| # 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>; | |
| }; | |
| }; |