linux-kernel - [PATCH v8 0/8] Add SPI offload support to AD4030

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Message-ID: <cover.1770403407.git.marcelo.schmitt@analog.com>
Date: Fri, 6 Feb 2026 15:59:58 -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>, <michael.hennerich@...log.com>, <nuno.sa@...log.com>,
        <eblanc@...libre.com>, <dlechner@...libre.com>, <andy@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <corbet@....net>, <marcelo.schmitt1@...il.com>
Subject: [PATCH v8 0/8] Add SPI offload support to AD4030

This set adds high speed data capture with AD4030/AD4630 and similar ADCs. It
also adds support for ADAQ4216 and ADAQ4224.

Change log v7 -> v8
Rebased on top of spi-multi-lane change set [1].
Requires ("units: Add HZ_PER_GHZ") patch to build [2].
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git tags/spi-multi-lane
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/include/linux/units.h?h=next-20260204&id=5083dba0fde5446c00ee1a82a3911c8f88a2c72e
[DT]
- Fixed issues reported by dt_binding_check.
[IIO]
- Added comment in the list of available average modes to prevent regrouping in the future.
- Minor tidy up for macro consistency and fewer blank lines.
- Reuse dev pointer in probe().
- Refactor to check -ENODEV only once.
- Grouped includes for features from IIO subsystem.
- Downgraded offload_period_ns type and use DIV_ROUND_UP() instead of DIV_ROUND_UP_ULL().
- Use HZ_PER_GHZ.

Link to v7: https://lore.kernel.org/linux-iio/cover.1770309522.git.marcelo.schmitt@analog.com/T/#mc0285fb4750e57582f96584dd98d90163521c7b8

Thanks,
Marcelo

Marcelo Schmitt (8):
  dt-bindings: iio: adc: adi,ad4030: Reference spi-peripheral-props
  Docs: iio: ad4030: Add double PWM SPI offload doc
  dt-bindings: iio: adc: adi,ad4030: Add PWM
  iio: adc: ad4030: Use BIT macro to improve code readability
  iio: adc: ad4030: Add SPI offload support
  dt-bindings: iio: adc: adi,ad4030: Add ADAQ4216 and ADAQ4224
  iio: adc: ad4030: Add support for ADAQ4216 and ADAQ4224
  iio: adc: ad4030: Support common-mode channels with SPI offloading

 .../bindings/iio/adc/adi,ad4030.yaml          |  64 ++
 Documentation/iio/ad4030.rst                  |  39 ++
 drivers/iio/adc/Kconfig                       |   5 +
 drivers/iio/adc/ad4030.c                      | 642 +++++++++++++++++-
 4 files changed, 727 insertions(+), 23 deletions(-)


base-commit: 0ec5ed7c95d1ba6a74491928ff38abb351dbed36
prerequisite-patch-id: f3b2f63f86731322c9b10e1bae0952a12219258a
-- 
2.39.2