1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/ti,ads1119.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Texas Instruments ADS1119 ADC
8
9 maintainers:
10 - João Paulo Gonçalves <jpaulo.silvagoncalves@gmail.com>
11
12 description:
13 The TI ADS1119 is a precision 16-bit ADC over I2C that offers single-ended and
14 differential measurements using a multiplexed input. It features a programmable
15 gain, a programmable sample rate, an internal oscillator and voltage reference,
16 and a 50/60Hz rejection filter.
17
18 properties:
19 compatible:
20 const: ti,ads1119
21
22 reg:
23 maxItems: 1
24
25 interrupts:
26 maxItems: 1
27
28 reset-gpios:
29 maxItems: 1
30
31 avdd-supply: true
32 dvdd-supply: true
33
34 vref-supply:
35 description:
36 ADC external reference voltage (VREF).
37
38 "#address-cells":
39 const: 1
40
41 "#size-cells":
42 const: 0
43
44 "#io-channel-cells":
45 const: 1
46
47 required:
48 - compatible
49 - reg
50 - "#address-cells"
51 - "#size-cells"
52 - avdd-supply
53 - dvdd-supply
54
55 patternProperties:
56 "^channel@([0-6])$":
57 $ref: adc.yaml
58 type: object
59 properties:
60 reg:
61 minimum: 0
62 maximum: 6
63
64 diff-channels:
65 description:
66 Differential input channels AIN0-AIN1, AIN2-AIN3 and AIN1-AIN2.
67 oneOf:
68 - items:
69 - const: 0
70 - const: 1
71 - items:
72 - const: 2
73 - const: 3
74 - items:
75 - const: 1
76 - const: 2
77
78 single-channel:
79 description:
80 Single-ended input channels AIN0, AIN1, AIN2 and AIN3.
81 minimum: 0
82 maximum: 3
83
84 oneOf:
85 - required:
86 - diff-channels
87 - required:
88 - single-channel
89
90 required:
91 - reg
92
93 unevaluatedProperties: false
94
95 additionalProperties: false
96
97 examples:
98 - |
99
100 #include <dt-bindings/gpio/gpio.h>
101 #include <dt-bindings/interrupt-controller/irq.h>
102
103 i2c {
104 #address-cells = <1>;
105 #size-cells = <0>;
106
107 adc@40 {
108 compatible = "ti,ads1119";
109 reg = <0x40>;
110 interrupt-parent = <&gpio1>;
111 interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
112 reset-gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
113 avdd-supply = <®_avdd_ads1119>;
114 dvdd-supply = <®_dvdd_ads1119>;
115 vref-supply = <®_vref_ads1119>;
116 #address-cells = <1>;
117 #size-cells = <0>;
118 #io-channel-cells = <1>;
119
120 channel@0 {
121 reg = <0>;
122 single-channel = <0>;
123 };
124
125 channel@1 {
126 reg = <1>;
127 diff-channels = <0 1>;
128 };
129
130 channel@2 {
131 reg = <2>;
132 single-channel = <3>;
133 };
134
135 channel@3 {
136 reg = <3>;
137 single-channel = <1>;
138 };
139
140 channel@4 {
141 reg = <4>;
142 single-channel = <2>;
143 };
144
145 channel@5 {
146 reg = <5>;
147 diff-channels = <1 2>;
148 };
149
150 channel@6 {
151 reg = <6>;
152 diff-channels = <2 3>;
153 };
154 };
155 };
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