LXR linux/Documentation/devicetree/bindings/input/fsl,mpr121-touchkey.yaml

   1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
   2%YAML 1.2
   3---
   4$id: http://devicetree.org/schemas/input/fsl,mpr121-touchkey.yaml#
   5$schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7title: Freescale MPR121 capacitive touch sensor controller
   8
   9maintainers:
  10  - Dmitry Torokhov <dmitry.torokhov@gmail.com>
  11
  12description: |
  13  The MPR121 supports up to 12 completely independent electrodes/capacitance
  14  sensing inputs in which 8 are multifunctional for LED driving and GPIO.
  15  https://www.nxp.com/docs/en/data-sheet/MPR121.pdf
  16
  17allOf:
  18  - $ref: input.yaml#
  19
  20anyOf:
  21  - required: [ interrupts ]
  22  - required: [ poll-interval ]
  23
  24properties:
  25  compatible:
  26    const: fsl,mpr121-touchkey
  27
  28  reg:
  29    maxItems: 1
  30
  31  interrupts:
  32    maxItems: 1
  33
  34  vdd-supply: true
  35
  36  linux,keycodes:
  37    minItems: 1
  38    maxItems: 12
  39
  40  wakeup-source:
  41    description: Use any event on keypad as wakeup event.
  42    type: boolean
  43
  44required:
  45  - compatible
  46  - reg
  47  - vdd-supply
  48  - linux,keycodes
  49
  50unevaluatedProperties: false
  51
  52examples:
  53  - |
  54    // Example with interrupts
  55    #include "dt-bindings/input/input.h"
  56    i2c {
  57        #address-cells = <1>;
  58        #size-cells = <0>;
  59
  60        mpr121@5a {
  61            compatible = "fsl,mpr121-touchkey";
  62            reg = <0x5a>;
  63            interrupt-parent = <&gpio1>;
  64            interrupts = <28 2>;
  65            autorepeat;
  66            vdd-supply = <&ldo4_reg>;
  67            linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
  68                             <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
  69                             <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
  70        };
  71    };
  72
  73  - |
  74    // Example with polling
  75    #include "dt-bindings/input/input.h"
  76    i2c {
  77        #address-cells = <1>;
  78        #size-cells = <0>;
  79
  80        mpr121@5a {
  81            compatible = "fsl,mpr121-touchkey";
  82            reg = <0x5a>;
  83            poll-interval = <20>;
  84            autorepeat;
  85            vdd-supply = <&ldo4_reg>;
  86            linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
  87                             <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
  88                             <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
  89        };
  90    };
  91