linux-kernel - Re: [PATCH v2 2/2] dt-bindings: touchscreen: move ar1021.txt to trivial-touch.yaml

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Message-ID: <20250930-venomous-tracing-669be2e1163b@spud>
Date: Tue, 30 Sep 2025 20:05:56 +0100
From: Conor Dooley <conor@...nel.org>
To: Frank Li <Frank.Li@....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>,
	"open list:INPUT (KEYBOARD, MOUSE, JOYSTICK, TOUCHSCREEN)..." <linux-input@...r.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" <devicetree@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>, imx@...ts.linux.dev
Subject: Re: [PATCH v2 2/2] dt-bindings: touchscreen: move ar1021.txt to
 trivial-touch.yaml

On Fri, Sep 26, 2025 at 02:47:12PM -0400, Frank Li wrote:
> ar1021 have only reg and interrupts property beside touch common
> properties. So move context of ar1021.txt into trivial-touch.yaml.
> 
> Signed-off-by: Frank Li <Frank.Li@....com>
> ---
> change in v2
>  move to trivial-touch.yaml
> 
> previous discussion
>     https://lore.kernel.org/imx/20250925-swimming-overspend-ddf7ab4a252c@spud/T/#t

You mentioned there were a load of other devices using just these 3
properties. Do you intend moving those too?

> ---
>  .../bindings/input/touchscreen/ar1021.txt         | 15 ---------------
>  .../bindings/input/touchscreen/trivial-touch.yaml |  2 ++
>  2 files changed, 2 insertions(+), 15 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/ar1021.txt
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/ar1021.txt b/Documentation/devicetree/bindings/input/touchscreen/ar1021.txt
> deleted file mode 100644
> index 82019bd6094ee..0000000000000
> --- a/Documentation/devicetree/bindings/input/touchscreen/ar1021.txt
> +++ /dev/null
> @@ -1,15 +0,0 @@
> -* Microchip AR1020 and AR1021 touchscreen interface (I2C)
> -
> -Required properties:
> -- compatible		: "microchip,ar1021-i2c"
> -- reg			: I2C slave address
> -- interrupts		: touch controller interrupt
> -
> -Example:
> -
> -	touchscreen@4d {
> -		compatible = "microchip,ar1021-i2c";
> -		reg = <0x4d>;
> -		interrupt-parent = <&gpio3>;
> -		interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
> -	};
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
> index c393cce273c5b..d6aed3afd4acb 100644
> --- a/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
> +++ b/Documentation/devicetree/bindings/input/touchscreen/trivial-touch.yaml
> @@ -14,6 +14,8 @@ properties:
>      enum:
>        # MAXI MAX11801 Resistive touch screen controller with i2c interface
>        - maxim,max11801
> +      # Microchip AR1020 and AR1021 touchscreen interface (I2C)
> +      - microchip,ar1021-i2c
>  
>    reg:
>      maxItems: 1
> -- 
> 2.34.1
> 

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