hi

Omar Pighi

Sr. Engineer, VisLab


     Email  opi...@ambarella.com  -  Phone: +39 0521 90 6181 (GMT+1)
     VisLab, an Ambarella company - Parco Area delle Scienze,
     Tecnopolo, Pad. 33, Univ di Parma, 43124 PARMA, Italy

     Administration: off...@vislab.it  phone: +39 0521 905725

Il 18/12/2017 16:15, Richard Cochran ha scritto:
On Mon, Dec 18, 2017 at 11:28:44AM +0100, Omar Pighi via Linuxptp-users wrote:
the phc log from ARM (MAster) system):

Dec 18 10:14:35 H2 user.info phc2sys: [244285.927] sys offset -19228841334 s2 
freq -199999999 delay    900
Dec 18 10:14:36 H2 user.info phc2sys: [244286.938] sys offset -19026801184 s2 
freq -199999999 delay    900
Here is your problem.  Don't you see the huge frequency offset?

but it is on the master side so it can affect the slave phc behaviour as
well?? can we configure it (-L option doesn't do that?)


This only shows 's2' BTW.  Consider s0 and s1 at the start.

The arm is an ambarella h2.
Where did you the PHC driver for the ambarella?  AFAICT that chip has
no mainline support.

i will ask to our "driver team"about this issue , any suggestion on what
to check?


Thanks,
Richard

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