xref: /linux/Documentation/devicetree/bindings/input/elan,ekth6915.yaml (revision c8d430db8eec7d4fd13a6bea27b7086a54eda6da) 
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      - enum:
27          - elan,ekth6915
28          - elan,ekth6a12nay
29
30  reg:
31    const: 0x10
32
33  interrupts:
34    maxItems: 1
35
36  panel: true
37
38  reset-gpios:
39    description: Reset GPIO; not all touchscreens using eKTH6915 hook this up.
40
41  no-reset-on-power-off:
42    type: boolean
43    description:
44      Reset line is wired so that it can (and should) be left deasserted when
45      the power supply is off.
46
47  vcc33-supply:
48    description: The 3.3V supply to the touchscreen.
49
50  vccio-supply:
51    description:
52      The IO supply to the touchscreen. Need not be specified if this is the
53      same as the 3.3V supply.
54
55required:
56  - compatible
57  - reg
58  - interrupts
59  - vcc33-supply
60
61additionalProperties: false
62
63examples:
64  - |
65    #include <dt-bindings/gpio/gpio.h>
66    #include <dt-bindings/interrupt-controller/irq.h>
67
68    i2c {
69      #address-cells = <1>;
70      #size-cells = <0>;
71
72      touchscreen@10 {
73        compatible = "elan,ekth5015m", "elan,ekth6915";
74        reg = <0x10>;
75
76        interrupt-parent = <&tlmm>;
77        interrupts = <9 IRQ_TYPE_LEVEL_LOW>;
78
79        reset-gpios = <&tlmm 8 GPIO_ACTIVE_LOW>;
80        vcc33-supply = <&pp3300_ts>;
81      };
82    };
83