| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/input/microchip,cap11xx.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Microchip CAP11xx based capacitive touch sensors |
| 8 | |
| 9 | description: | |
| 10 | The Microchip CAP1xxx Family of RightTouchTM multiple-channel capacitive |
| 11 | touch controllers and LED drivers. The device communication via I2C only. |
| 12 | |
| 13 | maintainers: |
| 14 | - Rob Herring <robh@kernel.org> |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | enum: |
| 19 | - microchip,cap1106 |
| 20 | - microchip,cap1126 |
| 21 | - microchip,cap1188 |
| 22 | - microchip,cap1203 |
| 23 | - microchip,cap1206 |
| 24 | - microchip,cap1293 |
| 25 | - microchip,cap1298 |
| 26 | |
| 27 | reg: |
| 28 | maxItems: 1 |
| 29 | |
| 30 | '#address-cells': |
| 31 | const: 1 |
| 32 | |
| 33 | '#size-cells': |
| 34 | const: 0 |
| 35 | |
| 36 | interrupts: |
| 37 | maxItems: 1 |
| 38 | description: | |
| 39 | Property describing the interrupt line the |
| 40 | device's ALERT#/CM_IRQ# pin is connected to. |
| 41 | The device only has one interrupt source. |
| 42 | |
| 43 | autorepeat: |
| 44 | description: | |
| 45 | Enables the Linux input system's autorepeat feature on the input device. |
| 46 | |
| 47 | linux,keycodes: |
| 48 | minItems: 6 |
| 49 | maxItems: 6 |
| 50 | description: | |
| 51 | Specifies an array of numeric keycode values to |
| 52 | be used for the channels. If this property is |
| 53 | omitted, KEY_A, KEY_B, etc are used as defaults. |
| 54 | The array must have exactly six entries. |
| 55 | |
| 56 | microchip,sensor-gain: |
| 57 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 58 | default: 1 |
| 59 | enum: [1, 2, 4, 8] |
| 60 | description: | |
| 61 | Defines the gain of the sensor circuitry. This |
| 62 | effectively controls the sensitivity, as a |
| 63 | smaller delta capacitance is required to |
| 64 | generate the same delta count values. |
| 65 | |
| 66 | microchip,irq-active-high: |
| 67 | type: boolean |
| 68 | description: | |
| 69 | By default the interrupt pin is active low |
| 70 | open drain. This property allows using the active |
| 71 | high push-pull output. |
| 72 | |
| 73 | patternProperties: |
| 74 | "^led@[0-7]$": |
| 75 | type: object |
| 76 | description: CAP11xx LEDs |
| 77 | $ref: /schemas/leds/common.yaml# |
| 78 | |
| 79 | properties: |
| 80 | reg: |
| 81 | enum: [0, 1, 2, 3, 4, 5, 6, 7] |
| 82 | |
| 83 | label: true |
| 84 | |
| 85 | linux,default-trigger: true |
| 86 | |
| 87 | default-state: true |
| 88 | |
| 89 | required: |
| 90 | - reg |
| 91 | |
| 92 | additionalProperties: false |
| 93 | |
| 94 | allOf: |
| 95 | - $ref: input.yaml |
| 96 | - if: |
| 97 | properties: |
| 98 | compatible: |
| 99 | contains: |
| 100 | enum: |
| 101 | - microchip,cap1106 |
| 102 | then: |
| 103 | patternProperties: |
| 104 | "^led@[0-7]$": false |
| 105 | |
| 106 | required: |
| 107 | - compatible |
| 108 | - interrupts |
| 109 | |
| 110 | additionalProperties: false |
| 111 | |
| 112 | examples: |
| 113 | - | |
| 114 | i2c { |
| 115 | #address-cells = <1>; |
| 116 | #size-cells = <0>; |
| 117 | |
| 118 | touch@28 { |
| 119 | compatible = "microchip,cap1188"; |
| 120 | interrupt-parent = <&gpio1>; |
| 121 | interrupts = <0 0>; |
| 122 | reg = <0x28>; |
| 123 | autorepeat; |
| 124 | microchip,sensor-gain = <2>; |
| 125 | |
| 126 | linux,keycodes = <103>, /* KEY_UP */ |
| 127 | <106>, /* KEY_RIGHT */ |
| 128 | <108>, /* KEY_DOWN */ |
| 129 | <105>, /* KEY_LEFT */ |
| 130 | <109>, /* KEY_PAGEDOWN */ |
| 131 | <104>; /* KEY_PAGEUP */ |
| 132 | |
| 133 | #address-cells = <1>; |
| 134 | #size-cells = <0>; |
| 135 | |
| 136 | led@0 { |
| 137 | label = "cap11xx:green:usr0"; |
| 138 | reg = <0>; |
| 139 | }; |
| 140 | |
| 141 | led@1 { |
| 142 | label = "cap11xx:green:usr1"; |
| 143 | reg = <1>; |
| 144 | }; |
| 145 | |
| 146 | led@2 { |
| 147 | label = "cap11xx:green:alive"; |
| 148 | reg = <2>; |
| 149 | linux,default-trigger = "heartbeat"; |
| 150 | }; |
| 151 | }; |
| 152 | }; |