On Tue, Jul 27, 2021 at 10:53:50AM +0530, Viresh Kumar wrote:
> This patch adds binding for virtio GPIO controller, it is based on
> virtio-device bindings.
>
> Reviewed-by: Arnd Bergmann <[email protected]>
> Signed-off-by: Viresh Kumar <[email protected]>
> ---
> .../devicetree/bindings/gpio/gpio-virtio.yaml | 59 +++++++++++++++++++
> 1 file changed, 59 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
>
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
> b/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
> new file mode 100644
> index 000000000000..601d85754577
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
> @@ -0,0 +1,59 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/gpio-virtio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Virtio GPIO controller
> +
> +maintainers:
> + - Viresh Kumar <[email protected]>
> +
> +allOf:
> + - $ref: /schemas/virtio/virtio-device.yaml#
> +
> +description:
> + Virtio GPIO controller, see /schemas/virtio/virtio-device.yaml for more
> + details.
> +
> +properties:
> + $nodename:
> + const: gpio
> +
> + compatible:
> + const: virtio,device29
> +
> + gpio-controller: true
> +
> + "#gpio-cells":
> + const: 2
> +
> + interrupt-controller: true
> +
> + "#interrupt-cells":
> + const: 2
Humm, how does one implement interrupts without a parent interrupt? It
uses the parent virtio,mmio interrupt?
> +
> +required:
> + - compatible
> + - gpio-controller
> + - "#gpio-cells"
> +
> +unevaluatedProperties: false
> +
> +examples:
> + - |
> + virtio@3000 {
> + compatible = "virtio,mmio";
> + reg = <0x3000 0x100>;
> + interrupts = <41>;
> +
> + gpio {
> + compatible = "virtio,device29";
> + gpio-controller;
> + #gpio-cells = <2>;
> + interrupt-controller;
> + #interrupt-cells = <2>;
> + };
> + };
> +
> +...
> --
> 2.31.1.272.g89b43f80a514
>
>
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