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