116 lines
3.1 KiB
YAML
116 lines
3.1 KiB
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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$id: http://devicetree.org/schemas/input/touchscreen/zinitix,bt400.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Zinitix BT4xx and BT5xx series touchscreen controller bindings
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description: The Zinitix BT4xx and BT5xx series of touchscreen controllers
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are Korea-produced touchscreens with embedded microcontrollers. The
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BT4xx series was produced 2010-2013 and the BT5xx series 2013-2014.
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maintainers:
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- Michael Srba <Michael.Srba@seznam.cz>
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- Linus Walleij <linus.walleij@linaro.org>
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allOf:
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- $ref: touchscreen.yaml#
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properties:
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$nodename:
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pattern: "^touchscreen(@.*)?$"
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compatible:
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enum:
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- zinitix,bt402
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- zinitix,bt403
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- zinitix,bt404
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- zinitix,bt412
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- zinitix,bt413
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- zinitix,bt431
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- zinitix,bt432
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- zinitix,bt531
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- zinitix,bt532
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- zinitix,bt538
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- zinitix,bt541
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- zinitix,bt548
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- zinitix,bt554
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- zinitix,at100
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reg:
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description: I2C address on the I2C bus
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clock-frequency:
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description: I2C client clock frequency, defined for host when using
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the device on the I2C bus
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minimum: 0
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maximum: 400000
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interrupts:
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description: Interrupt to host
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maxItems: 1
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vcca-supply:
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description: Analog power supply regulator on the VCCA pin
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vdd-supply:
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description: Digital power supply regulator on the VDD pin.
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In older device trees this can be the accidental name for the analog
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supply on the VCCA pin, and in that case the deprecated vddo-supply is
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used for the digital power supply.
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vddo-supply:
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description: Deprecated name for the digital power supply, use vdd-supply
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as this reflects the real name of the pin. If this supply is present,
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the vdd-supply represents VCCA instead of VDD. Implementers should first
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check for this property, and if it is present assume that the vdd-supply
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represents the analog supply.
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deprecated: true
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reset-gpios:
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description: Reset line for the touchscreen, should be tagged
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as GPIO_ACTIVE_LOW
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zinitix,mode:
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description: Mode of reporting touch points. Some modes may not work
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with a particular ts firmware for unknown reasons. Available modes are
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1 and 2. Mode 2 is the default and preferred.
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$ref: /schemas/types.yaml#/definitions/uint32
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enum: [1, 2]
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touchscreen-size-x: true
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touchscreen-size-y: true
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touchscreen-fuzz-x: true
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touchscreen-fuzz-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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- touchscreen-size-x
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- touchscreen-size-y
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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#include <dt-bindings/gpio/gpio.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@20 {
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compatible = "zinitix,bt541";
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reg = <0x20>;
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interrupt-parent = <&gpio>;
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interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
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vcca-supply = <®_vcca_tsp>;
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vdd-supply = <®_vdd_tsp>;
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touchscreen-size-x = <540>;
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touchscreen-size-y = <960>;
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zinitix,mode = <2>;
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};
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};
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