counter: ftm-quaddec: Documentation: Add specific counter sysfs documentation

This adds documentation for the specific prescaler entry.

Signed-off-by: Patrick Havelange <patrick.havelange@essensium.com>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec b/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec
new file mode 100644 (file)
index 0000000..7d2e7b3
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-bus-counter-ftm-quaddec
@@ -0,0 +1,16 @@
+What:          /sys/bus/counter/devices/counterX/countY/prescaler_available
+KernelVersion: 5.2
+Contact:       linux-iio@vger.kernel.org
+Description:
+               Discrete set of available values for the respective Count Y
+               configuration are listed in this file. Values are delimited by
+               newline characters.
+
+What:          /sys/bus/counter/devices/counterX/countY/prescaler
+KernelVersion: 5.2
+Contact:       linux-iio@vger.kernel.org
+Description:
+               Configure the prescaler value associated with Count Y.
+               On the FlexTimer, the counter clock source passes through a
+               prescaler (i.e. a counter). This acts like a clock
+               divider.