Re: [PATCH v2 1/2] dt-bindings: input: touchscreen: Add ilitek 9882T touchscreen chip

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On 05/06/2023 08:05, Cong Yang wrote:
> Add an ilitek touch screen chip ili9882t.
> 
> Signed-off-by: Cong Yang <yangcong5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
> ---
>  .../bindings/input/elan,ekth6915.yaml         | 23 ++++++++++++++++---
>  1 file changed, 20 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> index 05e6f2df604c..f0e7ffdce605 100644
> --- a/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> +++ b/Documentation/devicetree/bindings/input/elan,ekth6915.yaml
> @@ -15,11 +15,14 @@ description:
>  
>  properties:
>    compatible:
> -    items:
> -      - const: elan,ekth6915
> +    enum:
> +      - elan,ekth6915
> +      - ilitek,ili9882t
>  
>    reg:
> -    const: 0x10
> +    enum:
> +      - 0x10
> +      - 0x41
>  
>    interrupts:
>      maxItems: 1
> @@ -29,11 +32,13 @@ properties:
>  
>    vcc33-supply:
>      description: The 3.3V supply to the touchscreen.
> +                 If using ili9882t then this supply will not be needed.

What does it mean "will not be needed"? Describe the hardware, not your
drivers.

I don't think you tested your DTS. Submit DTS users, because I do not
believe you are testing your patches. You already got such comment and I
don't see much of improvements here.

>  
>    vccio-supply:
>      description:
>        The IO supply to the touchscreen. Need not be specified if this is the
>        same as the 3.3V supply.
> +      If using ili9882t, the IO supply is required.

Don't repeat constraints in free form text.
>  
>  required:
>    - compatible
> @@ -41,6 +46,18 @@ required:
>    - interrupts
>    - vcc33-supply
>  
> +if:

Keep it in allOf. Will save you one indentation later.

> +  properties:
> +    compatible:
> +      contains:
> +        const: ilitek,ili9882t
> +then:
> +  required:
> +    - compatible
> +    - reg
> +    - interrupts

Don't duplicate.

> +    - vccio-supply


Best regards,
Krzysztof




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