7df88afab9
Recently the Linux kernel's PTP Hardware Clock interface was expanded to include a "write phase" mode where the clock servo in implemented in hardware. This mode hearkens back to the tradition ntp_adjtime interface, passing a measured offset into the kernel's servo. This patch adds a new configuration option and logic to support the write phase mode. Because the hardware's adjustment bandwidth may be limited, this mode is only activated when the servo reaches SERVO_LOCKED_STABLE state, in order to achieve reasonably fast locking times. Users may control the SERVO_LOCKED_STABLE state by configuring 'servo_offset_threshold' and 'servo_num_offset_values' accordingly. Example configuration file highlights: unicast_listen 1 logSyncInterval 0 logMinDelayReqInterval 0 first_step_threshold 0.001000000 step_threshold 0 clock_servo pi write_phase_mode 1 servo_offset_threshold 50 servo_num_offset_values 10 tsproc_mode raw Signed-off-by: Vincent Cheng <vincent.cheng.xh@renesas.com> Signed-off-by: Richard Cochran <richardcochran@gmail.com>
114 lines
2.1 KiB
INI
114 lines
2.1 KiB
INI
[global]
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#
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# Default Data Set
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#
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twoStepFlag 1
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slaveOnly 0
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socket_priority 0
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priority1 128
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priority2 128
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domainNumber 0
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#utc_offset 37
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clockClass 248
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clockAccuracy 0xFE
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offsetScaledLogVariance 0xFFFF
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free_running 0
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freq_est_interval 1
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dscp_event 0
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dscp_general 0
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dataset_comparison ieee1588
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G.8275.defaultDS.localPriority 128
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maxStepsRemoved 255
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#
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# Port Data Set
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#
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logAnnounceInterval 1
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logSyncInterval 0
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operLogSyncInterval 0
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logMinDelayReqInterval 0
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logMinPdelayReqInterval 0
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operLogPdelayReqInterval 0
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announceReceiptTimeout 3
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syncReceiptTimeout 0
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delayAsymmetry 0
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fault_reset_interval 4
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neighborPropDelayThresh 20000000
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masterOnly 0
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G.8275.portDS.localPriority 128
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asCapable auto
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BMCA ptp
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inhibit_announce 0
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inhibit_delay_req 0
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ignore_source_id 0
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#
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# Run time options
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#
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assume_two_step 0
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logging_level 6
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path_trace_enabled 0
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follow_up_info 0
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hybrid_e2e 0
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inhibit_multicast_service 0
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net_sync_monitor 0
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tc_spanning_tree 0
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tx_timestamp_timeout 1
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unicast_listen 0
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unicast_master_table 0
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unicast_req_duration 3600
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use_syslog 1
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verbose 0
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summary_interval 0
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kernel_leap 1
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check_fup_sync 0
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#
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# Servo Options
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#
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pi_proportional_const 0.0
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pi_integral_const 0.0
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pi_proportional_scale 0.0
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pi_proportional_exponent -0.3
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pi_proportional_norm_max 0.7
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pi_integral_scale 0.0
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pi_integral_exponent 0.4
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pi_integral_norm_max 0.3
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step_threshold 0.0
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first_step_threshold 0.00002
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max_frequency 900000000
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clock_servo pi
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sanity_freq_limit 200000000
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ntpshm_segment 0
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msg_interval_request 0
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servo_num_offset_values 10
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servo_offset_threshold 0
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write_phase_mode 0
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#
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# Transport options
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#
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transportSpecific 0x0
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ptp_dst_mac 01:1B:19:00:00:00
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p2p_dst_mac 01:80:C2:00:00:0E
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udp_ttl 1
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udp6_scope 0x0E
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uds_address /var/run/ptp4l
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#
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# Default interface options
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#
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clock_type OC
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network_transport UDPv4
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delay_mechanism E2E
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time_stamping hardware
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tsproc_mode filter
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delay_filter moving_median
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delay_filter_length 10
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egressLatency 0
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ingressLatency 0
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boundary_clock_jbod 0
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#
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# Clock description
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#
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productDescription ;;
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revisionData ;;
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manufacturerIdentity 00:00:00
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userDescription ;
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timeSource 0xA0
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