linux-kernel - Re: [PATCH V3 3/5] dt-bindings: gpio: Add bindings for gpio-virtio

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Message-ID: <CAL_JsqKbk+Y-QiyzRpeCVAQvSWMOn7j51t4uUMkEw61XX3-muQ@mail.gmail.com>
Date:   Mon, 26 Jul 2021 09:11:01 -0600
From:   Rob Herring <robh+dt@...nel.org>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Arnd Bergmann <arnd@...nel.org>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Bill Mills <bill.mills@...aro.org>,
        Alex Bennée <alex.bennee@...aro.org>,
        "Enrico Weigelt, metux IT consult" <info@...ux.net>,
        Jie Deng <jie.deng@...el.com>, devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "open list:DRM DRIVER FOR QEMU'S CIRRUS DEVICE" 
        <virtualization@...ts.linux-foundation.org>,
        "open list:GPIO SUBSYSTEM" <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH V3 3/5] dt-bindings: gpio: Add bindings for gpio-virtio

On Sun, Jul 25, 2021 at 10:52 PM Viresh Kumar <viresh.kumar@...aro.org> wrote:
>
> This patch adds binding for virtio GPIO controller, it is based on
> virtio-device bindings.
>
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  .../devicetree/bindings/gpio/gpio-virtio.yaml | 60 +++++++++++++++++++
>  1 file changed, 60 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..96108cfb7a08
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/gpio-virtio.yaml
> @@ -0,0 +1,60 @@
> +# 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 <viresh.kumar@...aro.org>
> +
> +allOf:
> +  - $ref: /schemas/gpio/gpio.yaml#

You don't need to include this.

> +  - $ref: /schemas/virtio/virtio-device.yaml#
> +
> +description:
> +  Virtio GPIO controller, see /schemas/virtio/virtio-device.yaml for more
> +  details.
> +
> +properties:
> +  $nodename:
> +    pattern: '^gpio-virtio(-[a-z0-9]+)?$'
> +
> +  compatible:
> +    const: virtio,29
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  interrupt-controller: true
> +
> +  "#interrupt-cells":
> +    const: 2
> +
> +required:
> +  - compatible
> +  - gpio-controller
> +  - "#gpio-cells"
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    virtio@...0 {
> +        compatible = "virtio,mmio";
> +        reg = <0x3000 0x100>;
> +        interrupts = <41>;
> +
> +        gpio: gpio-virtio {
> +            compatible = "virtio,29";
> +            gpio-controller;
> +            #gpio-cells = <2>;
> +            interrupt-controller;
> +            #interrupt-cells = <2>;
> +        };
> +    };
> +
> +...
> --
> 2.31.1.272.g89b43f80a514
>