kernel/drivers/staging/iio/Documentation/sysfs-bus-iio-impedance-analyzer-ad5933

   1 What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_start
   2 KernelVersion:  3.1.0
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Frequency sweep start frequency in Hz.
   6
   7 What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_increment
   8 KernelVersion:  3.1.0
   9 Contact:        linux-iio@vger.kernel.org
  10 Description:
  11                 Frequency increment in Hz (step size) between consecutive
  12                 frequency points along the sweep.
  13
  14 What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_points
  15 KernelVersion:  3.1.0
  16 Contact:        linux-iio@vger.kernel.org
  17 Description:
  18                 Number of frequency points (steps) in the frequency sweep.
  19                 This value, in conjunction with the outY_freq_start and the
  20                 outY_freq_increment, determines the frequency sweep range
  21                 for the sweep operation.
  22
  23 What:           /sys/bus/iio/devices/iio:deviceX/outY_settling_cycles
  24 KernelVersion:  3.1.0
  25 Contact:        linux-iio@vger.kernel.org
  26 Description:
  27                 Number of output excitation cycles (settling time cycles)
  28                 that are allowed to pass through the unknown impedance,
  29                 after each frequency increment, and before the ADC is triggered
  30                 to perform a conversion sequence of the response signal.