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kernel/pub/scm/linux/kernel/git/mda/linuxptp/5ce45bd1a93674fc9cf48552c7a4d2e07b286be5
commit
5ce45bd1a93674fc9cf48552c7a4d2e07b286be5
[log]
author
Miroslav Lichvar <mlichvar@redhat.com>
Thu May 16 15:52:49 2024 +0200
committer
Richard Cochran <richardcochran@gmail.com>
Sun Jul 21 17:20:58 2024 -0700
tree
105289beb4b1f8861c0a5e979b45b46fe6ff9fc9
parent
9c48f5d7765f63d54669d202adbd2cf959abd2cf [diff]
ts2phc: Add holdover support.

If the external PPS signal is generated by a clock with better long-term
stability than the clock synchronizing to it, it can work as a good time
source for some period of time after losing its own time source (e.g.
GPS receiver losing its signal).

Add an option to specify a holdover interval where ts2phc can continue
synchronizing the clock without any ToD information. Allow that only in
the LOCKED_STABLE servo state, which needs to be enabled by the
servo_num_offset_values option.

This is supported only in the non-automatic mode and when the pulse
polarity detection is disabled.

Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>
4 files changed
tree: 105289beb4b1f8861c0a5e979b45b46fe6ff9fc9
  1. configs/
  2. .gitignore
  3. address.h
  4. as_capable.h
  5. bmc.c
  6. bmc.h
  7. clock.c
  8. clock.h
  9. clockadj.c
  10. clockadj.h
  11. clockcheck.c
  12. clockcheck.h
  13. CODING_STYLE.org
  14. config.c
  15. config.h
  16. contain.h
  17. COPYING
  18. ddt.h
  19. designated_fsm.c
  20. designated_fsm.h
  21. dm.h
  22. ds.h
  23. e2e_tc.c
  24. ether.h
  25. fault.c
  26. fault.h
  27. fd.h
  28. filter.c
  29. filter.h
  30. filter_private.h
  31. foreign.h
  32. fsm.c
  33. fsm.h
  34. hash.c
  35. hash.h
  36. hwstamp_ctl.8
  37. hwstamp_ctl.c
  38. incdefs.sh
  39. interface.c
  40. interface.h
  41. linreg.c
  42. linreg.h
  43. lstab.c
  44. lstab.h
  45. makefile
  46. mave.c
  47. mave.h
  48. missing.h
  49. mmedian.c
  50. mmedian.h
  51. monitor.c
  52. monitor.h
  53. msg.c
  54. msg.h
  55. mtab.h
  56. nmea.c
  57. nmea.h
  58. notification.h
  59. nsm.8
  60. nsm.c
  61. ntpshm.c
  62. ntpshm.h
  63. nullf.c
  64. nullf.h
  65. p2p_tc.c
  66. pdt.h
  67. phc.c
  68. phc.h
  69. phc2sys.8
  70. phc2sys.c
  71. phc_ctl.8
  72. phc_ctl.c
  73. pi.c
  74. pi.h
  75. pmc.8
  76. pmc.c
  77. pmc_agent.c
  78. pmc_agent.h
  79. pmc_common.c
  80. pmc_common.h
  81. port.c
  82. port.h
  83. port_private.h
  84. port_signaling.c
  85. power_profile.h
  86. pqueue.c
  87. pqueue.h
  88. print.c
  89. print.h
  90. ptp4l.8
  91. ptp4l.c
  92. raw.c
  93. raw.h
  94. README.org
  95. refclock_sock.c
  96. refclock_sock.h
  97. rtnl.c
  98. rtnl.h
  99. sad.c
  100. sad.h
  101. sad_gnupg.c
  102. sad_gnutls.c
  103. sad_nettle.c
  104. sad_openssl.c
  105. sad_private.h
  106. serial.c
  107. serial.h
  108. servo.c
  109. servo.h
  110. servo_private.h
  111. sk.c
  112. sk.h
  113. sock.c
  114. sock.h
  115. stats.c
  116. stats.h
  117. sysoff.c
  118. sysoff.h
  119. tc.c
  120. tc.h
  121. telecom.c
  122. timemaster.8
  123. timemaster.c
  124. tlv.c
  125. tlv.h
  126. tmv.h
  127. transport.c
  128. transport.h
  129. transport_private.h
  130. ts2phc.8
  131. ts2phc.c
  132. ts2phc.h
  133. ts2phc_generic_pps_source.c
  134. ts2phc_generic_pps_source.h
  135. ts2phc_nmea_pps_source.c
  136. ts2phc_nmea_pps_source.h
  137. ts2phc_phc_pps_source.c
  138. ts2phc_phc_pps_source.h
  139. ts2phc_pps_sink.c
  140. ts2phc_pps_sink.h
  141. ts2phc_pps_source.c
  142. ts2phc_pps_source.h
  143. ts2phc_pps_source_private.h
  144. tsproc.c
  145. tsproc.h
  146. tz.h
  147. tz2alt.8
  148. tz2alt.c
  149. udp.c
  150. udp.h
  151. udp6.c
  152. udp6.h
  153. uds.c
  154. uds.h
  155. unicast_client.c
  156. unicast_client.h
  157. unicast_fsm.c
  158. unicast_fsm.h
  159. unicast_service.c
  160. unicast_service.h
  161. util.c
  162. util.h
  163. version.c
  164. version.h
  165. version.sh