Re: [PATCH v3 1/3] dt-bindings: net: nfc: add st,st21nfcd

[Krzysztof Kozlowski]

On Thu, Aug 20, 2026 at 08:56:07PM +0000, Kristian Brox wrote:
>    reset-gpios:
>      description: Output GPIO pin used for resetting the controller
> @@ -36,6 +37,15 @@ properties:
>        Specifies that the uicc swp signal can be physically connected to the
>        controller
>  
> +  clocks:
> +    maxItems: 1
> +    description:
> +      External reference clock connected to SYS_CLK.
> +
> +  vdd-io-supply:
> +    description:
> +      Digital I/O supply (VPS_IO).
> +
>  required:
>    - compatible
>    - interrupts
> @@ -49,6 +59,7 @@ if:
>          enum:
>            - st,st21nfcb-i2c
>            - st,st21nfcc-i2c
> +          - st,st21nfcd

This is not true. Please open datasheet - it clearly says SPI interface.

>  then:
>    properties:
>      spi-max-frequency: false
> @@ -81,6 +92,26 @@ examples:
>          };
>      };
>  
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +
> +    i2c {

Both clocks and vdd-io supply are valid for other devices, so just add
them there and drop the new example.

Best regards,
Krzysztof