Re: [Linuxptp-users] The ptp4l is not sync sometimes.

[Richard C. <ric...@gm...>]

On Thu, Mar 08, 2012 at 04:22:37PM +0900, Takahiro Shimizu wrote:
> 
> I chedked t1, .. t4 value.
> t2 or t4 is 0 at the time.

Both t2 and t4 are the receive time stamps (slave and master).  I bet
your driver (or hardware) is dropping Rx time stamps.

Still, the ptp4l program should handle missing time stamps.  I will
send you a patch.

Thanks,

Richard