Re: [Linuxptp-users] can't get linux PTP to run

[<Tim...@de...>]

Hi,


I tested the ptp test porgramm.

capabilities:
  599999999 maximum frequency adjustment (ppb)
  0 programmable alarms
  0 external time stamp channels
  0 programmable periodic signals
  0 pulse per second

What i can do:
I can adjust the frequency,
get ptp clock time
set/get the ptp clock from and  to system time.
time shift okay

What i can not do:
timer_create: Operation not supported
PTP_ENABLE_PPS: Operation not supported

I also tested /Documentation/networking/timestamping this seems fine:

SO_TIMESTAMP 0
SO_TIMESTAMPNS 0
SO_TIMESTAMPING 0
873.135483: sent 124 bytes
873.135517: select 1864483us
875.000334: select returned: 0, success
875.000423: sent 124 bytes
875.000441: select 4999559us
880.004323: select returned: 0, success
880.004497: sent 124 bytes
880.004521: select 4995479us

I also set both clocks to nealy the same nothing changed.

Thanks,
Benny



>>Hi,
>>
>>
>>I'm not an expert, but the log seems to indicate a systematically decreasing master time offset, with a maxed out freq. adjustment. I would say the >>PHC is somehow unable to properly step to a new value (clock_settime/adjtime fails).
>>
>>You could try setting both clocks nearly equal and see if they eventually converge.
>>
>>You could also compile and try the testptp program (/Documentation/ptp/testptp.c) to see if your PHC clock actually works.
>>
>>I'm not sure if support of the get_ts_info() call is required.
>>
>>
>>J.