linux/drivers/staging/iio/Documentation/sysfs-bus-iio-impedance-analyzer-ad5933
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   1What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_start
   2KernelVersion:  3.1.0
   3Contact:        linux-iio@vger.kernel.org
   4Description:
   5                Frequency sweep start frequency in Hz.
   6
   7What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_increment
   8KernelVersion:  3.1.0
   9Contact:        linux-iio@vger.kernel.org
  10Description:
  11                Frequency increment in Hz (step size) between consecutive
  12                frequency points along the sweep.
  13
  14What:           /sys/bus/iio/devices/iio:deviceX/outY_freq_points
  15KernelVersion:  3.1.0
  16Contact:        linux-iio@vger.kernel.org
  17Description:
  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
  23What:           /sys/bus/iio/devices/iio:deviceX/outY_settling_cycles
  24KernelVersion:  3.1.0
  25Contact:        linux-iio@vger.kernel.org
  26Description:
  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.
  31