linux-kernel - [PATCH v4 0/2] iio: adc: Add AD4134 minimum I/O support

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Message-ID: <cover.1767795849.git.marcelo.schmitt@analog.com>
Date: Wed, 7 Jan 2026 11:47:14 -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>, <tomas.melin@...sala.com>,
        <marcelo.schmitt1@...il.com>
Subject: [PATCH v4 0/2] 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.

Change log v3 -> v4:
[device tree]
- Renamed clock option "xtal1-xtal2" to "xtal" (making it similar to other bindings).
- Use oneOf for ldoin-supply choice.
- Dropped properties set to their defaults from the example.
[IIO]
- Added comment about minimum ODR high time.
- Split array of regulator names
- Updated to check for "xtal" clock name.
- Simplified voltage regulator initialization logic.
- Use reset framework to get and deassert device reset.
- Dropped ad4134 IIO documentation.

Link to v3: https://lore.kernel.org/linux-iio/cover.1764708608.git.marcelo.schmitt@analog.com/
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/


Marcelo Schmitt (2):
  dt-bindings: iio: adc: Add AD4134
  iio: adc: Initial support for AD4134

 .../bindings/iio/adc/adi,ad4134.yaml          | 191 +++++++
 MAINTAINERS                                   |   8 +
 drivers/iio/adc/Kconfig                       |  11 +
 drivers/iio/adc/Makefile                      |   1 +
 drivers/iio/adc/ad4134.c                      | 501 ++++++++++++++++++
 5 files changed, 712 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/adi,ad4134.yaml
 create mode 100644 drivers/iio/adc/ad4134.c


base-commit: fb2f4eb29a258145b0336601f00509cab6e93e7c
-- 
2.51.0