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dt-bindings: touchscreen: convert bu21013 bindings to json schema
Convert Rohm BU21013 I2C touchscreen controller device tree binding to
json-schema.
Additional changes:
- Replace <supply_name>-supply with avdd-supply to match example and
existing DTS.
- Add reset-gpios in the example because it is required.
Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://lore.kernel.org/r/20250918153630.2535208-1-dario.binacchi@amarulasolutions.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
authored by
Dario Binacchi
and committed by
Dmitry Torokhov
7e52794b
6e4a5154
+95
-43
-43
Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
-43
Documentation/devicetree/bindings/input/touchscreen/bu21013.txt
···
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* Rohm BU21013 Touch Screen
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Required properties:
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- compatible : "rohm,bu21013_tp"
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- reg : I2C device address
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- reset-gpios : GPIO pin enabling (selecting) chip (CS)
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- interrupt-parent : the phandle for the gpio controller
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- interrupts : (gpio) interrupt to which the chip is connected
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Optional properties:
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- touch-gpios : GPIO pin registering a touch event
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- <supply_name>-supply : Phandle to a regulator supply
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- touchscreen-size-x : General touchscreen binding, see [1].
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- touchscreen-size-y : General touchscreen binding, see [1].
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- touchscreen-inverted-x : General touchscreen binding, see [1].
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- touchscreen-inverted-y : General touchscreen binding, see [1].
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- touchscreen-swapped-x-y : General touchscreen binding, see [1].
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[1] All general touchscreen properties are described in
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Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt.
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Deprecated properties:
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- rohm,touch-max-x : Maximum outward permitted limit in the X axis
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- rohm,touch-max-y : Maximum outward permitted limit in the Y axis
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- rohm,flip-x : Flip touch coordinates on the X axis
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- rohm,flip-y : Flip touch coordinates on the Y axis
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Example:
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i2c@80110000 {
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bu21013_tp@5c {
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compatible = "rohm,bu21013_tp";
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reg = <0x5c>;
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interrupt-parent = <&gpio2>;
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interrupts <&20 IRQ_TYPE_LEVEL_LOW>;
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touch-gpio = <&gpio2 20 GPIO_ACTIVE_LOW>;
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avdd-supply = <&ab8500_ldo_aux1_reg>;
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touchscreen-size-x = <384>;
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touchscreen-size-y = <704>;
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touchscreen-inverted-y;
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};
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};
+95
Documentation/devicetree/bindings/input/touchscreen/rohm,bu21013.yaml
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Documentation/devicetree/bindings/input/touchscreen/rohm,bu21013.yaml
···
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/input/touchscreen/rohm,bu21013.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Rohm BU21013 touchscreen
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description:
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Rohm BU21013 I2C driven touchscreen controller.
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maintainers:
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- Dario Binacchi <dario.binacchi@amarulasolutions.com>
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allOf:
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- $ref: touchscreen.yaml#
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properties:
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compatible:
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enum:
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- rohm,bu21013_tp
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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touch-gpios:
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maxItems: 1
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description: GPIO registering a touch event.
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avdd-supply:
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description: Analogic power supply
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rohm,touch-max-x:
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deprecated: true
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description: Maximum value on the X axis.
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$ref: /schemas/types.yaml#/definitions/uint32
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rohm,touch-max-y:
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deprecated: true
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description: Maximum value on the Y axis.
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$ref: /schemas/types.yaml#/definitions/uint32
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rohm,flip-x:
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deprecated: true
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description: Flip touch coordinates on the X axis
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type: boolean
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rohm,flip-y:
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deprecated: true
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description: Flip touch coordinates on the Y axis
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type: boolean
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touchscreen-inverted-x: true
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touchscreen-inverted-y: true
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touchscreen-size-x: true
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touchscreen-size-y: true
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touchscreen-swapped-x-y: true
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additionalProperties: false
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required:
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- compatible
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- reg
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- reset-gpios
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- interrupts
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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touchscreen@5c {
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compatible = "rohm,bu21013_tp";
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reg = <0x5c>;
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interrupt-parent = <&gpio2>;
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interrupts = <0x20 IRQ_TYPE_LEVEL_LOW>;
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reset-gpios = <&gpio2 19 GPIO_ACTIVE_LOW>;
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touch-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
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avdd-supply = <&ab8500_ldo_aux1_reg>;
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touchscreen-size-x = <384>;
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touchscreen-size-y = <704>;
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touchscreen-inverted-y;
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};
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};