1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/virtio/mmio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: virtio memory mapped devices
8
9 maintainers:
10 - Jean-Philippe Brucker <jean-philippe@linaro.org>
11
12 description:
13 See https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio for
14 more details.
15
16 properties:
17 compatible:
18 const: virtio,mmio
19
20 reg:
21 maxItems: 1
22
23 dma-coherent: true
24
25 interrupts:
26 maxItems: 1
27
28 '#iommu-cells':
29 description: Required when the node corresponds to a virtio-iommu device.
30 const: 1
31
32 iommus:
33 description: Required for devices making accesses thru an IOMMU.
34 maxItems: 1
35
36 wakeup-source:
37 type: boolean
38 description: Required for setting irq of a virtio_mmio device as wakeup source.
39
40 required:
41 - compatible
42 - reg
43 - interrupts
44
45 additionalProperties:
46 type: object
47
48 examples:
49 - |
50 virtio@3000 {
51 compatible = "virtio,mmio";
52 reg = <0x3000 0x100>;
53 interrupts = <41>;
54
55 /* Device has endpoint ID 23 */
56 iommus = <&viommu 23>;
57 };
58
59 viommu: iommu@3100 {
60 compatible = "virtio,mmio";
61 reg = <0x3100 0x100>;
62 interrupts = <42>;
63
64 #iommu-cells = <1>;
65 };
66
67 ...
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