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:
  35     maxItems: 1
  36
  37   linux,keycodes:
  38     minItems: 1
  39     maxItems: 12
  40
  41   wakeup-source:
  42     description: Use any event on keypad as wakeup event.
  43     type: boolean
  44
  45 required:
  46   - compatible
  47   - reg
  48   - vdd-supply
  49   - linux,keycodes
  50
  51 unevaluatedProperties: false
  52
  53 examples:
  54   - |
  55     // Example with interrupts
  56     #include "dt-bindings/input/input.h"
  57     i2c {
  58         #address-cells = <1>;
  59         #size-cells = <0>;
  60
  61         mpr121@5a {
  62             compatible = "fsl,mpr121-touchkey";
  63             reg = <0x5a>;
  64             interrupt-parent = <&gpio1>;
  65             interrupts = <28 2>;
  66             autorepeat;
  67             vdd-supply = <&ldo4_reg>;
  68             linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
  69                              <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
  70                              <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
  71         };
  72     };
  73
  74   - |
  75     // Example with polling
  76     #include "dt-bindings/input/input.h"
  77     i2c {
  78         #address-cells = <1>;
  79         #size-cells = <0>;
  80
  81         mpr121@5a {
  82             compatible = "fsl,mpr121-touchkey";
  83             reg = <0x5a>;
  84             poll-interval = <20>;
  85             autorepeat;
  86             vdd-supply = <&ldo4_reg>;
  87             linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
  88                              <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>,
  89                              <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
  90         };
  91     };