Re: [PATCH 1/2] dt-bindings: gpio: Add CAT9532 GPIO

[Conor Dooley]

On Tue, Sep 15, 2026 at 11:20:45AM +0200, Alban Bedel wrote:
> Add devicetree binding document for CAT9532 LED dimmer as GPIO
> controller.
> 
> Signed-off-by: Alban Bedel <alban.bedel@xxxxxxxxxx>

Some very interesting comments from Sashiko here, about whether this
should be handled in another subsystem.
At the very least, valid commentary from Linus.
pw-bot: changes-requested

Thanks,
Conor.

> ---
>  .../bindings/gpio/onnn,cat9532.yaml           | 52 +++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/gpio/onnn,cat9532.yaml
> 
> diff --git a/Documentation/devicetree/bindings/gpio/onnn,cat9532.yaml b/Documentation/devicetree/bindings/gpio/onnn,cat9532.yaml
> new file mode 100644
> index 0000000000000..6f3e3d0f4f29b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/gpio/onnn,cat9532.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/gpio/onnn,cat9532.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: On Semiconductor CAT9532 LED dimmer as GPIO controller
> +
> +maintainers:
> +  - Alban Bedel <alban.bedel@xxxxxxxxxx>
> +
> +properties:
> +  compatible:
> +    const: onnn,cat9532
> +
> +  reg:
> +    maxItems: 1
> +
> +  gpio-controller: true
> +
> +  "#gpio-cells":
> +    const: 2
> +
> +  ngpios:
> +    minimum: 1
> +    maximum: 16
> +
> +required:
> +  - compatible
> +  - reg
> +  - gpio-controller
> +  - "#gpio-cells"
> +  - ngpios
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    i2c {
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +
> +        gpio@60 {
> +            compatible = "onnn,cat9532";
> +            reg = <0x60>;
> +
> +            gpio-controller;
> +            #gpio-cells = <2>;
> +
> +            ngpios = <16>;
> +        };
> +    };
> -- 
> 2.39.5
>

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