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 7title: Freescale MPR121 capacitive touch sensor controller 8 9maintainers: 10 - Dmitry Torokhov <dmitry.torokhov@gmail.com> 11 12description: | 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 17allOf: 18 - $ref: input.yaml# 19 20properties: 21 compatible: 22 const: fsl,mpr121-touchkey 23 24 reg: 25 maxItems: 1 26 27 interrupts: 28 maxItems: 1 29 30 vdd-supply: 31 maxItems: 1 32 33 linux,keycodes: 34 minItems: 1 35 maxItems: 12 36 37 wakeup-source: 38 description: Use any event on keypad as wakeup event. 39 type: boolean 40 41required: 42 - compatible 43 - reg 44 - interrupts 45 - vdd-supply 46 - linux,keycodes 47 48examples: 49 - | 50 #include "dt-bindings/input/input.h" 51 i2c { 52 #address-cells = <1>; 53 #size-cells = <0>; 54 55 mpr121@5a { 56 compatible = "fsl,mpr121-touchkey"; 57 reg = <0x5a>; 58 interrupt-parent = <&gpio1>; 59 interrupts = <28 2>; 60 autorepeat; 61 vdd-supply = <&ldo4_reg>; 62 linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, 63 <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>, 64 <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; 65 }; 66 }; 67