GMSL camera PTP synchronization

Autonomous Machines Jetson & Embedded Systems Jetson AGX Orin
1

Hi，

We install 4 identical GMSL cameras on Orin. I want the GMSL cameras to perform PTP synchronization with the lidar. Is this feasible? I see in this document:

NVIDIA is looking at moving current timestamping done in frame capture ISR to PTP (get_ptp_hwtime())
https://docs.nvidia.com/drive/active/5.0.10.3L/nvvib_docs/index.html#page/NVIDIA%2520DRIVE%2520Linux%2520SDK%2520Development%2520Guide%2FAppendix%2FTimeSynchronization_DPX2.html%23wwpID0ENHA

I am using NVIDIA® Jetson™ Linux version 35.1. Does this feature exist now?

thank you

3

Hi,
This is not supported on L4T releases. For reference, could you share the reason to have PTP synchronization for each camera?

4

Ok, thanks.

In the project research stage, we wanted to realize synchronous trigger between Lidar and camera, Lidar and Oirn used PTP time synchronization mode.

I saw the description in the DRIVE PX 2 document and heard FAE say that the camera timestamp can synchronize the PTP time, but I couldn’t find Orin’s description of this part.

So there’s no connection between the camera timestamp and the PTP?

6

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