linux-kernel - Re: [PATCH v6 1/2] dt-bindings: input: touchscreen: add Hynitron CST816X

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Message-ID: <ZuBkvc2hWcZy809Z@nixie71>
Date: Tue, 10 Sep 2024 10:24:45 -0500
From: Jeff LaBundy <jeff@...undy.com>
To: Oleh Kuzhylnyi <kuzhylol@...il.com>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-input@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	Conor Dooley <conor.dooley@...rochip.com>, igor.opaniuk@...il.com,
	Neil Armstrong <neil.armstrong@...aro.org>
Subject: Re: [PATCH v6 1/2] dt-bindings: input: touchscreen: add Hynitron
 CST816X

Hi Oleh,

On Tue, Sep 10, 2024 at 01:51:57PM +0200, Oleh Kuzhylnyi wrote:
> Add documentation for the Hynitron CST816X touchscreen bindings.
> 
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> Signed-off-by: Oleh Kuzhylnyi <kuzhylol@...il.com>
> ---
> 
> Changes in v6:
>  - Fix minor tweak adviced by Krzysztof:
>  - Move additionalProperties field after required
> 
> Changes in v5:
>  - No code changes
> 
> Changes in v4:
>  - Add Conor's Dooley "Reviewed-by" tag
> 
> Changes in v3:
>  - Rename filename to hynitron,cst816s.yaml
>  - Update description with display details
> 
> Changes in v2:
>  - Apply pin definitions and DT headers
>  - Use generic name for DT node
>  - Drop status field
> 
>  .../input/touchscreen/hynitron,cst816s.yaml   | 57 +++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/hynitron,cst816s.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/hynitron,cst816s.yaml b/Documentation/devicetree/bindings/input/touchscreen/hynitron,cst816s.yaml
> new file mode 100644
> index 000000000000..b3f4049e4b9b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/hynitron,cst816s.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/touchscreen/hynitron,cst816s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Hynitron CST816S Touchscreen controller
> +
> +description:
> +  Hynitron CST816S Touchscreen controller for 1.28-inch 240x240 Resolution
> +  Touch LCD Display Module
> +
> +maintainers:
> +  - Oleh Kuzhylnyi <kuzhylol@...il.com>
> +
> +allOf:
> +  - $ref: touchscreen.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - hynitron,cst816s
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  reset-gpios:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - reset-gpios

The reset GPIO is not required; it may simply be pulled up locally.

> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/gpio.h>
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      touchscreen@15 {
> +        compatible = "hynitron,cst816s";
> +        reg = <0x15>;
> +        interrupt-parent = <&gpio0>;
> +        interrupts = <4 IRQ_TYPE_EDGE_RISING>;
> +        reset-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
> +      };
> +    };
> +
> +...
> -- 
> 2.34.1
> 

Kind regards,
Jeff LaBundy