sudo /opt/nvidia/jetson-io/config-by-hardware.py -l
Configurations for the following hardware modules are available:
1. Adafruit SPH0645LM4H
2. FE-PI Audio Z V2
3. Jetson PPS
**
**
sudo /opt/nvidia/jetson-io/config-by-hardware.py -n "Jetson PPS"
Configuration saved to /boot/tegra194-p3668-all-p3509-0000-jetson-pps.dtb.
then Reboot.
Then
ls /dev/pp
ppp pps0
$ sudo ppstest /dev/pps0
trying PPS source "/dev/pps0"
found PPS source "/dev/pps0"
ok, found 1 source(s), now start fetching data...
time_pps_fetch() error -1 (Connection timed out)
time_pps_fetch() error -1 (Connection timed out).
It seems that the device needs to get attached the time-pulse wire to the pin 7
I anticipate it will not boot if I return the extlinux.conf FDT line