1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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,ad7091r5.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Analog Devices AD7091R-2/-4/-5/-8 Multi 7 title: Analog Devices AD7091R-2/-4/-5/-8 Multi-Channel 12-Bit ADCs
8 8
9 maintainers: 9 maintainers:
10 - Michael Hennerich <michael.hennerich@analog 10 - Michael Hennerich <michael.hennerich@analog.com>
11 - Marcelo Schmitt <marcelo.schmitt@analog.com 11 - Marcelo Schmitt <marcelo.schmitt@analog.com>
12 12
13 description: | 13 description: |
14 Analog Devices AD7091R5 4-Channel 12-Bit ADC 14 Analog Devices AD7091R5 4-Channel 12-Bit ADC supporting I2C interface
15 https://www.analog.com/media/en/technical-do 15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7091r-5.pdf
16 Analog Devices AD7091R-2/AD7091R-4/AD7091R-8 16 Analog Devices AD7091R-2/AD7091R-4/AD7091R-8 2-/4-/8-Channel 12-Bit ADCs
17 supporting SPI interface 17 supporting SPI interface
18 https://www.analog.com/media/en/technical-do 18 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7091R-2_7091R-4_7091R-8.pdf
19 19
20 properties: 20 properties:
21 compatible: 21 compatible:
22 enum: 22 enum:
23 - adi,ad7091r2 23 - adi,ad7091r2
24 - adi,ad7091r4 24 - adi,ad7091r4
25 - adi,ad7091r5 25 - adi,ad7091r5
26 - adi,ad7091r8 26 - adi,ad7091r8
27 27
28 reg: 28 reg:
29 maxItems: 1 29 maxItems: 1
30 30
31 vdd-supply: 31 vdd-supply:
32 description: 32 description:
33 Provide VDD power to the sensor (VDD ran 33 Provide VDD power to the sensor (VDD range is from 2.7V to 5.25V).
34 34
35 vdrive-supply: 35 vdrive-supply:
36 description: 36 description:
37 Determines the voltage level at which th 37 Determines the voltage level at which the interface logic will operate.
38 The V_drive voltage range is from 1.8V t 38 The V_drive voltage range is from 1.8V to 5.25V and must not exceed VDD by
39 more than 0.3V. 39 more than 0.3V.
40 40
41 vref-supply: 41 vref-supply:
42 description: 42 description:
43 Phandle to the vref power supply 43 Phandle to the vref power supply
44 44
45 convst-gpios: 45 convst-gpios:
46 description: 46 description:
47 GPIO connected to the CONVST pin. 47 GPIO connected to the CONVST pin.
48 This logic input is used to initiate con 48 This logic input is used to initiate conversions on the analog
49 input channels. 49 input channels.
50 maxItems: 1 50 maxItems: 1
51 51
52 reset-gpios: 52 reset-gpios:
53 maxItems: 1 53 maxItems: 1
54 54
55 interrupts: 55 interrupts:
56 description: 56 description:
57 Interrupt for signaling when conversion 57 Interrupt for signaling when conversion results exceed the high limit for
58 ADC readings or fall below the low limit 58 ADC readings or fall below the low limit for them. Interrupt source must
59 be attached to ALERT/BUSY/GPO0 pin. 59 be attached to ALERT/BUSY/GPO0 pin.
60 maxItems: 1 60 maxItems: 1
61 61
62 required: 62 required:
63 - compatible 63 - compatible
64 - reg 64 - reg
65 65
66 allOf: 66 allOf:
67 - $ref: /schemas/spi/spi-peripheral-props.ya 67 - $ref: /schemas/spi/spi-peripheral-props.yaml#
68 68
69 # AD7091R-2 does not have ALERT/BUSY/GPO pin 69 # AD7091R-2 does not have ALERT/BUSY/GPO pin
70 - if: 70 - if:
71 properties: 71 properties:
72 compatible: 72 compatible:
73 contains: 73 contains:
74 enum: 74 enum:
75 - adi,ad7091r2 75 - adi,ad7091r2
76 then: 76 then:
77 properties: 77 properties:
78 interrupts: false 78 interrupts: false
79 79
80 - if: 80 - if:
81 properties: 81 properties:
82 compatible: 82 compatible:
83 contains: 83 contains:
84 enum: 84 enum:
85 - adi,ad7091r2 85 - adi,ad7091r2
86 - adi,ad7091r4 86 - adi,ad7091r4
87 - adi,ad7091r8 87 - adi,ad7091r8
88 then: 88 then:
89 required: 89 required:
90 - convst-gpios 90 - convst-gpios
91 91
92 unevaluatedProperties: false 92 unevaluatedProperties: false
93 93
94 examples: 94 examples:
95 - | 95 - |
96 #include <dt-bindings/gpio/gpio.h> 96 #include <dt-bindings/gpio/gpio.h>
97 #include <dt-bindings/interrupt-controller 97 #include <dt-bindings/interrupt-controller/irq.h>
98 i2c { 98 i2c {
99 #address-cells = <1>; 99 #address-cells = <1>;
100 #size-cells = <0>; 100 #size-cells = <0>;
101 101
102 adc@2f { 102 adc@2f {
103 compatible = "adi,ad7091r5"; 103 compatible = "adi,ad7091r5";
104 reg = <0x2f>; 104 reg = <0x2f>;
105 105
106 interrupts = <25 IRQ_TYPE_EDGE_FAL 106 interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
107 interrupt-parent = <&gpio>; 107 interrupt-parent = <&gpio>;
108 }; 108 };
109 }; 109 };
110 - | 110 - |
111 #include <dt-bindings/gpio/gpio.h> 111 #include <dt-bindings/gpio/gpio.h>
112 #include <dt-bindings/interrupt-controller 112 #include <dt-bindings/interrupt-controller/irq.h>
113 spi { 113 spi {
114 #address-cells = <1>; 114 #address-cells = <1>;
115 #size-cells = <0>; 115 #size-cells = <0>;
116 116
117 adc@0 { 117 adc@0 {
118 compatible = "adi,ad7091r8"; 118 compatible = "adi,ad7091r8";
119 reg = <0x0>; 119 reg = <0x0>;
120 spi-max-frequency = <1000000>; 120 spi-max-frequency = <1000000>;
121 vref-supply = <&adc_vref>; 121 vref-supply = <&adc_vref>;
122 convst-gpios = <&gpio 25 GPIO_ACTI 122 convst-gpios = <&gpio 25 GPIO_ACTIVE_LOW>;
123 reset-gpios = <&gpio 27 GPIO_ACTIV 123 reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
124 interrupts = <22 IRQ_TYPE_EDGE_FAL 124 interrupts = <22 IRQ_TYPE_EDGE_FALLING>;
125 interrupt-parent = <&gpio>; 125 interrupt-parent = <&gpio>;
126 }; 126 };
127 }; 127 };
128 ... 128 ...
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