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diff --git a/Bindings/iio/amplifiers/adi,hmc425a.yaml b/Bindings/iio/amplifiers/adi,hmc425a.yaml
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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/amplifiers/adi,hmc425a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices HMC425A and similar Digital Step Attenuators
+
+maintainers:
+ - Michael Hennerich <michael.hennerich@analog.com>
+
+description: |
+ Digital Step Attenuator IIO devices with gpio interface.
+ Offer various frequency and attenuation ranges.
+ HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz
+ https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf
+
+ HMC540S 1 dB LSB Silicon MMIC 4-Bit Digital Positive Control Attenuator, 0.1 - 8 GHz
+ https://www.analog.com/media/en/technical-documentation/data-sheets/hmc540s.pdf
+
+
+properties:
+ compatible:
+ enum:
+ - adi,hmc425a
+ - adi,hmc540s
+
+ vcc-supply: true
+
+ ctrl-gpios:
+ description:
+ Must contain an array of 6 GPIO specifiers, referring to the GPIO pins
+ connected to the control pins V1-V6.
+ minItems: 6
+ maxItems: 6
+
+required:
+ - compatible
+ - ctrl-gpios
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ gpio_hmc425a: hmc425a {
+ compatible = "adi,hmc425a";
+ ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>,
+ <&gpio 39 GPIO_ACTIVE_HIGH>,
+ <&gpio 38 GPIO_ACTIVE_HIGH>,
+ <&gpio 37 GPIO_ACTIVE_HIGH>,
+ <&gpio 36 GPIO_ACTIVE_HIGH>,
+ <&gpio 35 GPIO_ACTIVE_HIGH>;
+ vcc-supply = <&foo>;
+ };
+...