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 36examples: 37 - | 38 #include <dt-bindings/gpio/gpio.h> 39 gpio_hmc425a: hmc425a { 40 compatible = "adi,hmc425a"; 41 ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>, 42 <&gpio 39 GPIO_ACTIVE_HIGH>, 43 <&gpio 38 GPIO_ACTIVE_HIGH>, 44 <&gpio 37 GPIO_ACTIVE_HIGH>, 45 <&gpio 36 GPIO_ACTIVE_HIGH>, 46 <&gpio 35 GPIO_ACTIVE_HIGH>; 47 vcc-supply = <&foo>; 48 }; 49... 50