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90 lines
2.1 KiB
90 lines
2.1 KiB
# 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 <[email protected]> |
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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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mpr121@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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mpr121@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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