xref: /freebsd/sys/contrib/device-tree/Bindings/iommu/sprd,iommu.yaml (revision 2eb4d8dc723da3cf7d735a3226ae49da4c8c5dbc)

# 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>;
    };

...