Hello all, i am trying to sync an embedded platform with my server as using my server as master and the embedded platform as slave using G.8275.x On the master side my ethernet card has the ethtool output; Time stamping parameters for enp134s0f0: Capabilities: hardware-transmit (SOF_TIMESTAMPING_TX_HARDWARE) software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE) hardware-receive (SOF_TIMESTAMPING_RX_HARDWARE) software-receive (SOF_TIMESTAMPING_RX_SOFTWARE) software-system-clock (SOF_TIMESTAMPING_SOFTWARE) hardware-raw-clock (SOF_TIMESTAMPING_RAW_HARDWARE) PTP Hardware Clock: 7 Hardware Transmit Timestamp Modes: off (HWTSTAMP_TX_OFF) on (HWTSTAMP_TX_ON) Hardware Receive Filter Modes: none (HWTSTAMP_FILTER_NONE) all (HWTSTAMP_FILTER_ALL) ethtool -i enp134s0f0 driver: ice version: 1.8.8 firmware-version: 2.10 0x8000433d 1.2789.0 expansion-rom-version: bus-info: 0000:86:00.0 supports-statistics: yes supports-test: yes supports-eeprom-access: yes supports-register-dump: yes supports-priv-flags: yes I am setting ptp device clock from system clock, everything is fine ptp4l -i enp134s0f0 -l 7 -f default.cfg & phc2sys -c enp134s0f0 -n 44 -s CLOCK_REALTIME -O 0 & phc_ctl /dev/ptp7 get or phc_ctl enp134s0f0 get phc_ctl[11027.049]: clock time is 1654258591.165904796 or Fri Jun 3 15:16:31 2022 (synced with real time) phc2sys: [11286.528] enp134s0f0 sys offset -14 s2 freq +81619 delay 682 phc2sys: [11287.530] enp134s0f0 sys offset 21 s2 freq +81650 delay 682 phc2sys: [11288.531] enp134s0f0 sys offset -2 s2 freq +81633 delay 589 phc2sys: [11289.533] enp134s0f0 sys offset 5 s2 freq +81640 delay 681 phc2sys: [11290.533] enp134s0f0 sys offset 7 s2 freq +81643 delay 678 phc2sys: [11291.534] enp134s0f0 sys offset -8 s2 freq +81630 delay 683 phc2sys: [11292.535] enp134s0f0 sys offset -45 s2 freq +81591 delay 578 phc2sys: [11293.537] enp134s0f0 sys offset 18 s2 freq +81641 delay 686 phc2sys: [11294.540] enp134s0f0 sys offset 3 s2 freq +81631 delay 682 phc2sys: [11295.540] enp134s0f0 sys offset 25 s2 freq +81654 delay 681 phc2sys: [11296.542] enp134s0f0 sys offset -13 s2 freq +81623 delay 682 phc2sys: [11297.544] enp134s0f0 sys offset -20 s2 freq +81612 delay 681 phc2sys: [11298.545] enp134s0f0 sys offset 3 s2 freq +81629 delay 587 My default config file is global] # # Default Data Set # twoStepFlag 1 clientOnly 0 socket_priority 0 priority1 127 priority2 128 domainNumber 44 #utc_offset 37 clockClass 248 clockAccuracy 0xFE offsetScaledLogVariance 0xFFFF free_running 0 freq_est_interval 1 dscp_event 0 dscp_general 0 dataset_comparison G.8275.x G.8275.defaultDS.localPriority 128 maxStepsRemoved 255 # # Port Data Set # logAnnounceInterval 1 logSyncInterval 0 operLogSyncInterval 0 logMinDelayReqInterval 0 logMinPdelayReqInterval 0 operLogPdelayReqInterval 0 announceReceiptTimeout 3 syncReceiptTimeout 0 delay_response_timeout 0 delayAsymmetry 0 fault_reset_interval 4 neighborPropDelayThresh 20000000 serverOnly 1 G.8275.portDS.localPriority 128 asCapable auto BMCA ptp inhibit_announce 0 inhibit_delay_req 0 ignore_source_id 0 # # Run time options # assume_two_step 0 logging_level 6 path_trace_enabled 0 follow_up_info 0 hybrid_e2e 1 inhibit_multicast_service 1 net_sync_monitor 0 tc_spanning_tree 0 tx_timestamp_timeout 10 unicast_listen 1 unicast_master_table 0 unicast_req_duration 3600 use_syslog 1 verbose 0 summary_interval 0 kernel_leap 1 check_fup_sync 0 clock_class_threshold 248 # # Servo Options # pi_proportional_const 0.0 pi_integral_const 0.0 pi_proportional_scale 0.0 pi_proportional_exponent -0.3 pi_proportional_norm_max 0.7 pi_integral_scale 0.0 pi_integral_exponent 0.4 pi_integral_norm_max 0.3 step_threshold 0.0 first_step_threshold 0.00002 max_frequency 900000000 clock_servo pi sanity_freq_limit 200000000 ntpshm_segment 0 msg_interval_request 0 servo_num_offset_values 10 