2023-08-30 17:31:07 +02:00
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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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2023-10-24 12:59:35 +02:00
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$id: http://devicetree.org/schemas/input/microchip,cap11xx.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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2023-08-30 17:31:07 +02:00
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title: Microchip CAP11xx based capacitive touch sensors
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description: |
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The Microchip CAP1xxx Family of RightTouchTM multiple-channel capacitive
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touch controllers and LED drivers. The device communication via I2C only.
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maintainers:
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- Rob Herring <robh@kernel.org>
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properties:
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compatible:
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enum:
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- microchip,cap1106
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- microchip,cap1126
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- microchip,cap1188
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- microchip,cap1203
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- microchip,cap1206
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- microchip,cap1293
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- microchip,cap1298
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reg:
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maxItems: 1
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'#address-cells':
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const: 1
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'#size-cells':
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const: 0
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interrupts:
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maxItems: 1
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description: |
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Property describing the interrupt line the
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device's ALERT#/CM_IRQ# pin is connected to.
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The device only has one interrupt source.
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autorepeat:
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description: |
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Enables the Linux input system's autorepeat feature on the input device.
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linux,keycodes:
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minItems: 6
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maxItems: 6
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description: |
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Specifies an array of numeric keycode values to
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be used for the channels. If this property is
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omitted, KEY_A, KEY_B, etc are used as defaults.
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The array must have exactly six entries.
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microchip,sensor-gain:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 1
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enum: [1, 2, 4, 8]
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description: |
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Defines the gain of the sensor circuitry. This
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effectively controls the sensitivity, as a
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smaller delta capacitance is required to
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generate the same delta count values.
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microchip,irq-active-high:
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type: boolean
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description: |
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By default the interrupt pin is active low
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open drain. This property allows using the active
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high push-pull output.
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patternProperties:
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"^led@[0-7]$":
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type: object
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description: CAP11xx LEDs
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$ref: /schemas/leds/common.yaml#
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properties:
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reg:
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enum: [0, 1, 2, 3, 4, 5, 6, 7]
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label: true
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linux,default-trigger: true
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default-state: true
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required:
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- reg
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additionalProperties: false
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allOf:
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- $ref: input.yaml
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- if:
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properties:
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compatible:
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contains:
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enum:
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- microchip,cap1106
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then:
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patternProperties:
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"^led@[0-7]$": false
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required:
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- compatible
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- interrupts
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additionalProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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touch@28 {
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compatible = "microchip,cap1188";
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interrupt-parent = <&gpio1>;
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interrupts = <0 0>;
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reg = <0x28>;
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autorepeat;
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microchip,sensor-gain = <2>;
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linux,keycodes = <103>, /* KEY_UP */
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<106>, /* KEY_RIGHT */
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<108>, /* KEY_DOWN */
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<105>, /* KEY_LEFT */
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<109>, /* KEY_PAGEDOWN */
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<104>; /* KEY_PAGEUP */
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#address-cells = <1>;
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#size-cells = <0>;
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led@0 {
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label = "cap11xx:green:usr0";
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reg = <0>;
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};
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led@1 {
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label = "cap11xx:green:usr1";
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reg = <1>;
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};
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led@2 {
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label = "cap11xx:green:alive";
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reg = <2>;
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linux,default-trigger = "heartbeat";
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};
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};
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};
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