# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) # Copyright 2020 Unisoc Inc. %YAML 1.2 --- $id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Unisoc IOMMU and Multi-media MMU maintainers: - Chunyan Zhang properties: compatible: enum: - sprd,iommu-v1 "#iommu-cells": const: 0 description: Unisoc IOMMUs are all single-master IOMMU devices, therefore no additional information needs to associate with its master device. Please refer to the generic bindings document for more details, Documentation/devicetree/bindings/iommu/iommu.txt reg: maxItems: 1 clocks: description: Reference to a gate clock phandle, since access to some of IOMMUs are controlled by gate clock, but this is not required. required: - compatible - reg - "#iommu-cells" additionalProperties: false examples: - | iommu_disp: iommu@63000800 { compatible = "sprd,iommu-v1"; reg = <0x63000800 0x80>; #iommu-cells = <0>; }; - | iommu_jpg: iommu@62300300 { compatible = "sprd,iommu-v1"; reg = <0x62300300 0x80>; #iommu-cells = <0>; clocks = <&mm_gate 1>; }; ...