FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/iio/adc/adi,ad7606.yaml

     # SPDX-License-Identifier: GPL-2.0
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/iio/adc/adi,ad7606.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Analog Devices AD7606 Simultaneous Sampling ADC
     
     maintainers:
      - Michael Hennerich <michael.hennerich@analog.com>
    
    description: |
      Analog Devices AD7606 Simultaneous Sampling ADC
      https://www.analog.com/media/en/technical-documentation/data-sheets/ad7606_7606-6_7606-4.pdf
      https://www.analog.com/media/en/technical-documentation/data-sheets/AD7606B.pdf
      https://www.analog.com/media/en/technical-documentation/data-sheets/AD7616.pdf
    
    properties:
      compatible:
        enum:
          - adi,ad7605-4
          - adi,ad7606-8
          - adi,ad7606-6
          - adi,ad7606-4
          - adi,ad7606b
          - adi,ad7616
    
      reg:
        maxItems: 1
    
      spi-cpha: true
    
      spi-cpol: true
    
      spi-max-frequency: true
    
      avcc-supply: true
    
      interrupts:
        maxItems: 1
    
      adi,conversion-start-gpios:
        description:
          Must be the device tree identifier of the CONVST pin.
          This logic input is used to initiate conversions on the analog
          input channels. As the line is active high, it should be marked
          GPIO_ACTIVE_HIGH.
        maxItems: 1
    
      reset-gpios:
        description:
          Must be the device tree identifier of the RESET pin. If specified,
          it will be asserted during driver probe. As the line is active high,
          it should be marked GPIO_ACTIVE_HIGH.
        maxItems: 1
    
      standby-gpios:
        description:
          Must be the device tree identifier of the STBY pin. This pin is used
          to place the AD7606 into one of two power-down modes, Standby mode or
          Shutdown mode. As the line is active low, it should be marked
          GPIO_ACTIVE_LOW.
        maxItems: 1
    
      adi,first-data-gpios:
        description:
          Must be the device tree identifier of the FRSTDATA pin.
          The FRSTDATA output indicates when the first channel, V1, is
          being read back on either the parallel, byte or serial interface.
          As the line is active high, it should be marked GPIO_ACTIVE_HIGH.
        maxItems: 1
    
      adi,range-gpios:
        description:
          Must be the device tree identifier of the RANGE pin. The polarity on
          this pin determines the input range of the analog input channels. If
          this pin is tied to a logic high, the analog input range is ±10V for
          all channels. If this pin is tied to a logic low, the analog input range
          is ±5V for all channels. As the line is active high, it should be marked
          GPIO_ACTIVE_HIGH.
        maxItems: 1
    
      adi,oversampling-ratio-gpios:
        description:
          Must be the device tree identifier of the over-sampling
          mode pins. As the line is active high, it should be marked
          GPIO_ACTIVE_HIGH.
        maxItems: 3
    
      adi,sw-mode:
        description:
          Software mode of operation, so far available only for ad7616 and ad7606b.
          It is enabled when all three oversampling mode pins are connected to
          high level. The device is configured by the corresponding registers. If the
          adi,oversampling-ratio-gpios property is defined, then the driver will set the
          oversampling gpios to high. Otherwise, it is assumed that the pins are hardwired
          to VDD.
        type: boolean
    
   required:
     - compatible
     - reg
     - spi-cpha
     - avcc-supply
     - interrupts
     - adi,conversion-start-gpios
   
   additionalProperties: false
   
   examples:
     - |
       #include <dt-bindings/gpio/gpio.h>
       #include <dt-bindings/interrupt-controller/irq.h>
       spi0 {
           #address-cells = <1>;
           #size-cells = <0>;
   
           adc@0 {
                   compatible = "adi,ad7606-8";
                   reg = <0>;
                   spi-max-frequency = <1000000>;
                   spi-cpol;
                   spi-cpha;
   
                   avcc-supply = <&adc_vref>;
   
                   interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
                   interrupt-parent = <&gpio>;
   
                   adi,conversion-start-gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
                   reset-gpios = <&gpio 27 GPIO_ACTIVE_HIGH>;
                   adi,first-data-gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
                   adi,oversampling-ratio-gpios = <&gpio 18 GPIO_ACTIVE_HIGH>,
                                                  <&gpio 23 GPIO_ACTIVE_HIGH>,
                                                  <&gpio 26 GPIO_ACTIVE_HIGH>;
                   standby-gpios = <&gpio 24 GPIO_ACTIVE_LOW>;
                   adi,sw-mode;
           };
       };
   ...

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