Based on your previous focus on Linux dual-sensor PTP synchronization and hardware adaptation, the specific configuration steps for hardware timestamps are as follows:
Confirm Hardware Support: Use `ethtool -T eth0` to check the network card's capabilities. Confirm that the output includes hardware timestamp identifiers such as `SOF_TIMESTAMPING_TX_HARDWARE`, excluding network cards that only support software timestamps.
Load Adaptor Driver: Install the official driver for the corresponding network card (e.g., the IGB driver for Intel I210) to avoid generic drivers blocking the hardware timestamp function.
Configure PTP4L Parameters: Add `time_stamping hardware` to `/etc/linuxptp/ptp4l.conf` to force the hardware timestamp mode.
Verify Effectiveness: After restarting the PTP4L service, check the logs to confirm that the hardware timestamp is enabled and the synchronization offset is stable at the microsecond level. This indicates that the configuration is complete.
These steps allow the network card's hardware timestamp to work correctly, supporting high-precision PTP synchronization for dual sensors.
