Documentation/iio/ad4695.rst

Source file repositories/reference/linux-study-clean/Documentation/iio/ad4695.rst

File Facts

System: Linux kernel
Corpus path: Documentation/iio/ad4695.rst
Extension: .rst
Size: 9668 bytes
Lines: 270
Domain: Support Tooling And Documentation
Bucket: Documentation
Inferred role: Support Tooling And Documentation: documentation
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/iio/adc/adi,ad4695.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

=============
AD4695 driver
=============

ADC driver for Analog Devices Inc. AD4695 and similar devices. The module name
is ``ad4695``.


Supported devices
=================

The following chips are supported by this driver:

* `AD4695 <https://www.analog.com/AD4695>`_
* `AD4696 <https://www.analog.com/AD4696>`_
* `AD4697 <https://www.analog.com/AD4697>`_
* `AD4698 <https://www.analog.com/AD4698>`_


Supported features
==================

SPI wiring modes
----------------

The driver currently supports the following SPI wiring configuration:

4-wire mode
^^^^^^^^^^^

In this mode, CNV and CS are tied together and there is a single SDO line.

.. code-block::

    +-------------+         +-------------+
    |          CS |<-+------| CS          |
    |         CNV |<-+      |             |
    |     ADC     |         |     HOST    |
    |             |         |             |
    |         SDI |<--------| SDO         |
    |         SDO |-------->| SDI         |
    |        SCLK |<--------| SCLK        |
    +-------------+         +-------------+

To use this mode, in the device tree, omit the ``cnv-gpios`` and
``spi-rx-bus-width`` properties.

SPI offload wiring
^^^^^^^^^^^^^^^^^^

When used with a SPI offload, the supported wiring configuration is:

.. code-block::

    +-------------+         +-------------+
    |    GP0/BUSY |-------->| TRIGGER     |
    |          CS |<--------| CS          |
    |             |         |             |
    |     ADC     |         |     SPI     |
    |             |         |             |
    |         SDI |<--------| SDO         |
    |         SDO |-------->| SDI         |
    |        SCLK |<--------| SCLK        |
    |             |         |             |
    |             |         +-------------+
    |         CNV |<-----+--| PWM         |
    |             |      +--| GPIO        |
    +-------------+         +-------------+

Annotation

Immediate include surface: `dt-bindings/iio/adc/adi,ad4695.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.