I've got a petalinux platform acting as slave that fails to synch to a master. Another similar petalinux platform on the network (different hardware, same version of petalinux, same apparent ptp settings), synchs just fine. I have a feeling that I need to do something in the platform-specific linux portions (i.e device tree?), but I wonder if anyone might be able to see any patterns in the below failures. Does it look like the timestamping code has something wrong with the value it's using for a frequency?
This should be running with a 250MHz clock fed to a Cadence macb driver through an entry in the device tree. The macb driver is doing the timestamping, supposedly. PHY timestamping is turned off in the kernel, in the below examples, I believe phc2sys was not running, or if it was, it was most certainly waiting for calibration. Mostly, on the failing slave, I get: # ptp4l -i eth0 -m -s -f ptp4l.conf ptp4l[1848.892]: selected /dev/ptp0 as PTP clock ptp4l[1848.893]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[1848.893]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[1848.893]: port 1: link up ptp4l[1849.809]: port 1: new foreign master 0200c0.fffe.a80328-1 ptp4l[1853.908]: selected best master clock 0200c0.fffe.a80328 ptp4l[1853.908]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[1863.879]: rms 7630435116841505792 max 7630435120363045888 freq +64000000 +/- 0 delay 107581456 +/- 31296274 ptp4l[1872.076]: rms 7630435108731066368 max 7630435112264740864 freq +64000000 +/- 0 delay 205130930 +/- 31485515 ptp4l[1880.273]: rms 7630435100770999296 max 7630435104247852032 freq +64000000 +/- 0 delay 165287547 +/- 22174280 ptp4l[1888.470]: rms 7630435092716822528 max 7630435096218990592 freq +64000000 +/- 0 delay 212781807 +/- 36917730 ptp4l[1896.667]: rms 7630435084654562304 max 7630435088127610880 freq +64000000 +/- 0 delay 280105538 +/- 28070547 ptp4l[1904.864]: rms 7630435076681515008 max 7630435080188012544 freq +64000000 +/- 0 delay 262132308 +/- 8259122 ptp4l[1913.061]: rms 7630435068652837888 max 7630435072070512640 freq +64000000 +/- 0 delay 283602718 +/- 54465238 This was from earlier in the day (it's possible that I manually set time in between the two events): # ptp4l -i eth0 -m -s -f ptp4l.conf ptp4l[404.634]: selected /dev/ptp0 as PTP clock ptp4l[404.635]: port 1: INITIALIZING to LISTENING on INITIALIZE ptp4l[404.635]: port 0: INITIALIZING to LISTENING on INITIALIZE ptp4l[404.636]: port 1: link up ptp4l[405.111]: port 1: new foreign master 0200c0.fffe.a80328-1 ptp4l[409.209]: selected best master clock 0200c0.fffe.a80328 ptp4l[409.210]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[413.006]: clockcheck: clock jumped forward or running faster than expected! ptp4l[413.734]: clockcheck: clock jumped forward or running faster than expected! ptp4l[414.030]: clockcheck: clock jumped forward or running faster than expected! ptp4l[414.607]: clockcheck: clock jumped forward or running faster than expected! ptp4l[415.055]: clockcheck: clock jumped forward or running faster than expected! ptp4l[415.191]: clockcheck: clock jumped forward or running faster than expected! ptp4l[416.080]: clockcheck: clock jumped forward or running faster than expected! ptp4l[416.184]: clockcheck: clock jumped forward or running faster than expected! ptp4l[417.104]: clockcheck: clock jumped forward or running faster than expected! ptp4l[417.856]: clockcheck: clock jumped forward or running faster than expected! ptp4l[418.129]: clockcheck: clock jumped forward or running faster than expected! ptp4l[418.129]: rms 1637167828864901376 max 3279450674306890752 freq +64000000 +/- 0 delay -4098622952691958 +/- 342569061489599 ptp4l[419.153]: clockcheck: clock jumped forward or running faster than expected! ptp4l[419.655]: clockcheck: clock jumped forward or running faster than expected! ptp4l[419.810]: clockcheck: clock jumped forward or running faster than expected! ptp4l[420.178]: clockcheck: clock jumped forward or running faster than expected! ptp4l[420.801]: clockcheck: clock jumped forward or running faster than expected! ptp4l[421.203]: clockcheck: clock jumped forward or running faster than expected! ptp4l[422.227]: clockcheck: clock jumped forward or running faster than expected! ptp4l[422.505]: clockcheck: clock jumped forward or running faster than expected! ptp4l[423.252]: clockcheck: clock jumped forward or running faster than expected! ptp4l[423.526]: clockcheck: clock jumped forward or running faster than expected! ptp4l[424.277]: clockcheck: clock jumped forward or running faster than expected! ptp4l[424.686]: clockcheck: clock jumped forward or running faster than expected! ptp4l[425.301]: clockcheck: clock jumped forward or running faster than expected! ptp4l[426.326]: clockcheck: clock jumped forward or running faster than expected! ptp4l[426.326]: rms 135597402853273248 max 177243599217711776 freq +64000000 +/- 0 delay -2016234365286032 +/- 501084510336480 Any help would be greatly appreciated. Aaron
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