Re: [PATCH 2/2] dt-bindings: gpio: Add support for PCF8574T.

[Laurent Pinchart]

Hi Tóth,

Thank you for the patch.

On Mon, Feb 17, 2025 at 02:07:52PM +0100, Tóth János via B4 Relay wrote:
> From: Tóth János <gomba007@xxxxxxxxx>
> 
> Add the necessary documentation for PCF8574T.
> 
> Signed-off-by: Tóth János <gomba007@xxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml b/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml
> index 3718103e966a..cbe4cf96e942 100644
> --- a/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml
> +++ b/Documentation/devicetree/bindings/gpio/nxp,pcf8575.yaml
> @@ -34,6 +34,7 @@ properties:
>        - nxp,pca9675
>        - nxp,pcf8574
>        - nxp,pcf8574a
> +      - nxp,pcf8574t

Judging from patch 2/2, the PCF8574T is compatible with the PCF8574, the
only difference being the package. It makes no difference from a
software point of view. It seems you can simply use nxp,pcf8574 as a
compatible string in your device tree for the PCF8574T, and this patch
series isn't needed.

>        - nxp,pcf8575
>  
>    reg:

-- 
Regards,

Laurent Pinchart