Re: [PATCH V3 2/5] dt-bindings: i2c: Add bindings for i2c-virtio

[Rob Herring]

On Sun, Jul 25, 2021 at 10:52 PM Viresh Kumar <viresh.kumar@xxxxxxxxxx> wrote:
>
> This patch adds binding for virtio I2C device, it is based on
> virtio-device bindings.
>
> Acked-by: Wolfram Sang <wsa@xxxxxxxxxx>
> Signed-off-by: Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/i2c/i2c-virtio.yaml   | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i2c/i2c-virtio.yaml
>
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-virtio.yaml b/Documentation/devicetree/bindings/i2c/i2c-virtio.yaml
> new file mode 100644
> index 000000000000..0381d9065287
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i2c/i2c-virtio.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i2c/i2c-virtio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Virtio I2C Adapter
> +
> +maintainers:
> +  - Viresh Kumar <viresh.kumar@xxxxxxxxxx>
> +
> +allOf:
> +  - $ref: /schemas/i2c/i2c-controller.yaml#
> +  - $ref: /schemas/virtio/virtio-device.yaml#
> +
> +description:
> +  Virtio I2C device, see /schemas/virtio/virtio-device.yaml for more details.
> +
> +properties:
> +  $nodename:
> +    pattern: '^i2c-virtio(-[a-z0-9]+)?$'

i2c-controller.yaml already defines the node name. In this case
though, it can be restricted a bit more to be just 'i2c' as there's
only a single instance.

> +
> +  compatible:
> +    const: virtio,22
> +
> +required:
> +  - compatible
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    virtio@3000 {
> +        compatible = "virtio,mmio";
> +        reg = <0x3000 0x100>;
> +        interrupts = <41>;
> +
> +        i2c-virtio {
> +            compatible = "virtio,22";
> +
> +            #address-cells = <1>;
> +            #size-cells = <0>;
> +
> +            light-sensor@1c {
> +                compatible = "dynaimage,al3320a";
> +                reg = <0x20>;
> +            };
> +        };
> +    };
> +
> +...
> --
> 2.31.1.272.g89b43f80a514
>