1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7768-1.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Analog Devices AD7768-1 ADC device driver
8
9 maintainers:
10 - Michael Hennerich <michael.hennerich@analog.com>
11
12 description: |
13 Datasheet at:
14 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7768-1.pdf
15
16 properties:
17 compatible:
18 const: adi,ad7768-1
19
20 reg:
21 maxItems: 1
22
23 clocks:
24 maxItems: 1
25
26 clock-names:
27 const: mclk
28
29 interrupts:
30 maxItems: 1
31
32 '#address-cells':
33 const: 1
34
35 '#size-cells':
36 const: 0
37
38 vref-supply:
39 description:
40 ADC reference voltage supply
41
42 adi,sync-in-gpios:
43 maxItems: 1
44 description:
45 Enables synchronization of multiple devices that require simultaneous
46 sampling. A pulse is always required if the configuration is changed
47 in any way, for example if the filter decimation rate changes.
48 As the line is active low, it should be marked GPIO_ACTIVE_LOW.
49
50 reset-gpios:
51 maxItems: 1
52
53 spi-cpol: true
54
55 spi-cpha: true
56
57 "#io-channel-cells":
58 const: 1
59
60 required:
61 - compatible
62 - reg
63 - clocks
64 - clock-names
65 - vref-supply
66 - spi-cpol
67 - spi-cpha
68 - adi,sync-in-gpios
69
70 patternProperties:
71 "^channel@([0-9]|1[0-5])$":
72 type: object
73 description: |
74 Represents the external channels which are connected to the device.
75
76 properties:
77 reg:
78 maxItems: 1
79 description: |
80 The channel number.
81
82 label:
83 description: |
84 Unique name to identify which channel this is.
85 required:
86 - reg
87 additionalProperties: false
88
89 allOf:
90 - $ref: /schemas/spi/spi-peripheral-props.yaml#
91
92 unevaluatedProperties: false
93
94 examples:
95 - |
96 #include <dt-bindings/interrupt-controller/irq.h>
97 #include <dt-bindings/gpio/gpio.h>
98 spi {
99 #address-cells = <1>;
100 #size-cells = <0>;
101
102 adc@0 {
103 compatible = "adi,ad7768-1";
104 reg = <0>;
105 spi-max-frequency = <2000000>;
106 spi-cpol;
107 spi-cpha;
108 vref-supply = <&adc_vref>;
109 interrupts = <25 IRQ_TYPE_EDGE_RISING>;
110 interrupt-parent = <&gpio>;
111 adi,sync-in-gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
112 reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
113 clocks = <&ad7768_mclk>;
114 clock-names = "mclk";
115
116 #address-cells = <1>;
117 #size-cells = <0>;
118
119 channel@0 {
120 reg = <0>;
121 label = "channel_0";
122 };
123 };
124 };
125 ...
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