1*eae9d2baSRodolfo Giometti# 2*eae9d2baSRodolfo Giometti# PPS support configuration 3*eae9d2baSRodolfo Giometti# 4*eae9d2baSRodolfo Giometti 5*eae9d2baSRodolfo Giomettimenu "PPS support" 6*eae9d2baSRodolfo Giometti 7*eae9d2baSRodolfo Giometticonfig PPS 8*eae9d2baSRodolfo Giometti tristate "PPS support" 9*eae9d2baSRodolfo Giometti depends on EXPERIMENTAL 10*eae9d2baSRodolfo Giometti ---help--- 11*eae9d2baSRodolfo Giometti PPS (Pulse Per Second) is a special pulse provided by some GPS 12*eae9d2baSRodolfo Giometti antennae. Userland can use it to get a high-precision time 13*eae9d2baSRodolfo Giometti reference. 14*eae9d2baSRodolfo Giometti 15*eae9d2baSRodolfo Giometti Some antennae's PPS signals are connected with the CD (Carrier 16*eae9d2baSRodolfo Giometti Detect) pin of the serial line they use to communicate with the 17*eae9d2baSRodolfo Giometti host. In this case use the SERIAL_LINE client support. 18*eae9d2baSRodolfo Giometti 19*eae9d2baSRodolfo Giometti Some antennae's PPS signals are connected with some special host 20*eae9d2baSRodolfo Giometti inputs so you have to enable the corresponding client support. 21*eae9d2baSRodolfo Giometti 22*eae9d2baSRodolfo Giometti To compile this driver as a module, choose M here: the module 23*eae9d2baSRodolfo Giometti will be called pps_core.ko. 24*eae9d2baSRodolfo Giometti 25*eae9d2baSRodolfo Giometticonfig PPS_DEBUG 26*eae9d2baSRodolfo Giometti bool "PPS debugging messages" 27*eae9d2baSRodolfo Giometti depends on PPS 28*eae9d2baSRodolfo Giometti help 29*eae9d2baSRodolfo Giometti Say Y here if you want the PPS support to produce a bunch of debug 30*eae9d2baSRodolfo Giometti messages to the system log. Select this if you are having a 31*eae9d2baSRodolfo Giometti problem with PPS support and want to see more of what is going on. 32*eae9d2baSRodolfo Giometti 33*eae9d2baSRodolfo Giomettiendmenu 34