1 # SPDX-License-Identifier: GPL-2.0
4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Analog Devices AD7606 Simultaneous Sampling ADC
10 - Beniamin Bia <beniamin.bia@analog.com>
11 - Stefan Popa <stefan.popa@analog.com>
14 Analog Devices AD7606 Simultaneous Sampling ADC
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
17 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
39 adi,conversion-start-gpios:
41 Must be the device tree identifier of the CONVST pin.
42 This logic input is used to initiate conversions on the analog
43 input channels. As the line is active high, it should be marked
49 Must be the device tree identifier of the RESET pin. If specified,
50 it will be asserted during driver probe. As the line is active high,
51 it should be marked GPIO_ACTIVE_HIGH.
56 Must be the device tree identifier of the STBY pin. This pin is used
57 to place the AD7606 into one of two power-down modes, Standby mode or
58 Shutdown mode. As the line is active low, it should be marked
64 Must be the device tree identifier of the FRSTDATA pin.
65 The FRSTDATA output indicates when the first channel, V1, is
66 being read back on either the parallel, byte or serial interface.
67 As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
72 Must be the device tree identifier of the RANGE pin. The polarity on
73 this pin determines the input range of the analog input channels. If
74 this pin is tied to a logic high, the analog input range is ±10V for
75 all channels. If this pin is tied to a logic low, the analog input range
76 is ±5V for all channels. As the line is active high, it should be marked
80 adi,oversampling-ratio-gpios:
82 Must be the device tree identifier of the over-sampling
83 mode pins. As the line is active high, it should be marked
89 Software mode of operation, so far available only for ad7616 and ad7606b.
90 It is enabled when all three oversampling mode pins are connected to
91 high level. The device is configured by the corresponding registers. If the
92 adi,oversampling-ratio-gpios property is defined, then the driver will set the
93 oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
103 - adi,conversion-start-gpios
107 #include <dt-bindings/gpio/gpio.h>
108 #include <dt-bindings/interrupt-controller/irq.h>
110 #address-cells = <1>;
114 compatible = "adi,ad7606-8";
116 spi-max-frequency = <1000000>;
120 avcc-supply = <&adc_vref>;
122 interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
123 interrupt-parent = <&gpio>;
125 adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
126 reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
127 adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
128 adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>,
129 <&gpio 23 GPIO_ACTIVE_HIGH>,
130 <&gpio 26 GPIO_ACTIVE_HIGH>;
131 standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;