Documentation/ABI/testing/sysfs-bus-counter-104-quad-8

   1 What:           /sys/bus/counter/devices/counterX/signalY/cable_fault
   2 KernelVersion:  5.7
   3 Contact:        linux-iio@vger.kernel.org
   4 Description:
   5                 Read-only attribute that indicates whether a differential
   6                 encoder cable fault (not connected or loose wires) is detected
   7                 for the respective channel of Signal Y. Valid attribute values
   8                 are boolean. Detection must first be enabled via the
   9                 corresponding cable_fault_enable attribute.
  10
  11 What:           /sys/bus/counter/devices/counterX/signalY/cable_fault_enable
  12 KernelVersion:  5.7
  13 Contact:        linux-iio@vger.kernel.org
  14 Description:
  15                 Whether detection of differential encoder cable faults for the
  16                 respective channel of Signal Y is enabled. Valid attribute
  17                 values are boolean.
  18
  19 What:           /sys/bus/counter/devices/counterX/signalY/filter_clock_prescaler
  20 KernelVersion:  5.7
  21 Contact:        linux-iio@vger.kernel.org
  22 Description:
  23                 Filter clock factor for input Signal Y. This prescaler value
  24                 affects the inputs of both quadrature pair signals.
  25
  26 What:           /sys/bus/counter/devices/counterX/signalY/index_polarity
  27 KernelVersion:  5.2
  28 Contact:        linux-iio@vger.kernel.org
  29 Description:
  30                 Active level of index input Signal Y; irrelevant in
  31                 non-synchronous load mode.
  32
  33 What:           /sys/bus/counter/devices/counterX/signalY/index_polarity_available
  34 What:           /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
  35 KernelVersion:  5.2
  36 Contact:        linux-iio@vger.kernel.org
  37 Description:
  38                 Discrete set of available values for the respective Signal Y
  39                 configuration are listed in this file.
  40
  41 What:           /sys/bus/counter/devices/counterX/signalY/synchronous_mode
  42 KernelVersion:  5.2
  43 Contact:        linux-iio@vger.kernel.org
  44 Description:
  45                 Configure the counter associated with Signal Y for
  46                 non-synchronous or synchronous load mode. Synchronous load mode
  47                 cannot be selected in non-quadrature (Pulse-Direction) clock
  48                 mode.
  49
  50                 non-synchronous:
  51                         A logic low level is the active level at this index
  52                         input. The index function (as enabled via preset_enable)
  53                         is performed directly on the active level of the index
  54                         input.
  55
  56                 synchronous:
  57                         Intended for interfacing with encoder Index output in
  58                         quadrature clock mode. The active level is configured
  59                         via index_polarity. The index function (as enabled via
  60                         preset_enable) is performed synchronously with the
  61                         quadrature clock on the active level of the index input.