1*4882a593Smuzhiyun# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/input/fsl,mpr121-touchkey.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: Freescale MPR121 capacitive touch sensor controller 8*4882a593Smuzhiyun 9*4882a593Smuzhiyunmaintainers: 10*4882a593Smuzhiyun - Dmitry Torokhov <dmitry.torokhov@gmail.com> 11*4882a593Smuzhiyun 12*4882a593Smuzhiyundescription: | 13*4882a593Smuzhiyun The MPR121 supports up to 12 completely independent electrodes/capacitance 14*4882a593Smuzhiyun sensing inputs in which 8 are multifunctional for LED driving and GPIO. 15*4882a593Smuzhiyun https://www.nxp.com/docs/en/data-sheet/MPR121.pdf 16*4882a593Smuzhiyun 17*4882a593SmuzhiyunallOf: 18*4882a593Smuzhiyun - $ref: input.yaml# 19*4882a593Smuzhiyun 20*4882a593SmuzhiyunanyOf: 21*4882a593Smuzhiyun - required: [ interrupts ] 22*4882a593Smuzhiyun - required: [ poll-interval ] 23*4882a593Smuzhiyun 24*4882a593Smuzhiyunproperties: 25*4882a593Smuzhiyun compatible: 26*4882a593Smuzhiyun const: fsl,mpr121-touchkey 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun reg: 29*4882a593Smuzhiyun maxItems: 1 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun interrupts: 32*4882a593Smuzhiyun maxItems: 1 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun vdd-supply: 35*4882a593Smuzhiyun maxItems: 1 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun linux,keycodes: 38*4882a593Smuzhiyun minItems: 1 39*4882a593Smuzhiyun maxItems: 12 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun wakeup-source: 42*4882a593Smuzhiyun description: Use any event on keypad as wakeup event. 43*4882a593Smuzhiyun type: boolean 44*4882a593Smuzhiyun 45*4882a593Smuzhiyunrequired: 46*4882a593Smuzhiyun - compatible 47*4882a593Smuzhiyun - reg 48*4882a593Smuzhiyun - vdd-supply 49*4882a593Smuzhiyun - linux,keycodes 50*4882a593Smuzhiyun 51*4882a593SmuzhiyununevaluatedProperties: false 52*4882a593Smuzhiyun 53*4882a593Smuzhiyunexamples: 54*4882a593Smuzhiyun - | 55*4882a593Smuzhiyun // Example with interrupts 56*4882a593Smuzhiyun #include "dt-bindings/input/input.h" 57*4882a593Smuzhiyun i2c { 58*4882a593Smuzhiyun #address-cells = <1>; 59*4882a593Smuzhiyun #size-cells = <0>; 60*4882a593Smuzhiyun 61*4882a593Smuzhiyun mpr121@5a { 62*4882a593Smuzhiyun compatible = "fsl,mpr121-touchkey"; 63*4882a593Smuzhiyun reg = <0x5a>; 64*4882a593Smuzhiyun interrupt-parent = <&gpio1>; 65*4882a593Smuzhiyun interrupts = <28 2>; 66*4882a593Smuzhiyun autorepeat; 67*4882a593Smuzhiyun vdd-supply = <&ldo4_reg>; 68*4882a593Smuzhiyun linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, 69*4882a593Smuzhiyun <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>, 70*4882a593Smuzhiyun <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; 71*4882a593Smuzhiyun }; 72*4882a593Smuzhiyun }; 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun - | 75*4882a593Smuzhiyun // Example with polling 76*4882a593Smuzhiyun #include "dt-bindings/input/input.h" 77*4882a593Smuzhiyun i2c { 78*4882a593Smuzhiyun #address-cells = <1>; 79*4882a593Smuzhiyun #size-cells = <0>; 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun mpr121@5a { 82*4882a593Smuzhiyun compatible = "fsl,mpr121-touchkey"; 83*4882a593Smuzhiyun reg = <0x5a>; 84*4882a593Smuzhiyun poll-interval = <20>; 85*4882a593Smuzhiyun autorepeat; 86*4882a593Smuzhiyun vdd-supply = <&ldo4_reg>; 87*4882a593Smuzhiyun linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>, 88*4882a593Smuzhiyun <KEY_4>, <KEY_5>, <KEY_6>, <KEY_7>, 89*4882a593Smuzhiyun <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>; 90*4882a593Smuzhiyun }; 91*4882a593Smuzhiyun }; 92