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
7 title: Elan eKTH6915 touchscreen controller
8
9 maintainers:
10 - Douglas Anderson <dianders@chromium.org>
11
12 description:
13 Supports the Elan eKTH6915 touchscreen controller.
14 This touchscreen controller uses the i2c-hid protocol with a reset GPIO.
15
16 allOf:
17 - $ref: /schemas/input/touchscreen/touchscreen.yaml#
18
19 properties:
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
55 required:
56 - compatible
57 - reg
58 - interrupts
59 - vcc33-supply
60
61 additionalProperties: false
62
63 examples:
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 };
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