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/toradex,vf50-touchscreen.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Toradex Colibri VF50 Touchscreen
8
9 maintainers:
10 - Dmitry Torokhov <dmitry.torokhov@gmail.com>
11 - Sanchayan Maity <maitysanchayan@gmail.com>
12
13 properties:
14 compatible:
15 const: toradex,vf50-touchscreen
16
17 interrupts:
18 maxItems: 1
19
20 io-channels:
21 maxItems: 4
22 description:
23 adc channels being used by the Colibri VF50 module
24 IIO ADC for Y-, X-, Y+, X+ connections
25
26 xp-gpios:
27 description: FET gate driver for input of X+
28
29 xm-gpios:
30 description: FET gate driver for input of X-
31
32 yp-gpios:
33 description: FET gate driver for input of Y+
34
35 ym-gpios:
36 description: FET gate driver for input of Y-
37
38 vf50-ts-min-pressure:
39 $ref: /schemas/types.yaml#/definitions/uint32
40 minimum: 50
41 maximum: 2000
42 description: pressure level at which to stop measuring X/Y values
43
44 required:
45 - compatible
46 - io-channels
47 - xp-gpios
48 - xm-gpios
49 - yp-gpios
50 - ym-gpios
51 - interrupts
52 - vf50-ts-min-pressure
53
54 allOf:
55 - $ref: touchscreen.yaml#
56
57 unevaluatedProperties: false
58
59 examples:
60 - |
61 #include <dt-bindings/interrupt-controller/irq.h>
62 #include <dt-bindings/gpio/gpio.h>
63
64 touchscreen {
65 compatible = "toradex,vf50-touchscreen";
66 interrupt-parent = <&gpio0>;
67 interrupts = <8 IRQ_TYPE_LEVEL_LOW>;
68 io-channels = <&adc1 0>, <&adc0 0>, <&adc0 1>, <&adc1 2>;
69 xp-gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
70 xm-gpios = <&gpio2 29 GPIO_ACTIVE_HIGH>;
71 yp-gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
72 ym-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
73 pinctrl-names = "idle", "default";
74 pinctrl-0 = <&pinctrl_touchctrl_idle>, <&pinctrl_touchctrl_gpios>;
75 pinctrl-1 = <&pinctrl_touchctrl_default>, <&pinctrl_touchctrl_gpios>;
76 vf50-ts-min-pressure = <200>;
77 };
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