Kconfig 1.1 KB

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  1. # SPDX-License-Identifier: GPL-2.0-only
  2. #
  3. # PPS clients configuration
  4. #
  5. comment "PPS clients support"
  6. config PPS_CLIENT_KTIMER
  7. tristate "Kernel timer client (Testing client, use for debug)"
  8. help
  9. If you say yes here you get support for a PPS debugging client
  10. which uses a kernel timer to generate the PPS signal.
  11. This driver can also be built as a module. If so, the module
  12. will be called pps-ktimer.
  13. config PPS_CLIENT_LDISC
  14. tristate "PPS line discipline"
  15. depends on TTY
  16. help
  17. If you say yes here you get support for a PPS source connected
  18. with the CD (Carrier Detect) pin of your serial port.
  19. config PPS_CLIENT_PARPORT
  20. tristate "Parallel port PPS client"
  21. depends on PARPORT
  22. help
  23. If you say yes here you get support for a PPS source connected
  24. with the interrupt pin of your parallel port.
  25. config PPS_CLIENT_GPIO
  26. tristate "PPS client using GPIO"
  27. help
  28. If you say yes here you get support for a PPS source using
  29. GPIO. To be useful you must also register a platform device
  30. specifying the GPIO pin and other options, usually in your board
  31. setup.