Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / pps / Kconfig

diff --git a/kernel/drivers/pps/Kconfig b/kernel/drivers/pps/Kconfig
new file mode 100644 (file)
index 0000000..7512e98
--- /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