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Documentation: ABI: testing: add common ABI file for iio/frequency

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Add ABI documentation file for PLL/DDS devices with frequency_resolution
sysfs entry attribute used by both ADF4350 and ADF41513.

Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Rodrigo Alencar <rodrigo.alencar@analog.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Rodrigo Alencar 2026-06-04 10:59:08 +01:00 committed by Jonathan Cameron
parent 3eaacb0f1f
commit e05c8a6b0b
2 changed files with 11 additions and 10 deletions
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11
Documentation/ABI/testing/sysfs-bus-iio-frequency Normal file
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What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_resolution
KernelVersion: 3.4.0
Contact: linux-iio@vger.kernel.org
Description:
Stores channel Y frequency resolution/channel spacing in Hz for PLL
devices. The given value directly influences the operating mode when
fractional-N synthesis is required, as it derives values for
configurable modulus parameters used in the calculation of the output
frequency. It is assumed that the algorithm used to compute the various
dividers is able to generate proper values for multiples of the channel
spacing.

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Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350
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What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_resolution
KernelVersion: 3.4.0
Contact: linux-iio@vger.kernel.org
Description:
Stores channel Y frequency resolution/channel spacing in Hz.
The value given directly influences the MODULUS used by
the fractional-N PLL. It is assumed that the algorithm
that is used to compute the various dividers, is able to
generate proper values for multiples of channel spacing.
What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_refin_frequency
KernelVersion: 3.4.0
Contact: linux-iio@vger.kernel.org