linux-kernel - [PATCH v3 0/3] iio: adc: Add AD4134 minimum I/O support

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Message-ID: <cover.1764708608.git.marcelo.schmitt@analog.com>
Date: Tue, 2 Dec 2025 17:54:43 -0300
From: Marcelo Schmitt <marcelo.schmitt@...log.com>
To: <linux-iio@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <jic23@...nel.org>, <nuno.sa@...log.com>, <dlechner@...libre.com>,
        <andy@...nel.org>, <Michael.Hennerich@...log.com>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <corbet@....net>,
        <marcelo.schmitt1@...il.com>
Subject: [PATCH v3 0/3] iio: adc: Add AD4134 minimum I/O support

This patch series adds basic support for ad4134. AD4134 is a very flexible
device that can be configured in many different ways. This series aims to
support the simplest way of interfacing with AD4134 which is called minimum I/O
mode in data sheet. This is essentially usual SPI with the addition of an ODR
(Output Data Rate) GPIO which functions as conversion start signal in minimum
I/O mode.

This set provides just one feature:
- Single-shot ADC sample read.

[PATCH 1] Device tree documentation for AD4134.
[PATCH 2] IIO Linux driver for AD4134.
[PATCH 3] Initial IIO documentation.

Change log v2 -> v3:
[device tree]
- fixed typo in powerdown-gpios description.
- picked up Conor's review tag. 
[IIO]
- Dropped leftover dev field from struct ad4134_state.
- Inverted if condition and reduced indentation in ad4134_regulator_setup().
- Use (MICRO / MILLI) for microvolt/milivolt conversion.
- Handled clock deferred probe cases.

Link to v2: https://lore.kernel.org/linux-iio/cover.1763478299.git.marcelo.schmitt@analog.com/
Link to v1: https://lore.kernel.org/linux-iio/cover.1762777931.git.marcelo.schmitt@analog.com/

With best regards,
Marcelo

Marcelo Schmitt (3):
  dt-bindings: iio: adc: Add AD4134
  iio: adc: Initial support for AD4134
  Docs: iio: Add AD4134

 .../bindings/iio/adc/adi,ad4134.yaml          | 198 +++++++
 Documentation/iio/ad4134.rst                  |  58 ++
 Documentation/iio/index.rst                   |   1 +
 MAINTAINERS                                   |   9 +
 drivers/iio/adc/Kconfig                       |  11 +
 drivers/iio/adc/Makefile                      |   1 +
 drivers/iio/adc/ad4134.c                      | 503 ++++++++++++++++++
 7 files changed, 781 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml
 create mode 100644 Documentation/iio/ad4134.rst
 create mode 100644 drivers/iio/adc/ad4134.c


base-commit: f9e05791642810a0cf6237d39fafd6fec5e0b4bb
-- 
2.51.0