What:		/sys/bus/counter/devices/counterX/signalY/index_polarity
KernelVersion:	5.2
Contact:	linux-iio@vger.kernel.org
Description:
		Active level of index input Signal Y; irrelevant in
		non-synchronous load mode.

What:		/sys/bus/counter/devices/counterX/signalY/index_polarity_available
What:		/sys/bus/counter/devices/counterX/signalY/synchronous_mode_available
KernelVersion:	5.2
Contact:	linux-iio@vger.kernel.org
Description:
		Discrete set of available values for the respective Signal Y
		configuration are listed in this file.

What:		/sys/bus/counter/devices/counterX/signalY/synchronous_mode
KernelVersion:	5.2
Contact:	linux-iio@vger.kernel.org
Description:
		Configure the counter associated with Signal Y for
		non-synchronous or synchronous load mode. Synchronous load mode
		cannot be selected in non-quadrature (Pulse-Direction) clock
		mode.

		non-synchronous:
			A logic low level is the active level at this index
			input. The index function (as enabled via preset_enable)
			is performed directly on the active level of the index
			input.

		synchronous:
			Intended for interfacing with encoder Index output in
			quadrature clock mode. The active level is configured
			via index_polarity. The index function (as enabled via
			preset_enable) is performed synchronously with the
			quadrature clock on the active level of the index input.