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 v6:
- Drop usage of simple_strtoull().
- Implement better overflow checks with iio_safe_strntou64().
- Link to v5: https://lore.kernel.org/r/20260123-adf41513-iio-driver-v5-0-2dce812a2dda@analog.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 | 1243 ++++++++++++++++++++
drivers/iio/industrialio-core.c | 211 +++-
drivers/iio/test/Kconfig | 12 +
drivers/iio/test/Makefile | 1 +
drivers/iio/test/iio-test-fixpoint-parse.c | 467 ++++++++
include/linux/iio/iio.h | 2 +
13 files changed, 2334 insertions(+), 50 deletions(-)
---
base-commit: 62b44ebc1f2c71db3ca2d4737c52e433f6f03038
change-id: 20251110-adf41513-iio-driver-aaca8a7f808e
Best regards,
--
Rodrigo Alencar <rodrigo.alencar@analog.com>