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 ...
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