xref: /linux/Documentation/devicetree/bindings/input/touchscreen/elan,elants_i2c.yaml (revision 8c994eff8fcfe8ecb1f1dbebed25b4d7bb75be12) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/touchscreen/elan,elants_i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Elantech I2C Touchscreen
8
9maintainers:
10  - David Heidelberg <david@ixit.cz>
11
12allOf:
13  - $ref: touchscreen.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - enum:
19          - elan,ektf3624
20          - elan,ekth3500
21      - items:
22          - const: elan,ekth3915
23          - const: elan,ekth3500
24
25  reg:
26    maxItems: 1
27
28  interrupts:
29    maxItems: 1
30
31  wakeup-source:
32    type: boolean
33    description: touchscreen can be used as a wakeup source.
34
35  reset-gpios:
36    maxItems: 1
37    description: reset gpio the chip is connected to.
38
39  vcc33-supply:
40    description: a phandle for the regulator supplying 3.3V power.
41
42  vccio-supply:
43    description: a phandle for the regulator supplying IO power.
44
45  touchscreen-inverted-x: true
46  touchscreen-inverted-y: true
47  touchscreen-size-x: true
48  touchscreen-size-y: true
49  touchscreen-swapped-x-y: true
50
51additionalProperties: false
52
53required:
54  - compatible
55  - reg
56  - interrupts
57
58examples:
59  - |
60    #include <dt-bindings/interrupt-controller/irq.h>
61
62    i2c {
63        #address-cells = <1>;
64        #size-cells = <0>;
65
66        touchscreen@10 {
67            compatible = "elan,ekth3500";
68            reg = <0x10>;
69
70            interrupt-parent = <&gpio4>;
71            interrupts = <0x0 IRQ_TYPE_EDGE_FALLING>;
72            wakeup-source;
73        };
74    };
75