| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) | |
| %YAML 1.2 | |
| --- | |
| $id: http://devicetree.org/schemas/input/cypress,tm2-touchkey.yaml# | |
| $schema: http://devicetree.org/meta-schemas/core.yaml# | |
| title: Samsung TM2 touch key controller | |
| maintainers: | |
| - Stephan Gerhold <stephan@gerhold.net> | |
| description: | | |
| Touch key controllers similar to the TM2 can be found in a wide range of | |
| Samsung devices. They are implemented using many different MCUs, but use | |
| a similar I2C protocol. | |
| allOf: | |
| - $ref: input.yaml# | |
| properties: | |
| compatible: | |
| enum: | |
| - cypress,tm2-touchkey | |
| - cypress,midas-touchkey | |
| - cypress,aries-touchkey | |
| - coreriver,tc360-touchkey | |
| reg: | |
| maxItems: 1 | |
| interrupts: | |
| maxItems: 1 | |
| vdd-supply: | |
| description: Optional regulator for LED voltage, 3.3V. | |
| vcc-supply: | |
| description: Optional regulator for MCU, 1.8V-3.3V (depending on MCU). | |
| vddio-supply: | |
| description: | | |
| Optional regulator that provides digital I/O voltage, | |
| e.g. for pulling up the interrupt line or the I2C pins. | |
| linux,keycodes: | |
| minItems: 1 | |
| maxItems: 4 | |
| required: | |
| - compatible | |
| - reg | |
| - interrupts | |
| additionalProperties: false | |
| examples: | |
| - | | |
| #include <dt-bindings/input/input.h> | |
| #include <dt-bindings/interrupt-controller/irq.h> | |
| i2c { | |
| #address-cells = <1>; | |
| #size-cells = <0>; | |
| touchkey@20 { | |
| compatible = "cypress,tm2-touchkey"; | |
| reg = <0x20>; | |
| interrupt-parent = <&gpa3>; | |
| interrupts = <2 IRQ_TYPE_EDGE_FALLING>; | |
| vcc-supply = <&ldo32_reg>; | |
| vdd-supply = <&ldo33_reg>; | |
| linux,keycodes = <KEY_MENU KEY_BACK>; | |
| }; | |
| }; |