servo_offset_threshold 0 write_phase_mode 0 # # Transport options # transportSpecific 0x0 ptp_dst_mac 01:1B:19:00:00:00 p2p_dst_mac 01:80:C2:00:00:0E udp_ttl 1 udp6_scope 0x0E uds_address /var/run/ptp4l uds_file_mode 0660 uds_ro_address /var/run/ptp4lro uds_ro_file_mode 0666 # # Default interface options # clock_type OC network_transport UDPv4 delay_mechanism E2E time_stamping hardware tsproc_mode filter delay_filter moving_median delay_filter_length 10 egressLatency 0 ingressLatency 0 boundary_clock_jbod 0 phc_index -1 # # Clock description # productDescription ;; revisionData ;; manufacturerIdentity 00:00:00 userDescription ; timeSource 0xA0 --------------- On the slave side, when i do /usr/linuxptp/ptp4l -i qse-eth -smf /usr/linuxptp/configs/user_gen.cfg -l 9 /phc_ctl qse-eth get I see that clock ise synced with my rmaster b49691.fffe.b7a21c As you see in log, it selects b49691.fffe.b7a21c But after that it selects and tries local clock that is the clock of eth interface ptp4l[2698.347]: selected local clock aabbcc.fffe.ddee27 there is negative delay with own local clock and remote master is not synced the pmc output shows the status. It never syncs with my master and tries local with huge offset. But phc clock is continously synced with my master clock. ptp4l[2698.347]: selected local clock aabbcc.fffe.ddee27 as best master ptp4l[2699.143]: port 1: unicast request timeout ptp4l[2699.144]: port 1: time to renew unicast subscriptions ptp4l[2699.144]: port 1: unicast ANNOUNCE granted for 60 sec ptp4l[2699.177]: port 1: renewal timeout at 2744 ptp4l[2699.178]: port 1: unicast SYNC granted for 60 sec ptp4l[2699.178]: port 1: unicast DELAY_RESP granted for 60 sec ptp4l[2699.552]: selected best master clock b49691.fffe.b7a21c ptp4l[2699.552]: port 1: LISTENING to UNCALIBRATED on RS_SLAVE ptp4l[2699.594]: port 1: delay timeout ptp4l[2699.627]: negative delay -2567 ptp4l[2699.628]: delay = (t2 - t3) * rr + (t4 - t1) ptp4l[2699.628]: t2 - t3 = -62117995 ptp4l[2699.628]: t4 - t1 = +62112860 ptp4l[2699.661]: rr = 1.000000000 ptp4l[2699.661]: delay filtered -2567 raw -2567 ptp4l[2699.661]: u_pi_state 1 ptp4l[2699.695]: u_pi_last_freq 2000.000000 ptp4l[2699.695]: u_pi_offset 1271227 ptp4l[2699.695]: u_pi_freq 2000.000000 ptp4l[2699.728]: u_pi_freq_diff 0.000000 ptp4l[2699.728]: u_pi_lock_check_cnt 0/100 ptp4l[2699.729]: u_pi_unlock_check_cnt 0/100 ptp4l[2699.729]: u_pi_offset_mavg_result 17846/100 ptp4l[2699.762]: u_pi_freq_mavg_result 0.000000/50.000000 ptp4l[2699.762]: share_lock_status 0 ptp4l[2699.763]: u_pi_bring_up_core1_flag 0 ptp4l[2699.796]: ptp_sync_status 0 ptp4l[2699.796]: ptp_freq 2000 ptp4l[2699.796]: ptp_rms 672288 ptp4l[2699.796]: ptp_rms_max 1029942 ptp4l[2699.829]: ptp_delay -3330 ptp4l[2699.830]: reserved 0 sending: GET CURRENT_DATA_SET aabbcc.fffe.ddee27-0 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 1 offsetFromMaster 116346207.0 meanPathDelay -752.0 b49691.fffe.b7a21c-1 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 0 offsetFromMaster 0.0 meanPathDelay 0.0 :/usr/linuxptp# ./pmc -u -b 1 -d 44 'GET CURRENT_DATA_SET'sending: GET CURRENT_DATA_SET aabbcc.fffe.ddee27-0 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 1 offsetFromMaster 364137.0 meanPathDelay -876.0 pmc -u -b 1 -d 44 'GET CURRENT_DATA_SET'sending: GET CURRENT_DATA_SET aabbcc.fffe.ddee27-0 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 1 offsetFromMaster 364137.0 meanPathDelay -876.0 ./pmc -u -b 1 -d 44 'GET CURRENT_DATA_SET' sending: GET CURRENT_DATA_SET aabbcc.fffe.ddee27-0 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 1 offsetFromMaster 115345133.0 meanPathDelay -2406.0 b49691.fffe.b7a21c-1 seq 0 RESPONSE MANAGEMENT CURRENT_DATA_SET stepsRemoved 0 offsetFromMaster 0.0 meanPathDelay 0.0 Thanks for help, Kind Regards
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