[Linuxptp-users] Problems with hardware time stamping with PHY DP83640 on MCP5200 powerpc platform

[Mario M. <Mar...@we...>]

Hallo linuxptp members,

I have some problems to use our PTP device (PHY DP83640 on MCP5200 powerpc 
platform).

The software time stamping seems for the first look ok but the hardware time 
stamping have some problems.

1.)  software time stamping:
====================
ptp4l[180]: port 1: INITIALIZING to LISTENING on INITIALIZE
ptp4l[180]: port 1: new foreign master 0050c2.fffe.c2dfc3-1
ptp4l[180]: selected best master clock 0050c2.fffe.c2dfc3
ptp4l[180]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[180]: port 1: minimum delay request interval 2^3
ptp4l[180]: master offset     536296 s0 adj      +0 path delay     116376
ptp4l[180]: master offset     546610 s0 adj      +0 path delay     116376
ptp4l[180]: master offset     552398 s0 adj      +0 path delay     116376
ptp4l[180]: master offset     597686 s1 adj      +0 path delay     116376
ptp4l[180]: master offset      30287 s2 adj   +3059 path delay     116376
ptp4l[180]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED
ptp4l[180]: master offset      41825 s2 adj   +4255 path delay     116376
ptp4l[180]: master offset     104402 s2 adj  +10617 path delay     116376
ptp4l[180]: master offset     108479 s2 adj  +11133 path delay     116376
ptp4l[180]: master offset     190504 s2 adj  +19526 path delay      95604
ptp4l[180]: master offset     180213 s2 adj  +18677 path delay      95604
ptp4l[180]: master offset     212836 s2 adj  +22152 path delay      87573
ptp4l[180]: master offset     202140 s2 adj  +21285 path delay      87573
ptp4l[180]: master offset     245722 s2 adj  +25889 path delay      87573
ptp4l[180]: master offset     212369 s2 adj  +22766 path delay      95802
ptp4l[180]: master offset     241451 s2 adj  +25915 path delay      95802
ptp4l[180]: master offset     302218 s2 adj  +32294 path delay      95802
ptp4l[180]: master offset     164231 s2 adj  +18660 path delay      95802
ptp4l[180]: master offset     150769 s2 adj  +17464 path delay      95724

It adjust  only the system clock not PHY clock.

2.) hardware time stamping
===================
ptp4l[183]: selected /dev/ptp0 as PTP clock

ptp4l[183]: port 1: INITIALIZING to LISTENING on INITIALIZE
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: port 1: new foreign master 0050c2.fffe.c2dfc3-1
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: selected best master clock 0050c2.fffe.c2dfc3
ptp4l[183]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[183]: recvmsg tx timestamp failed: Resource temporarily unavailable
ptp4l[183]: port 1: send delay request failed
ptp4l[183]: port 1: UNCALIBRATED to FAULTY on FAULT_DETECTED
ptp4l[183]: port 1: FAULTY to LISTENING on FAULT_CLEARED
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: port 1: new foreign master 0050c2.fffe.c2dfc3-1
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: selected best master clock 0050c2.fffe.c2dfc3
ptp4l[183]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[183]: recvmsg tx timestamp failed: Resource temporarily unavailable
ptp4l[183]: port 1: send delay request failed
ptp4l[183]: port 1: UNCALIBRATED to FAULTY on FAULT_DETECTED
ptp4l[183]: port 1: FAULTY to LISTENING on FAULT_CLEARED
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: port 1: new foreign master 0050c2.fffe.c2dfc3-1
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: selected best master clock 0050c2.fffe.c2dfc3
ptp4l[183]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[183]: recvmsg tx timestamp failed: Resource temporarily unavailable
ptp4l[183]: port 1: send delay request failed
ptp4l[183]: port 1: UNCALIBRATED to FAULTY on FAULT_DETECTED
ptp4l[183]: port 1: FAULTY to LISTENING on FAULT_CLEARED
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: port 1: new foreign master 0050c2.fffe.c2dfc3-1
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: received SYNC without timestamp
ptp4l[183]: port 1: bad message
ptp4l[183]: selected best master clock 0050c2.fffe.c2dfc3
ptp4l[183]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE
ptp4l[183]: recvmsg tx timestamp failed: Resource temporarily unavailable
ptp4l[183]: port 1: send delay request failed
ptp4l[183]: port 1: UNCALIBRATED to FAULTY on FAULT_DETECTED

I used following linux version without any source changes for test of PTP:

Linux version 3.4.0-rc7-next-20120514
with following options
- CONFIG_EXPERIMENTAL
- CONFIG_PPS
- CONFIG_NETWORK_PHY_TIMESTAMPING
- PTP_1588_CLOCKPTP

I have at the moment no any idea what is wrong and I need help to figure out 
where the problem is.

The other point is, I am not sure that the ptp4l support the  DP83640 PHY.

Please let me know how I can debug this problem e.g. with some printks in 
the kernel driver or adapt the ptp4l application.

Best regards and many thanks for the help in advance,

Mario Molitor