Bindings/iommu/sprd,iommu.yaml

   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 ...