linux-kernel - Re: [PATCH v4 3/5] dt-bindings: touchscreen: convert raspberrypi,firmware-ts bindings to json schema

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Message-ID: <20250918201027.GA2547040-robh@kernel.org>
Date: Thu, 18 Sep 2025 15:10:27 -0500
From: Rob Herring <robh@...nel.org>
To: Dario Binacchi <dario.binacchi@...rulasolutions.com>
Cc: linux-kernel@...r.kernel.org, linux-amarula@...rulasolutions.com,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	Conor Dooley <conor+dt@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-input@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 3/5] dt-bindings: touchscreen: convert
 raspberrypi,firmware-ts bindings to json schema

On Thu, Sep 18, 2025 at 05:36:08PM +0200, Dario Binacchi wrote:
> Convert Raspberry Pi firmware 7" touchscreen controller device tree
> binding to json-schema.
> 
> Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
> 
> ---
> 
> (no changes since v3)
> 
> Changes in v3:
> - Drop firmware-rpi node and use only touchscreen node to fix warnings
>   you can see in
>   https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250913092707.1005616-3-dario.binacchi@amarulasolutions.com/
> 
> Changes in v2:
> - Added in v2
> 
>  .../touchscreen/raspberrypi,firmware-ts.txt   | 26 ------------
>  .../touchscreen/raspberrypi,firmware-ts.yaml  | 40 +++++++++++++++++++
>  2 files changed, 40 insertions(+), 26 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.txt
>  create mode 100644 Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.yaml
> 
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.txt b/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.txt
> deleted file mode 100644
> index 2a1af240ccc3..000000000000
> --- a/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.txt
> +++ /dev/null
> @@ -1,26 +0,0 @@
> -Raspberry Pi firmware based 7" touchscreen
> -=====================================
> -
> -Required properties:
> - - compatible: "raspberrypi,firmware-ts"
> -
> -Optional properties:
> - - firmware: Reference to RPi's firmware device node
> - - touchscreen-size-x: See touchscreen.txt
> - - touchscreen-size-y: See touchscreen.txt
> - - touchscreen-inverted-x: See touchscreen.txt
> - - touchscreen-inverted-y: See touchscreen.txt
> - - touchscreen-swapped-x-y: See touchscreen.txt
> -
> -Example:
> -
> -firmware: firmware-rpi {
> -	compatible = "raspberrypi,bcm2835-firmware";
> -	mboxes = <&mailbox>;
> -
> -	ts: touchscreen {
> -		compatible = "raspberrypi,firmware-ts";
> -		touchscreen-size-x = <800>;
> -		touchscreen-size-y = <480>;
> -	};
> -};
> diff --git a/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.yaml b/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.yaml
> new file mode 100644
> index 000000000000..697c508326b3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/input/touchscreen/raspberrypi,firmware-ts.yaml
> @@ -0,0 +1,40 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/input/touchscreen/raspberrypi,firmware-ts.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Raspberry Pi firmware based 7" touchscreen
> +
> +maintainers:
> +  - Dario Binacchi <dario.binacchi@...rulasolutions.com>
> +
> +allOf:
> +  - $ref: touchscreen.yaml#
> +
> +properties:
> +  compatible:
> +    enum:
> +      - raspberrypi,firmware-ts
> +
> +  firmware:
> +    description: Phandle to RPi's firmware device node.

       deprecated: true

It should be a child node.

> +
> +  touchscreen-size-x: true
> +  touchscreen-size-y: true
> +  touchscreen-inverted-x: true
> +  touchscreen-inverted-y: true
> +  touchscreen-swapped-x-y: true
> +
> +additionalProperties: false
> +
> +required:
> +  - compatible
> +
> +examples:
> +  - |
> +    touchscreen {
> +        compatible = "raspberrypi,firmware-ts";
> +        touchscreen-size-x = <800>;
> +        touchscreen-size-y = <480>;
> +    };
> -- 
> 2.43.0
> 
> base-commit: 8b789f2b7602a818e7c7488c74414fae21392b63
> branch: drop-touchscreen.txt