Tool/software:
Hi TI team,
We are able to sync with grand master over PTP V2 protocol using AM5748 Linux,
root@AM5748:~# ptp4l -E -2 -H -i eth1 -s -m -q -p /dev/ptp0
ptp4l[3355.674]: selected /dev/ptp0 as PTP clock
ptp4l[3355.772]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[3355.772]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[3356.456]: port 1: new foreign master 001747.fffe.702f46-1
ptp4l[3358.458]: selected best master clock 001747.fffe.702f46
ptp4l[3358.458]: updating UTC offset to 37
ptp4l[3358.458]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[3360.635]: master offset -1337 s0 freq -10150 path delay 8388
ptp4l[3361.637]: master offset -1660 s2 freq -10473 path delay 8388
ptp4l[3361.637]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[3362.638]: master offset -1555 s2 freq -12028 path delay 8365
ptp4l[3363.638]: master offset 536 s2 freq -10403 path delay 8158
ptp4l[3364.639]: master offset 372 s2 freq -10406 path delay 8279
ptp4l[3365.640]: master offset 487 s2 freq -10180 path delay 8280
We have followed https://software-dl.ti.com/processor-sdk-linux/esd/AM57X/08_02_01_00/exports/docs/linux/Industrial_Protocols_PTP.html to enable IEEE-1588,
now we want to enable, 1-PPS signal output so we can measure the accuracy for PTP sync mechanism, for this some hardware change is mention in section 4.3.3.3. Hardware Modifications,
This modification involves multiple buffers and decaodec, can't be 1-PPS directly probed from the SOC gpio?
These HW changes seem a little complex as the schematic is not provided only HW changes in text description are given./cfs-file/__key/communityserver-discussions-components-files/791/Am572x_5F00_am574x_5F00_idk_5F00_pps_5F00_ModList.pdf
Regards,
Snehal
