[PATCH v3 2/3] dt-bindings: gpio: Add EIO GPIO compatible to gpio-zynq

[Rob Herring]

On Tue, Apr 21, 2026 at 04:13:57PM +0530, Shubhrajyoti Datta wrote:
> EIO (Extended IO) GPIO is a Xilinx IP block that exposes
> multiplexed I/O pins through an EIO interface.
> 
> The EIO GPIO block has 2 banks with 26 GPIOs each (52 total).
> The GPIO width cannot be determined from the hardware registers,
> the driver relies on the compatible string to select the correct
> bank/pin configuration. A new compatible is therefore required.
> 
> The block is currently present on xa2ve3288 silicon.
> The compatible string uses version 1.0 matching the IP core version.
> 
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta at amd.com>
> ---
> 
> Changes in v3:
> - Update the commit message
> 
> Changes in v2:
> - Add description of EIO block
> 
>  .../devicetree/bindings/gpio/gpio-zynq.yaml        | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.yaml b/Documentation/devicetree/bindings/gpio/gpio-zynq.yaml
> index 30a7f836c341..1ca067217509 100644
> --- a/Documentation/devicetree/bindings/gpio/gpio-zynq.yaml
> +++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.yaml
> @@ -12,6 +12,7 @@ maintainers:
>  properties:
>    compatible:
>      enum:
> +      - xlnx,eio-gpio-1.0
>        - xlnx,pmc-gpio-1.0
>        - xlnx,versal-gpio-1.0
>        - xlnx,zynq-gpio-1.0
> @@ -30,7 +31,7 @@ properties:
>  
>    gpio-line-names:
>      description: strings describing the names of each gpio line
> -    minItems: 58
> +    minItems: 52
>      maxItems: 174
>  
>    interrupt-controller: true
> @@ -89,6 +90,17 @@ allOf:
>            minItems: 116
>            maxItems: 116
>  
> +  - if:
> +      properties:
> +        compatible:
> +          enum:
> +            - xlnx,eio-gpio-1.0
> +    then:
> +      properties:
> +        gpio-line-names:
> +          minItems: 52

The min is already 52, so you can drop this. With that,

Acked-by: Rob Herring (Arm) <robh at kernel.org>

> +          maxItems: 52
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.34.1
>