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This IOMMU module can be used by Unisoc's multimedia devices, such as display, Image codec(jpeg) and a few signal processors, including VSP(video), GSP(graphic), ISP(image), and CPP(camera pixel processor), etc. Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lore.kernel.org/r/20210305093216.201897-2-zhang.lyra@gmail.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
57 lines
1.2 KiB
YAML
57 lines
1.2 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright 2020 Unisoc Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Unisoc IOMMU and Multi-media MMU
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maintainers:
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- Chunyan Zhang <zhang.lyra@gmail.com>
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properties:
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compatible:
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enum:
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- sprd,iommu-v1
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"#iommu-cells":
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const: 0
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description:
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Unisoc IOMMUs are all single-master IOMMU devices, therefore no
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additional information needs to associate with its master device.
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Please refer to the generic bindings document for more details,
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Documentation/devicetree/bindings/iommu/iommu.txt
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reg:
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maxItems: 1
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clocks:
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description:
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Reference to a gate clock phandle, since access to some of IOMMUs are
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controlled by gate clock, but this is not required.
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required:
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- compatible
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- reg
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- "#iommu-cells"
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additionalProperties: false
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examples:
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- |
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iommu_disp: iommu@63000800 {
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compatible = "sprd,iommu-v1";
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reg = <0x63000800 0x80>;
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#iommu-cells = <0>;
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};
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- |
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iommu_jpg: iommu@62300300 {
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compatible = "sprd,iommu-v1";
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reg = <0x62300300 0x80>;
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#iommu-cells = <0>;
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clocks = <&mm_gate 1>;
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};
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...
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