linux-kernel - [PATCH v5 0/8] ADF41513/ADF41510 PLL frequency synthesizers

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Message-Id: <20260123-adf41513-iio-driver-v5-0-2dce812a2dda@analog.com>
Date: Fri, 23 Jan 2026 15:53:05 +0000
From: Rodrigo Alencar via B4 Relay <devnull+rodrigo.alencar.analog.com@...nel.org>
To: linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-doc@...r.kernel.org
Cc: Jonathan Cameron <jic23@...nel.org>, 
 David Lechner <dlechner@...libre.com>, Andy Shevchenko <andy@...nel.org>, 
 Lars-Peter Clausen <lars@...afoo.de>, 
 Michael Hennerich <Michael.Hennerich@...log.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Jonathan Corbet <corbet@....net>, 
 Rodrigo Alencar <rodrigo.alencar@...log.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@....qualcomm.com>
Subject: [PATCH v5 0/8] ADF41513/ADF41510 PLL frequency synthesizers

This patch series adds support for the Analog Devices ADF41513 and ADF41510
ultralow noise PLL frequency synthesizers. These devices are designed for
implementing local oscillators (LOs) in high-frequency applications.
The ADF41513 covers frequencies from 1 GHz to 26.5 GHz, while the ADF41510
operates from 1 GHz to 10 GHz.

Key features supported by this driver:
- Integer-N and fractional-N operation modes
- High maximum PFD frequency (250 MHz integer-N, 125 MHz fractional-N)
- 25-bit fixed modulus or 49-bit variable modulus fractional modes
- Digital lock detect functionality
- Phase resync capability for consistent output phase
- Load Enable vs Reference signal syncronization

The series includes:
1. PLL driver implementation
2. Device tree bindings documentation
3. IIO ABI documentation

Signed-off-by: Rodrigo Alencar <rodrigo.alencar@...log.com>
---
Changes in v5:
- Drop local parsing of 64-bit plus fractional parts
- Add iio_str_to_fixpoint64() to iio core with parsing tests
- Add DT property dependency for adi,charge-pump-resistor-ohms
- Add local definition for ADF41513_HZ_PER_GHZ and drop units.h patch
- Link to v4: https://lore.kernel.org/r/20260116-adf41513-iio-driver-v4-0-dbb7d6782217@analog.com

Changes in v4:
- Proper usage of units.h macros
- Simplifications to DT property parsing
- Adjustments to return value handling
- Drop of simple DT property node example
- Link to v3: https://lore.kernel.org/r/20260108-adf41513-iio-driver-v3-0-23d1371aef48@analog.com

Changes in v3:
- Use FIELD_MODIFY macro in driver implementation
- Drop refin_frequency iio attribute
- Drop muxout-select property from dt-bindings (and rename logic-level property)
- Use -mhz suffix in power-up frequency property
- Address documentation issues
- Link to v2: https://lore.kernel.org/r/20251219-adf41513-iio-driver-v2-0-be29a83d5793@analog.com

Changes in v2:
- separate driver implementation from extra features and improve commit messages
- use macros from units.h
- explanation of custom parse function: adf41513_parse_uhz
- reorganize driver data structures
- drop clock framework support for now
- reorganize documentation
- Link to v1: https://lore.kernel.org/r/20251110-adf41513-iio-driver-v1-0-2df8be0fdc6e@analog.com

---
Rodrigo Alencar (8):
      dt-bindings: iio: frequency: add adf41513
      iio: core: add fixed point parsing with 64-bit parts
      iio: test: add kunit test for fixed-point parsing
      iio: frequency: adf41513: driver implementation
      iio: frequency: adf41513: handle LE synchronization feature
      iio: frequency: adf41513: features on frequency change
      docs: iio: add documentation for adf41513 driver
      Documentation: ABI: testing: add common ABI file for iio/frequency

 Documentation/ABI/testing/sysfs-bus-iio-frequency  |   11 +
 .../bindings/iio/frequency/adi,adf41513.yaml       |  215 ++++
 Documentation/iio/adf41513.rst                     |  199 ++++
 Documentation/iio/index.rst                        |    1 +
 MAINTAINERS                                        |   11 +
 drivers/iio/frequency/Kconfig                      |   10 +
 drivers/iio/frequency/Makefile                     |    1 +
 drivers/iio/frequency/adf41513.c                   | 1244 ++++++++++++++++++++
 drivers/iio/industrialio-core.c                    |  151 ++-
 drivers/iio/test/Kconfig                           |   12 +
 drivers/iio/test/Makefile                          |    1 +
 drivers/iio/test/iio-test-fixpoint-parse.c         |  437 +++++++
 include/linux/iio/iio.h                            |    2 +
 13 files changed, 2245 insertions(+), 50 deletions(-)
---
base-commit: c30e80d68a7afb334fde7147ee0106f25dd58d3a
change-id: 20251110-adf41513-iio-driver-aaca8a7f808e

Best regards,
-- 
Rodrigo Alencar <rodrigo.alencar@...log.com>