Documentation/devicetree/bindings/input/cypress,tm2-touchkey.yaml

   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     };