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    Subject[PATCH V3 1/5] dt-bindings: virtio: Add binding for virtio devices
    Date
    Allow virtio device sub-nodes to be added to the virtio mmio or pci
    nodes. The compatible property for virtio device must be of format
    "virtio,<DID>", where DID is virtio device ID in hexadecimal format.

    Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
    ---
    .../devicetree/bindings/virtio/mmio.yaml | 2 +-
    .../bindings/virtio/virtio-device.yaml | 47 +++++++++++++++++++
    2 files changed, 48 insertions(+), 1 deletion(-)
    create mode 100644 Documentation/devicetree/bindings/virtio/virtio-device.yaml

    diff --git a/Documentation/devicetree/bindings/virtio/mmio.yaml b/Documentation/devicetree/bindings/virtio/mmio.yaml
    index d46597028cf1..1b91553f87c6 100644
    --- a/Documentation/devicetree/bindings/virtio/mmio.yaml
    +++ b/Documentation/devicetree/bindings/virtio/mmio.yaml
    @@ -36,7 +36,7 @@ title: virtio memory mapped devices
    - reg
    - interrupts

    -additionalProperties: false
    +additionalProperties: true

    examples:
    - |
    diff --git a/Documentation/devicetree/bindings/virtio/virtio-device.yaml b/Documentation/devicetree/bindings/virtio/virtio-device.yaml
    new file mode 100644
    index 000000000000..15cb6df8c98a
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/virtio/virtio-device.yaml
    @@ -0,0 +1,47 @@
    +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    +%YAML 1.2
    +---
    +$id: http://devicetree.org/schemas/virtio/virtio-device.yaml#
    +$schema: http://devicetree.org/meta-schemas/core.yaml#
    +
    +title: Virtio device bindings
    +
    +maintainers:
    + - Viresh Kumar <viresh.kumar@linaro.org>
    +
    +description:
    + These bindings are applicable to virtio devices irrespective of the bus they
    + are bound to, like mmio or pci.
    +
    +# We need a select here so we don't match all nodes with 'virtio,mmio'
    +properties:
    + $nodename:
    + pattern: '^[a-z0-9]+-virtio(-[a-z0-9]+)?$'
    + description: |
    + Exactly one node describing the virtio device. The name of the node isn't
    + significant but its phandle can be used to by a user of the virtio device.
    +
    + compatible:
    + pattern: "^virtio,[0-9a-f]+$"
    + description: Virtio device nodes.
    + "virtio,DID", where DID is the virtio device id. The textual
    + representation of DID shall be in lower case hexadecimal with leading
    + zeroes suppressed.
    +
    +required:
    + - compatible
    +
    +additionalProperties: true
    +
    +examples:
    + - |
    + virtio@3000 {
    + compatible = "virtio,mmio";
    + reg = <0x3000 0x100>;
    + interrupts = <43>;
    +
    + i2c-virtio {
    + compatible = "virtio,22";
    + };
    + };
    +...
    --
    2.31.1.272.g89b43f80a514
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