xref: /linux/Documentation/devicetree/bindings/input/elan,ekth6915.yaml (revision e538d4b85b8f1e3534dfbb42c2273f18bbb59d6e) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/input/elan,ekth6915.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Elan eKTH6915 touchscreen controller
8
9maintainers:
10  - Douglas Anderson <dianders@chromium.org>
11
12description:
13  Supports the Elan eKTH6915 touchscreen controller.
14  This touchscreen controller uses the i2c-hid protocol with a reset GPIO.
15
16allOf:
17  - $ref: /schemas/input/touchscreen/touchscreen.yaml#
18
19properties:
20  compatible:
21    oneOf:
22      - items:
23          - enum:
24              - elan,ekth5015m
25          - const: elan,ekth6915
26      - const: elan,ekth6915
27
28  reg:
29    const: 0x10
30
31  interrupts:
32    maxItems: 1
33
34  panel: true
35
36  reset-gpios:
37    description: Reset GPIO; not all touchscreens using eKTH6915 hook this up.
38
39  no-reset-on-power-off:
40    type: boolean
41    description:
42      Reset line is wired so that it can (and should) be left deasserted when
43      the power supply is off.
44
45  vcc33-supply:
46    description: The 3.3V supply to the touchscreen.
47
48  vccio-supply:
49    description:
50      The IO supply to the touchscreen. Need not be specified if this is the
51      same as the 3.3V supply.
52
53required:
54  - compatible
55  - reg
56  - interrupts
57  - vcc33-supply
58
59additionalProperties: false
60
61examples:
62  - |
63    #include <dt-bindings/gpio/gpio.h>
64    #include <dt-bindings/interrupt-controller/irq.h>
65
66    i2c {
67      #address-cells = <1>;
68      #size-cells = <0>;
69
70      touchscreen@10 {
71        compatible = "elan,ekth5015m", "elan,ekth6915";
72        reg = <0x10>;
73
74        interrupt-parent = <&tlmm>;
75        interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
76
77        reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
78        vcc33-supply = <&pp3300_ts>;
79      };
80    };
81