On Fri, 2019-01-11 at 18:03 +0100, Timo Korthals wrote: > Dear ptp4l-devs, >
Hi, > we try to sync embedded devices, which are only capable of > PTP_TWO_STEP=FALSE (aka twoStepFlag=0 aka one-way-sync aka > PTP_Sync=1) syncing, with our Ubuntu Linux host (System overview > below). > When we run the self build ptp4l via "./ptp4l -m -l7 -2 -H -i enp0s25 > -E -f /etc/ptp4l.conf" (see config etc. below), the execution hangs > for all ptp4l versions > 1.7 at "INITIALIZING to LISTENING on > INIT_COMPLETE". > If we comment the corresponding line [1] where ptp4l hangs, its start > sending the SYNC_MESSAGE etc. and the log goes on with: > It sounds like your device driver (and possibly kernel changes, I don't remember offhand) needs to support the one step configurations. We can't help you with your device driver, especially if it's not public/open-source. Specifically you're looking for HWTSTAMP_TX_ONESTEP_SYNC. Your kernel must be new enough to support the field. Additionally, you will need to have your driver updated to correctly enable the request for HWTSTAMP_TX_ONESTEP_SYNC. Note that as far as I'm aware this only works for sync packets, and no kernel support for one-step of other messages has been written. This is primarly because no hardware has been widely available to test such a feature. (i.e. one-step syncing of peer delay messages) Hope this helps. Regards, Jake _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
