Am 2021-12-07 17:31, schrieb Richard Cochran:
On Tue, Dec 07, 2021 at 11:27:19AM +0100, Maximilian Kirchner wrote:
Hello,
I hope someone may be able to help me here. I have trouble syncing two
Linux
systems using PTP.
Setup:
Two PCBs with a BegleCore module and a DP83640 PHY are connected with
each
other over Ethernet. One board should act as the PTP master, the other
as
the slave.
You want to use the PTP features in the phyters.
First step is to make sure the MAC driver isn't also doing time
stamping.
I assume your MAC has the CPTS and will muck things up. I have had to
hack the CPTS support away in some cases.
Thanks,
Richard
Hi,
the SoC used on the BeagleCore modules does indead have a CPTS module.
To see if it helps, I recompiled and replaced the kernel, now with the
option for "TI Common PLatofrm Time Sync (CPTS) Support" turned off.
This now resulted in ptp4l to not running at all. The output is now the
following:
ptp4l[1614.335]: selected /dev/ptp0 as PTP clock
ptp4l[1614.348]: driver rejected most general HWTSTAMP filter
ptp4l[1614.351]: ioctl SIOCSHWTSTAMP failed: Operation not supported
ptp4l[1614.355]: port 1 (eth0): INITIALIZING to FAULTY on FAULT_DETECTED
(FT_UNSPECIFIED)
ptp4l[1614.359]: port 0 (/var/run/ptp4l): INITIALIZING to LISTENING on
INIT_COMPLETE
ptp4l[1614.363]: port 0 (/var/run/ptp4lro): INITIALIZING to LISTENING on
INIT_COMPLETE
It doesn't go further.
The command "./hwstamp_ctl -i eth0" returned:
Device driver does not have support for non-destructive SIOCGHWTSTAMP.
Now I dont know if I made it worse, or if this is the first step to a
solution :-/_______________________________________________
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