PTP time synchronization between SOC

Autonomous Vehicles DRIVE AGX Xavier DRIVE AGX Xavier General
1

Please provide the following info (check/uncheck the boxes after clicking “+ Create Topic”):
Software Version
DRIVE OS Linux 5.2.0
DRIVE OS Linux 5.2.0 and DriveWorks 3.5
NVIDIA DRIVE™ Software 10.0 (Linux)
NVIDIA DRIVE™ Software 9.0 (Linux)
other DRIVE OS version
other

Target Operating System
Linux
QNX
other

Hardware Platform
NVIDIA DRIVE™ AGX Xavier DevKit (E3550)
NVIDIA DRIVE™ AGX Pegasus DevKit (E3550)
other

SDK Manager Version
1.4.1.7402
other

Host Machine Version
native Ubuntu 18.04
other

Hi,
While trying to do time synchronization between SOC’s we are facing issue while executing the following command:

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image1454×164 37.6 KB

3

Hi @rajkumar.palanisamy ,

Below are my commands and the output. Please check if it helps. Thanks.

nvidia@tegra-ubuntu:~/drive-t186ref-linux/samples/nvavb/daemons$ timedatectl set-ntp 0
nvidia@tegra-ubuntu:~/drive-t186ref-linux/samples/nvavb/daemons$ sudo ./phc2sys -s /dev/ptp0 -w -S 1.0 -O 0 & sudo ./ptp4l -f ./gPTP.cfg -p /dev/ptp0 -i eth0.200 -m -D
[4] 1549
ptp4l[928.373]: selected /dev/ptp0 as PTP clock
ptp4l[928.376]: port 1: get_ts_info not supported
ptp4l[928.456]: port 1: INITIALIZING to LISTENING on INITIALIZE
ptp4l[928.456]: port 0: INITIALIZING to LISTENING on INITIALIZE
ptp4l[935.073]: port 1: LISTENING to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES
ptp4l[935.073]: selected best master clock 00044b.fffe.a4e4d1
ptp4l[935.073]: assuming the grand master role
4

@VickNV, I got the following error with the suggested command
nvidia@tegra-ubuntu:~/drive-t186ref-linux/samples/nvavb/daemons$ sudo ./phc2sys -s /dev/ptp0 -w -S 1.0 -O 0 & ./ptp4l -f ./gPTP.cfg -p /dev/ptp0 -i eth0.200 -m -D
[1] 2824
ptp4l[127.295]: selected /dev/ptp0 as PTP clock
ptp4l[127.296]: Failed to open /dev/ptp0: Permission denied
failed to create a clock

Upon giving the “777” permissions to “/dev/ptp0”, I got the following errors:
nvidia@tegra-ubuntu:~/drive-t186ref-linux/samples/nvavb/daemons$ sudo ./phc2sys -s /dev/ptp0 -w -S 1.0 -O 0 & ./ptp4l -f ./gPTP.cfg -p /dev/ptp0 -i eth0.200 -m -D
[2] 2876
ptp4l[202.009]: selected /dev/ptp0 as PTP clock
ptp4l[202.011]: port 1: get_ts_info not supported
ptp4l[202.012]: socket failed: Operation not permitted
ptp4l[202.012]: port 1: INITIALIZING to FAULTY on INITIALIZE
ptp4l[202.012]: uds: bind failed: Permission denied
ptp4l[202.012]: port 0: INITIALIZING to FAULTY on INITIALIZE

5

Please try the same commands as mine. Thanks.

sudo ./phc2sys -s /dev/ptp0 -w -S 1.0 -O 0 & sudo ./ptp4l -f ./gPTP.cfg -p /dev/ptp0 -i eth0.200 -m -D