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# 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 <zhang.lyra@gmail.com>
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>;
};
...