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
7title: HMC425A 6-bit Digital Step Attenuator
8
9maintainers:
10  - Michael Hennerich <michael.hennerich@analog.com>
11  - Beniamin Bia <beniamin.bia@analog.com>
12
13description: |
14  Digital Step Attenuator IIO device with gpio interface.
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
18properties:
19  compatible:
20    enum:
21      - adi,hmc425a
22
23  vcc-supply: true
24
25  ctrl-gpios:
26    description:
27      Must contain an array of 6 GPIO specifiers, referring to the GPIO pins
28      connected to the control pins V1-V6.
29    minItems: 6
30    maxItems: 6
31
32required:
33  - compatible
34  - ctrl-gpios
35
36additionalProperties: false
37
38examples:
39  - |
40    #include <dt-bindings/gpio/gpio.h>
41    gpio_hmc425a: hmc425a {
42      compatible = "adi,hmc425a";
43      ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>,
44        <&gpio 39 GPIO_ACTIVE_HIGH>,
45        <&gpio 38 GPIO_ACTIVE_HIGH>,
46        <&gpio 37 GPIO_ACTIVE_HIGH>,
47        <&gpio 36 GPIO_ACTIVE_HIGH>,
48        <&gpio 35 GPIO_ACTIVE_HIGH>;
49      vcc-supply = <&foo>;
50    };
51...
52