[PATCH v8 00/10] 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@analog.com>
---
Changes in v8:
- Add new function kstrntoull() to lib/kstrtox.c and tests to lib/test-kstrtox.c.
- Drop custom iio u64 parser, replacing it for kstrntoull().
- Dedicated MAINTAINERS entry for drivers/iio/test/iio-test-fixpoint-parse.c.
- Link to v7: https://lore.kernel.org/r/20260216-adf41513-iio-driver-v7-0-b0ed387ab559@analog.com (local)

Changes in v7:
- Addressed minor suggestions.
- frequency_resolution ABI for AD4350 removed in favor of generic one.
- Link to v6: https://lore.kernel.org/r/20260130-adf41513-iio-driver-v6-0-cf46239026bc@analog.com (local)

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 (local)

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 (local)

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 (local)

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 (local)

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 (local)

---
Rodrigo Alencar (10):
      dt-bindings: iio: frequency: add adf41513
      lib: kstrtox: add kstrntoull() helper
      lib: test-kstrtox: add tests for kstrntoull()
      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 +
 .../ABI/testing/sysfs-bus-iio-frequency-adf4350    |   10 -
 .../bindings/iio/frequency/adi,adf41513.yaml       |  215 ++++
 Documentation/iio/adf41513.rst                     |  199 ++++
 Documentation/iio/index.rst                        |    1 +
 MAINTAINERS                                        |   15 +
 drivers/iio/frequency/Kconfig                      |   10 +
 drivers/iio/frequency/Makefile                     |    1 +
 drivers/iio/frequency/adf41513.c                   | 1240 ++++++++++++++++++++
 drivers/iio/industrialio-core.c                    |  167 ++-
 drivers/iio/test/Kconfig                           |   12 +
 drivers/iio/test/Makefile                          |    1 +
 drivers/iio/test/iio-test-fixpoint-parse.c         |  470 ++++++++
 include/linux/iio/iio.h                            |    2 +
 include/linux/kstrtox.h                            |    3 +
 lib/kstrtox.c                                      |   47 +-
 lib/test-kstrtox.c                                 |  121 ++
 17 files changed, 2461 insertions(+), 64 deletions(-)
---
base-commit: cce8de7f9744a210a4441ca8a667a9950515eea7
change-id: 20251110-adf41513-iio-driver-aaca8a7f808e

Best regards,
-- 
Rodrigo Alencar [off-list ref]