74 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/input/cypress,tm2-touchkey.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Samsung TM2 touch key controller8 9maintainers:10 - Stephan Gerhold <stephan@gerhold.net>11 12description: |13 Touch key controllers similar to the TM2 can be found in a wide range of14 Samsung devices. They are implemented using many different MCUs, but use15 a similar I2C protocol.16 17allOf:18 - $ref: input.yaml#19 20properties:21 compatible:22 enum:23 - cypress,tm2-touchkey24 - cypress,midas-touchkey25 - cypress,aries-touchkey26 - coreriver,tc360-touchkey27 28 reg:29 maxItems: 130 31 interrupts:32 maxItems: 133 34 vdd-supply:35 description: Optional regulator for LED voltage, 3.3V.36 37 vcc-supply:38 description: Optional regulator for MCU, 1.8V-3.3V (depending on MCU).39 40 vddio-supply:41 description: |42 Optional regulator that provides digital I/O voltage,43 e.g. for pulling up the interrupt line or the I2C pins.44 45 linux,keycodes:46 minItems: 147 maxItems: 448 49required:50 - compatible51 - reg52 - interrupts53 54additionalProperties: false55 56examples:57 - |58 #include <dt-bindings/input/input.h>59 #include <dt-bindings/interrupt-controller/irq.h>60 i2c {61 #address-cells = <1>;62 #size-cells = <0>;63 64 touchkey@20 {65 compatible = "cypress,tm2-touchkey";66 reg = <0x20>;67 interrupt-parent = <&gpa3>;68 interrupts = <2 IRQ_TYPE_EDGE_FALLING>;69 vcc-supply = <&ldo32_reg>;70 vdd-supply = <&ldo33_reg>;71 linux,keycodes = <KEY_MENU KEY_BACK>;72 };73 };74