| # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/input/fsl,mpr121-touchkey.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Freescale MPR121 capacitive touch sensor controller |
| |
| maintainers: |
| - Dmitry Torokhov <dmitry.torokhov@gmail.com> |
| |
| description: | |
| The MPR121 supports up to 12 completely independent electrodes/capacitance |
| sensing inputs in which 8 are multifunctional for LED driving and GPIO. |
| https://www.nxp.com/docs/en/data-sheet/MPR121.pdf |
| |
| allOf: |
| - $ref: input.yaml# |
| |
| anyOf: |
| - required: [ interrupts ] |
| - required: [ poll-interval ] |
| |
| properties: |
| compatible: |
| const: fsl,mpr121-touchkey |
| |
| reg: |
| maxItems: 1 |
| |
| interrupts: |
| maxItems: 1 |
| |
| vdd-supply: true |
| |
| linux,keycodes: |
| minItems: 1 |
| maxItems: 12 |
| |
| wakeup-source: |
| description: Use any event on keypad as wakeup event. |
| type: boolean |
| |
| required: |
| - compatible |
| - reg |
| - vdd-supply |
| - linux,keycodes |
| |
| unevaluatedProperties: false |
| |
| examples: |
| - | |
| // Example with interrupts |
| #include "dt-bindings/input/input.h" |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| touchkey@5a { |
| compatible = "fsl,mpr121-touchkey"; |
| reg = <0x5a>; |
| interrupt-parent = <&gpio1>; |
| interrupts = <28 2>; |
| autorepeat; |
| vdd-supply = <&ldo4_reg>; |
| linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, |
| <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>, |
| <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; |
| }; |
| }; |
| |
| - | |
| // Example with polling |
| #include "dt-bindings/input/input.h" |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| touchkey@5a { |
| compatible = "fsl,mpr121-touchkey"; |
| reg = <0x5a>; |
| poll-interval = <20>; |
| autorepeat; |
| vdd-supply = <&ldo4_reg>; |
| linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, |
| <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>, |
| <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; |
| }; |
| }; |