Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml
Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml
File Facts
- System
- Linux kernel
- Corpus path
Documentation/devicetree/bindings/iio/amplifiers/adi,hmc425a.yaml- Extension
.yaml- Size
- 2723 bytes
- Lines
- 102
- Domain
- Support Tooling And Documentation
- Bucket
- Documentation
- Inferred role
- Support Tooling And Documentation: configuration, schema, or hardware description
- Status
- atlas-only
Why This File Exists
Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
- Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
Dependency Surface
dt-bindings/gpio/gpio.h
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
Annotated Snippet
# 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.
ADRF5750 2 dB LSB, 4-Bit, Silicon Digital Attenuator, 10 MHz to 60 GHz
https://www.analog.com/media/en/technical-documentation/data-sheets/adrf5740.pdf
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
LTC6373 is a 3-Bit precision instrumentation amplifier with fully differential outputs
https://www.analog.com/media/en/technical-documentation/data-sheets/ltc6373.pdf
properties:
compatible:
enum:
- adi,adrf5740
- adi,hmc425a
- adi,hmc540s
- adi,ltc6373
vcc-supply: true
ctrl-gpios:
description:
Must contain an array of GPIO specifiers, referring to the GPIO pins
connected to the control pins.
ADRF5740 - 4 GPIO connected to D2-D5
HMC540S - 4 GPIO connected to V1-V4
HMC425A - 6 GPIO connected to V1-V6
LTC6373 - 3 GPIO connected to A0-A2
minItems: 1
maxItems: 6
allOf:
- if:
properties:
compatible:
contains:
const: adi,hmc425a
then:
properties:
ctrl-gpios:
minItems: 6
maxItems: 6
- if:
properties:
compatible:
contains:
anyOf:
- const: adi,adrf5740
- const: adi,hmc540s
then:
properties:
ctrl-gpios:
minItems: 4
maxItems: 4
Annotation
- Immediate include surface: `dt-bindings/gpio/gpio.h`.
- Atlas domain: Support Tooling And Documentation / Documentation.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.