Thank you Ian! I appreciate the insight. I struggle around parts of this PTP; generally on which hardware can run it or not (w/ hardware timestamps, the RPI 3/3b+/4 has a ethernet jack that is really a usb iirc, and doesn’t allow for HW timestamping. Which threw me for a loop!) I loosely understand the kernel options/requirements. I struggle on the hardware end of it. I unfortunately do not have the ability to pickup an x15 and test it out currently (but would like to, or love if someone could confirm kernel options and show a ethtool -T output of the ethernet devices). I’d be interesting to see if it is possible to replace the jack with a more capable one, but that might be out of scope for what I am doing. I do own some BeagleBone Blacks and a Green, which are ptp capable and I’ve debated on using them for the projects in Bobsville and Fixham harbour; I was hoping for a solution that was a bit more powerful than the Beaglebone black, I noticed that the beaglebone AI uses a different and more powerful processor (similar processor to the x15 iirc?) but I could not find ptp support when skimming over the product details.
Maybe this is best for another thread, but is there a beaglebone black alternative/derivative with a gigabit jack? EDIT: Looking into the beaglebone enhanced by sanCloud.