
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maintainers:
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- Jernej Skrabec <jernej.skrabec@gmail.com>
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description:
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Hantro G2 video decode accelerator present on Allwinner H6 SoC.
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properties:
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compatible:
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const: allwinner,sun50i-h6-vpu-g2
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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items:
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- description: Bus Clock
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- description: Module Clock
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clock-names:
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items:
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- const: bus
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- const: mod
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resets:
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maxItems: 1
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iommus:
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maxItems: 1
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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- resets
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- iommus
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/clock/sun50i-h6-ccu.h>
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#include <dt-bindings/reset/sun50i-h6-ccu.h>
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video-codec-g2@1c00000 {
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compatible = "allwinner,sun50i-h6-vpu-g2";
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reg = <0x01c00000 0x1000>;
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interrupts = <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&ccu CLK_BUS_VP9>, <&ccu CLK_VP9>;
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clock-names = "bus", "mod";
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resets = <&ccu RST_BUS_VP9>;
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iommus = <&iommu 5>;
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};
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...
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