1What: /sys/bus/counter/devices/counterX/signalY/index_polarity 2KernelVersion: 5.2 3Contact: linux-iio@vger.kernel.org 4Description: 5 Active level of index input Signal Y; irrelevant in 6 non-synchronous load mode. 7 8What: /sys/bus/counter/devices/counterX/signalY/index_polarity_available 9What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode_available 10KernelVersion: 5.2 11Contact: linux-iio@vger.kernel.org 12Description: 13 Discrete set of available values for the respective Signal Y 14 configuration are listed in this file. 15 16What: /sys/bus/counter/devices/counterX/signalY/synchronous_mode 17KernelVersion: 5.2 18Contact: linux-iio@vger.kernel.org 19Description: 20 Configure the counter associated with Signal Y for 21 non-synchronous or synchronous load mode. Synchronous load mode 22 cannot be selected in non-quadrature (Pulse-Direction) clock 23 mode. 24 25 non-synchronous: 26 A logic low level is the active level at this index 27 input. The index function (as enabled via preset_enable) 28 is performed directly on the active level of the index 29 input. 30 31 synchronous: 32 Intended for interfacing with encoder Index output in 33 quadrature clock mode. The active level is configured 34 via index_polarity. The index function (as enabled via 35 preset_enable) is performed synchronously with the 36 quadrature clock on the active level of the index input. 37