1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/input/elan,ekth3000.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Elantech I2C Touchpad
8
9 maintainers:
10 - Dmitry Torokhov <dmitry.torokhov@gmail.com>
11
12 allOf:
13 - $ref: touchscreen/touchscreen.yaml#
14
15 properties:
16 compatible:
17 const: elan,ekth3000
18
19 reg:
20 maxItems: 1
21
22 interrupts:
23 maxItems: 1
24
25 wakeup-source:
26 type: boolean
27 description: touchpad can be used as a wakeup source
28
29 vcc-supply:
30 description: a phandle for the regulator supplying 3.3V power
31
32 elan,trackpoint:
33 type: boolean
34 description: touchpad can support a trackpoint
35
36 elan,clickpad:
37 type: boolean
38 description: touchpad is a clickpad (the entire surface is a button)
39
40 elan,middle-button:
41 type: boolean
42 description: touchpad has a physical middle button
43
44 elan,x_traces:
45 $ref: /schemas/types.yaml#/definitions/uint32
46 description: number of antennas on the x axis
47
48 elan,y_traces:
49 $ref: /schemas/types.yaml#/definitions/uint32
50 description: number of antennas on the y axis
51
52 touchscreen-size-x: true
53
54 touchscreen-size-y: true
55
56 touchscreen-x-mm: true
57
58 touchscreen-y-mm: true
59
60 required:
61 - compatible
62 - reg
63 - interrupts
64
65 additionalProperties: false
66
67 examples:
68 - |
69 #include <dt-bindings/interrupt-controller/irq.h>
70 i2c {
71 #address-cells = <1>;
72 #size-cells = <0>;
73
74 touchpad@15 {
75 compatible = "elan,ekth3000";
76 reg = <0x15>;
77 interrupt-parent = <&gpio4>;
78 interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
79 wakeup-source;
80 };
81 };
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