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