Documentation/ABI/testing/sysfs-bus-iio-frequency-adf4350

   1 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_frequency_resolution
   2 KernelVersion:  3.4.0
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Stores channel Y frequency resolution/channel spacing in Hz.
   6                 The value given directly influences the MODULUS used by
   7                 the fractional-N PLL. It is assumed that the algorithm
   8                 that is used to compute the various dividers, is able to
   9                 generate proper values for multiples of channel spacing.
  10
  11 What:           /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_refin_frequency
  12 KernelVersion:  3.4.0
  13 Contact:        linux-iio@vger.kernel.org
  14 Description:
  15                 Sets channel Y REFin frequency in Hz. In some clock chained
  16                 applications, the reference frequency used by the PLL may
  17                 change during runtime. This attribute allows the user to
  18                 adjust the reference frequency accordingly.
  19                 The value written has no effect until out_altvoltageY_frequency
  20                 is updated. Consider to use out_altvoltageY_powerdown to power
  21                 down the PLL and its RFOut buffers during REFin changes.