Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/iio/amplifiers/adi,hmc425a.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Analog Devices HMC425A and similar Digital Step Attenuators
   8
   9 maintainers:
  10   - Michael Hennerich <michael.hennerich@analog.com>
  11
  12 description: |
  13   Digital Step Attenuator IIO devices with gpio interface.
  14   Offer various frequency and attenuation ranges.
  15   HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
  16     https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf
  17
  18   HMC540S 1 dB LSB Silicon MMIC 4-Bit Digital Positive Control Attenuator, 0.1 - 8 GHz
  19     https://www.analog.com/media/en/technical-documentation/data-sheets/hmc540s.pdf
  20
  21
  22 properties:
  23   compatible:
  24     enum:
  25       - adi,hmc425a
  26       - adi,hmc540s
  27
  28   vcc-supply: true
  29
  30   ctrl-gpios:
  31     description:
  32       Must contain an array of 6 GPIO specifiers, referring to the GPIO pins
  33       connected to the control pins V1-V6.
  34     minItems: 6
  35     maxItems: 6
  36
  37 required:
  38   - compatible
  39   - ctrl-gpios
  40
  41 additionalProperties: false
  42
  43 examples:
  44   - |
  45     #include <dt-bindings/gpio/gpio.h>
  46     gpio_hmc425a: hmc425a {
  47       compatible = "adi,hmc425a";
  48       ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>,
  49         <&gpio 39 GPIO_ACTIVE_HIGH>,
  50         <&gpio 38 GPIO_ACTIVE_HIGH>,
  51         <&gpio 37 GPIO_ACTIVE_HIGH>,
  52         <&gpio 36 GPIO_ACTIVE_HIGH>,
  53         <&gpio 35 GPIO_ACTIVE_HIGH>;
  54       vcc-supply = <&foo>;
  55     };
  56 ...