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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/input/touchscreen/zinitix,bt400.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Zinitix BT4xx and BT5xx series touchscreen controller
+
+description: The Zinitix BT4xx and BT5xx series of touchscreen controllers
+ are Korea-produced touchscreens with embedded microcontrollers. The
+ BT4xx series was produced 2010-2013 and the BT5xx series 2013-2014.
+
+maintainers:
+ - Michael Srba <Michael.Srba@seznam.cz>
+ - Linus Walleij <linus.walleij@linaro.org>
+
+allOf:
+ - $ref: touchscreen.yaml#
+
+properties:
+ $nodename:
+ pattern: "^touchscreen(@.*)?$"
+
+ compatible:
+ enum:
+ - zinitix,bt402
+ - zinitix,bt403
+ - zinitix,bt404
+ - zinitix,bt412
+ - zinitix,bt413
+ - zinitix,bt431
+ - zinitix,bt432
+ - zinitix,bt531
+ - zinitix,bt532
+ - zinitix,bt538
+ - zinitix,bt541
+ - zinitix,bt548
+ - zinitix,bt554
+ - zinitix,at100
+
+ reg:
+ description: I2C address on the I2C bus
+
+ clock-frequency:
+ description: I2C client clock frequency, defined for host when using
+ the device on the I2C bus
+ minimum: 0
+ maximum: 400000
+
+ interrupts:
+ description: Interrupt to host
+ maxItems: 1
+
+ vcca-supply:
+ description: Analog power supply regulator on the VCCA pin
+
+ vdd-supply:
+ description: Digital power supply regulator on the VDD pin.
+ In older device trees this can be the accidental name for the analog
+ supply on the VCCA pin, and in that case the deprecated vddo-supply is
+ used for the digital power supply.
+
+ vddo-supply:
+ description: Deprecated name for the digital power supply, use vdd-supply
+ as this reflects the real name of the pin. If this supply is present,
+ the vdd-supply represents VCCA instead of VDD. Implementers should first
+ check for this property, and if it is present assume that the vdd-supply
+ represents the analog supply.
+ deprecated: true
+
+ reset-gpios:
+ description: Reset line for the touchscreen, should be tagged
+ as GPIO_ACTIVE_LOW
+
+ zinitix,mode:
+ description: Mode of reporting touch points. Some modes may not work
+ with a particular ts firmware for unknown reasons. Available modes are
+ 1 and 2. Mode 2 is the default and preferred.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2]
+
+ touchscreen-size-x: true
+ touchscreen-size-y: true
+ touchscreen-fuzz-x: true
+ touchscreen-fuzz-y: true
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - touchscreen-size-x
+ - touchscreen-size-y
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ touchscreen@20 {
+ compatible = "zinitix,bt541";
+ reg = <0x20>;
+ interrupt-parent = <&gpio>;
+ interrupts = <13 IRQ_TYPE_EDGE_FALLING>;
+ vcca-supply = <&reg_vcca_tsp>;
+ vdd-supply = <&reg_vdd_tsp>;
+ touchscreen-size-x = <540>;
+ touchscreen-size-y = <960>;
+ zinitix,mode = <2>;
+ };
+ };