In this example I've choose pin #7 to be my PPS input. You can use any other GPIO Here.
sudo -s apt-get install device-tree-compiler pps-tools fdtput -c /media/boot/meson8b_odroidc.dtb /pps fdtput -t s /media/boot/meson8b_odroidc.dtb /pps compatible "pps-gpio" fdtput -t s /media/boot/meson8b_odroidc.dtb /pps gpios "GPIOY_3"
Reboot the board to test.
Start feeding the signal to the selected pin (#7 in this example). Remember that the logic voltage is 3.3V.
sudo -s ppstest /dev/pps0
Will output something like:
source 0 - assert 1439248167.494093618, sequence: 552 - clear 0.000000000, sequence: 0 source 0 - assert 1439248167.494140618, sequence: 553 - clear 0.000000000, sequence: 0
Note this example will only run on kernel 3.10.80-122 or greater.