diff options
Diffstat (limited to 'kernel/drivers/pps/Kconfig')
| -rw-r--r-- | kernel/drivers/pps/Kconfig | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/kernel/drivers/pps/Kconfig b/kernel/drivers/pps/Kconfig new file mode 100644 index 000000000..7512e98e9 --- /dev/null +++ b/kernel/drivers/pps/Kconfig @@ -0,0 +1,47 @@ +# +# PPS support configuration +# + +menu "PPS support" + +config PPS + tristate "PPS support" + ---help--- + PPS (Pulse Per Second) is a special pulse provided by some GPS + antennae. Userland can use it to get a high-precision time + reference. + + Some antennae's PPS signals are connected with the CD (Carrier + Detect) pin of the serial line they use to communicate with the + host. In this case use the SERIAL_LINE client support. + + Some antennae's PPS signals are connected with some special host + inputs so you have to enable the corresponding client support. + + To compile this driver as a module, choose M here: the module + will be called pps_core.ko. +if PPS + +config PPS_DEBUG + bool "PPS debugging messages" + help + Say Y here if you want the PPS support to produce a bunch of debug + messages to the system log. Select this if you are having a + problem with PPS support and want to see more of what is going on. + +config NTP_PPS + bool "PPS kernel consumer support" + depends on !NO_HZ + help + This option adds support for direct in-kernel time + synchronization using an external PPS signal. + + It doesn't work on tickless systems at the moment. + +endif + +source drivers/pps/clients/Kconfig + +source drivers/pps/generators/Kconfig + +endmenu |