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
   7 title: Freescale MPR121 capacitive touch sensor controller
   8
   9 maintainers:
  10   - Dmitry Torokhov <dmitry.torokhov@gmail.com>
  11
  12 description: |
  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
  17 allOf:
  18   - $ref: input.yaml#
  19
  20 anyOf:
  21   - required: [ interrupts ]
  22   - required: [ poll-interval ]
  23
  24 properties:
  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
  44 required:
  45   - compatible
  46   - reg
  47   - vdd-supply
  48   - linux,keycodes
  49
  50 unevaluatedProperties: false
  51
  52 examples:
  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     };