18aba2539SMichael Hennerich# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 28aba2539SMichael Hennerich%YAML 1.2 38aba2539SMichael Hennerich--- 48aba2539SMichael Hennerich$id: http://devicetree.org/schemas/iio/amplifiers/adi,hmc425a.yaml# 58aba2539SMichael Hennerich$schema: http://devicetree.org/meta-schemas/core.yaml# 68aba2539SMichael Hennerich 78aba2539SMichael Hennerichtitle: HMC425A 6-bit Digital Step Attenuator 88aba2539SMichael Hennerich 98aba2539SMichael Hennerichmaintainers: 108aba2539SMichael Hennerich - Michael Hennerich <michael.hennerich@analog.com> 118aba2539SMichael Hennerich 128aba2539SMichael Hennerichdescription: | 138aba2539SMichael Hennerich Digital Step Attenuator IIO device with gpio interface. 148aba2539SMichael Hennerich HMC425A 0.5 dB LSB GaAs MMIC 6-BIT DIGITAL POSITIVE CONTROL ATTENUATOR, 2.2 - 8.0 GHz 158aba2539SMichael Hennerich https://www.analog.com/media/en/technical-documentation/data-sheets/hmc425A.pdf 168aba2539SMichael Hennerich 178aba2539SMichael Hennerichproperties: 188aba2539SMichael Hennerich compatible: 198aba2539SMichael Hennerich enum: 208aba2539SMichael Hennerich - adi,hmc425a 218aba2539SMichael Hennerich 228aba2539SMichael Hennerich vcc-supply: true 238aba2539SMichael Hennerich 248aba2539SMichael Hennerich ctrl-gpios: 258aba2539SMichael Hennerich description: 268aba2539SMichael Hennerich Must contain an array of 6 GPIO specifiers, referring to the GPIO pins 278aba2539SMichael Hennerich connected to the control pins V1-V6. 288aba2539SMichael Hennerich minItems: 6 298aba2539SMichael Hennerich maxItems: 6 308aba2539SMichael Hennerich 318aba2539SMichael Hennerichrequired: 328aba2539SMichael Hennerich - compatible 338aba2539SMichael Hennerich - ctrl-gpios 348aba2539SMichael Hennerich 35*5be478f9SRob HerringadditionalProperties: false 36*5be478f9SRob Herring 378aba2539SMichael Hennerichexamples: 388aba2539SMichael Hennerich - | 398aba2539SMichael Hennerich #include <dt-bindings/gpio/gpio.h> 408aba2539SMichael Hennerich gpio_hmc425a: hmc425a { 418aba2539SMichael Hennerich compatible = "adi,hmc425a"; 428aba2539SMichael Hennerich ctrl-gpios = <&gpio 40 GPIO_ACTIVE_HIGH>, 438aba2539SMichael Hennerich <&gpio 39 GPIO_ACTIVE_HIGH>, 448aba2539SMichael Hennerich <&gpio 38 GPIO_ACTIVE_HIGH>, 458aba2539SMichael Hennerich <&gpio 37 GPIO_ACTIVE_HIGH>, 468aba2539SMichael Hennerich <&gpio 36 GPIO_ACTIVE_HIGH>, 478aba2539SMichael Hennerich <&gpio 35 GPIO_ACTIVE_HIGH>; 488aba2539SMichael Hennerich vcc-supply = <&foo>; 498aba2539SMichael Hennerich }; 508aba2539SMichael Hennerich... 51