What:		/sys/bus/counter/devices/counterX/countY/spike_filter_ns
KernelVersion:	5.14
Contact:	linux-iio@vger.kernel.org
Description:
		If the counter device supports programmable spike filter this
		attribute indicates the value in nanoseconds where noise pulses
		shorter or equal to configured value are ignored. Value 0 means
		filter is disabled.