Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) # PPS support configuration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) menuconfig PPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 	tristate "PPS support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	  PPS (Pulse Per Second) is a special pulse provided by some GPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 	  antennae. Userland can use it to get a high-precision time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 	  reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	  Some antennae's PPS signals are connected with the CD (Carrier
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	  Detect) pin of the serial line they use to communicate with the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	  host. In this case use the SERIAL_LINE client support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	  Some antennae's PPS signals are connected with some special host
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	  inputs so you have to enable the corresponding client support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	  To compile this driver as a module, choose M here: the module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	  will be called pps_core.ko.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) if PPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) config PPS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	bool "PPS debugging messages"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	  Say Y here if you want the PPS support to produce a bunch of debug
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	  messages to the system log.  Select this if you are having a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	  problem with PPS support and want to see more of what is going on.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) config NTP_PPS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	bool "PPS kernel consumer support"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	depends on !NO_HZ_COMMON
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	help
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	  This option adds support for direct in-kernel time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	  synchronization using an external PPS signal.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	  It doesn't work on tickless systems at the moment.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) source "drivers/pps/clients/Kconfig"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) source "drivers/pps/generators/Kconfig"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) endif # PPS