[PATCH v4 0/7] ADF41513/ADF41510 PLL frequency synthesizers

Rodrigo Alencar via B4 Relay
2026-01-16T14:32:38Z

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@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 (7):
dt-bindings: iio: frequency: add adf41513
units: Add HZ_PER_GHZ definition
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 | 212 ++++
Documentation/iio/adf41513.rst | 199 +++
Documentation/iio/index.rst | 1 +
MAINTAINERS | 10 +
drivers/iio/frequency/Kconfig | 10 +
drivers/iio/frequency/Makefile | 1 +
drivers/iio/frequency/adf41513.c | 1295 ++++++++++++++++++++
include/linux/units.h | 1 +
9 files changed, 1740 insertions(+)
---
base-commit: b82f3047dae4aba38cb26c55c28444db4d77f521
change-id: 20251110-adf41513-iio-driver-aaca8a7f808e

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