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 12description: | 13 Digital Step Attenuator IIO device with gpio interface. 14 HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz 15 https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf 16 17properties: 18 compatible: 19 enum: 20 - adi,hmc425a 21 22 vcc-supply: true 23 24 ctrl-gpios: 25 description: 26 Must contain an array of 6 GPIO specifiers, referring to the GPIO pins 27 connected to the control pins V1-V6. 28 minItems: 6 29 maxItems: 6 30 31required: 32 - compatible 33 - ctrl-gpios 34 35additionalProperties: false 36 37examples: 38 - | 39 #include <dt-bindings/gpio/gpio.h> 40 gpio_hmc425a: hmc425a { 41 compatible = "adi,hmc425a"; 42 ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>, 43 <&gpio 39 GPIO_ACTIVE_HIGH>, 44 <&gpio 38 GPIO_ACTIVE_HIGH>, 45 <&gpio 37 GPIO_ACTIVE_HIGH>, 46 <&gpio 36 GPIO_ACTIVE_HIGH>, 47 <&gpio 35 GPIO_ACTIVE_HIGH>; 48 vcc-supply = <&foo>; 49 }; 50... 51