2023-08-30 17:31:07 +02:00
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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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$id: http://devicetree.org/schemas/input/goodix,gt7375p.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Goodix GT7375P touchscreen
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maintainers:
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- Douglas Anderson <dianders@chromium.org>
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description:
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Supports the Goodix GT7375P touchscreen.
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This touchscreen uses the i2c-hid protocol but has some non-standard
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power sequencing required.
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properties:
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compatible:
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oneOf:
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- const: goodix,gt7375p
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- items:
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- const: goodix,gt7986u
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- const: goodix,gt7375p
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reg:
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enum:
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- 0x5d
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- 0x14
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interrupts:
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maxItems: 1
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reset-gpios:
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true
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vdd-supply:
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description: The 3.3V supply to the touchscreen.
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mainboard-vddio-supply:
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description:
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The supply on the main board needed to power up IO signals going
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to the touchscreen. This supply need not go to the touchscreen
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itself as long as it allows the main board to make signals compatible
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with what the touchscreen is expecting for its IO rails.
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2023-10-24 12:59:35 +02:00
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goodix,no-reset-during-suspend:
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description:
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Set this to true to enforce the driver to not assert the reset GPIO
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during suspend.
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Due to potential touchscreen hardware flaw, back-powering could happen in
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suspend if the power supply is on and with active-low reset GPIO asserted.
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This property is used to avoid the back-powering issue.
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type: boolean
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2023-08-30 17:31:07 +02:00
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required:
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- compatible
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- reg
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- interrupts
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- reset-gpios
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- vdd-supply
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/clock/qcom,rpmh.h>
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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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ap_ts: touchscreen@5d {
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compatible = "goodix,gt7375p";
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reg = <0x5d>;
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interrupt-parent = <&tlmm>;
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interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
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reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
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vdd-supply = <&pp3300_ts>;
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};
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};
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