Re: [PATCH v3 1/2] dt-bindings: input/touchscreen: bindings for Imagis

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On 15/02/2022 16:15, Markuss Broks wrote:
> This patch adds device-tree bindings for the Imagis
> IST3038C touch screen IC.
> 
> Signed-off-by: Markuss Broks <markuss.broks@xxxxxxxxx>
> ---
>  .../input/touchscreen/imagis,ist3038c.yaml    | 75 +++++++++++++++++++
>  .../devicetree/bindings/vendor-prefixes.yaml  |  2 +
>  2 files changed, 77 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> new file mode 100644
> index 000000000000..7b127817e1f6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/imagis,ist3038c.yaml
> @@ -0,0 +1,75 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/touchscreen/imagis,ist3038c.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Imagis IST30XXC family touchscreen controller bindings
> +
> +maintainers:
> +  - Markuss Broks <markuss.broks@xxxxxxxxx>
> +
> +allOf:
> +  - $ref: touchscreen.yaml#
> +
> +properties:
> +  $nodename:
> +    pattern: "^touchscreen(@.*)?$"

reg is required, so @ is not optional:
^touchscreen@[0-9a-f]+$

> +
> +  compatible:
> +    items:

Do you expect here multiple compatibles? If not, the items are not needed.

> +      - enum:
> +          - imagis,ist3038c
> +
> +  reg:
> +    description: I2C address

You can skip description because it is fairly obvious, but instead you
need maxItems. Alternatively, a list (items) with description defines
max items.


Best regards,
Krzysztof



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