| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/input/cypress,tm2-touchkey.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Samsung TM2 touch key controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Stephan Gerhold <stephan@gerhold.net> |
| 11 | |
| 12 | description: | |
| 13 | Touch key controllers similar to the TM2 can be found in a wide range of |
| 14 | Samsung devices. They are implemented using many different MCUs, but use |
| 15 | a similar I2C protocol. |
| 16 | |
| 17 | allOf: |
| 18 | - $ref: input.yaml# |
| 19 | |
| 20 | properties: |
| 21 | compatible: |
| 22 | enum: |
| 23 | - cypress,tm2-touchkey |
| 24 | - cypress,midas-touchkey |
| 25 | - cypress,aries-touchkey |
| 26 | - coreriver,tc360-touchkey |
| 27 | |
| 28 | reg: |
| 29 | maxItems: 1 |
| 30 | |
| 31 | interrupts: |
| 32 | maxItems: 1 |
| 33 | |
| 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: 1 |
| 47 | maxItems: 4 |
| 48 | |
| 49 | required: |
| 50 | - compatible |
| 51 | - reg |
| 52 | - interrupts |
| 53 | |
| 54 | additionalProperties: false |
| 55 | |
| 56 | examples: |
| 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 | }; |