1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/ti,tsc2046.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Texas Instruments TSC2046 touch screen controller.
8
9 maintainers:
10 - Oleksij Rempel <o.rempel@pengutronix.de>
11
12 description: |
13 TSC2046 is a touch screen controller with 8 channels ADC.
14
15 properties:
16 compatible:
17 enum:
18 - ti,tsc2046e-adc
19
20 reg:
21 maxItems: 1
22
23 interrupts:
24 maxItems: 1
25
26 vref-supply:
27 description: Optional supply of the reference voltage
28
29 "#io-channel-cells":
30 const: 1
31
32 '#address-cells':
33 const: 1
34
35 '#size-cells':
36 const: 0
37
38 required:
39 - compatible
40 - reg
41
42 patternProperties:
43 "^channel@[0-7]$":
44 $ref: adc.yaml
45 type: object
46
47 properties:
48 reg:
49 description: |
50 The channel number. It can have up to 8 channels
51 items:
52 minimum: 0
53 maximum: 7
54
55 settling-time-us: true
56 oversampling-ratio: true
57
58 required:
59 - reg
60
61 additionalProperties: false
62
63 allOf:
64 - $ref: /schemas/spi/spi-peripheral-props.yaml#
65
66 unevaluatedProperties: false
67
68 examples:
69 - |
70 #include <dt-bindings/interrupt-controller/irq.h>
71 spi {
72 #address-cells = <1>;
73 #size-cells = <0>;
74
75 adc@0 {
76 compatible = "ti,tsc2046e-adc";
77 reg = <0>;
78 spi-max-frequency = <1000000>;
79 interrupts-extended = <&gpio3 20 IRQ_TYPE_LEVEL_LOW>;
80 #io-channel-cells = <1>;
81
82 #address-cells = <1>;
83 #size-cells = <0>;
84
85 channel@0 {
86 reg = <0>;
87 };
88 channel@1 {
89 reg = <1>;
90 settling-time-us = <700>;
91 oversampling-ratio = <5>;
92 };
93 channel@2 {
94 reg = <2>;
95 };
96 channel@3 {
97 reg = <3>;
98 settling-time-us = <700>;
99 oversampling-ratio = <5>;
100 };
101 channel@4 {
102 reg = <4>;
103 settling-time-us = <700>;
104 oversampling-ratio = <5>;
105 };
106 channel@5 {
107 reg = <5>;
108 settling-time-us = <700>;
109 oversampling-ratio = <5>;
110 };
111 channel@6 {
112 reg = <6>;
113 };
114 channel@7 {
115 reg = <7>;
116 };
117 };
118 };
119 ...
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