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d259f13746
The irq-gpios description misleading, apparently saying that driving the IRQ GPIO resets the device, which is even more puzzling as there is a reset GPIO as well. In reality the IRQ pin can be driven during the reset sequence to configure the client address, as it becomes clear after checking both the datasheet and the driver code. Improve the text to clarify that. Also rephrase to remove reference to the driver, which is not appropriate in the bindings. Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Jeff LaBundy <jeff@labundy.com> Link: https://lore.kernel.org/r/20240102081934.11293-1-luca.ceresoli@bootlin.com Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
83 lines
1.7 KiB
YAML
83 lines
1.7 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/input/touchscreen/goodix.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Goodix GT9xx series touchscreen controller
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maintainers:
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- Dmitry Torokhov <dmitry.torokhov@gmail.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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- goodix,gt1151
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- goodix,gt1158
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- goodix,gt5663
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- goodix,gt5688
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- goodix,gt911
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- goodix,gt9110
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- goodix,gt912
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- goodix,gt9147
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- goodix,gt917s
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- goodix,gt927
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- goodix,gt9271
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- goodix,gt928
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- goodix,gt9286
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- goodix,gt967
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reg:
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enum: [ 0x5d, 0x14 ]
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interrupts:
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maxItems: 1
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irq-gpios:
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description: GPIO pin used for IRQ input. Additionally, this line is
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sampled by the device on reset deassertion to select the I2C client
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address, thus it can be driven by the host during the reset sequence.
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maxItems: 1
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reset-gpios:
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maxItems: 1
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AVDD28-supply:
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description: Analog power supply regulator on AVDD28 pin
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VDDIO-supply:
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description: GPIO power supply regulator on VDDIO pin
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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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- interrupts
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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gt928@5d {
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compatible = "goodix,gt928";
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reg = <0x5d>;
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interrupt-parent = <&gpio>;
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interrupts = <0 0>;
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irq-gpios = <&gpio1 0 0>;
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reset-gpios = <&gpio1 1 0>;
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};
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};
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...
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