| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | # Copyright 2020 Unisoc Inc. |
| 3 | %YAML 1.2 |
| 4 | --- |
| 5 | $id: http://devicetree.org/schemas/iommu/sprd,iommu.yaml# |
| 6 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 7 | |
| 8 | title: Unisoc IOMMU and Multi-media MMU |
| 9 | |
| 10 | maintainers: |
| 11 | - Chunyan Zhang <zhang.lyra@gmail.com> |
| 12 | |
| 13 | properties: |
| 14 | compatible: |
| 15 | enum: |
| 16 | - sprd,iommu-v1 |
| 17 | |
| 18 | "#iommu-cells": |
| 19 | const: 0 |
| 20 | description: |
| 21 | Unisoc IOMMUs are all single-master IOMMU devices, therefore no |
| 22 | additional information needs to associate with its master device. |
| 23 | Please refer to the generic bindings document for more details, |
| 24 | Documentation/devicetree/bindings/iommu/iommu.txt |
| 25 | |
| 26 | reg: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | clocks: |
| 30 | description: |
| 31 | Reference to a gate clock phandle, since access to some of IOMMUs are |
| 32 | controlled by gate clock, but this is not required. |
| 33 | |
| 34 | required: |
| 35 | - compatible |
| 36 | - reg |
| 37 | - "#iommu-cells" |
| 38 | |
| 39 | additionalProperties: false |
| 40 | |
| 41 | examples: |
| 42 | - | |
| 43 | iommu_disp: iommu@63000800 { |
| 44 | compatible = "sprd,iommu-v1"; |
| 45 | reg = <0x63000800 0x80>; |
| 46 | #iommu-cells = <0>; |
| 47 | }; |
| 48 | |
| 49 | - | |
| 50 | iommu_jpg: iommu@62300300 { |
| 51 | compatible = "sprd,iommu-v1"; |
| 52 | reg = <0x62300300 0x80>; |
| 53 | #iommu-cells = <0>; |
| 54 | clocks = <&mm_gate 1>; |
| 55 | }; |
| 56 | |
| 57 | ... |