summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/virtio/mmio.yaml
blob: 4b7a0273181c1af8f69fb650c4e38e8a7083eaf2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/virtio/mmio.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: virtio memory mapped devices

maintainers:
  - Jean-Philippe Brucker <jean-philippe@linaro.org>

description:
  See https://www.oasis-open.org/committees/tc_home.php?wg_abbrev=virtio for
  more details.

properties:
  compatible:
    const: virtio,mmio

  reg:
    maxItems: 1

  interrupts:
    maxItems: 1

  '#iommu-cells':
    description: Required when the node corresponds to a virtio-iommu device.
    const: 1

  iommus:
    description: Required for devices making accesses thru an IOMMU.
    maxItems: 1

required:
  - compatible
  - reg
  - interrupts

additionalProperties:
  type: object

examples:
  - |
    virtio@3000 {
        compatible = "virtio,mmio";
        reg = <0x3000 0x100>;
        interrupts = <41>;

        /* Device has endpoint ID 23 */
        iommus = <&viommu 23>;
    };

    viommu: iommu@3100 {
        compatible = "virtio,mmio";
        reg = <0x3100 0x100>;
        interrupts = <42>;

        #iommu-cells = <1>;
    };

...