1# 2# PPS clients configuration 3# 4 5if PPS 6 7comment "PPS clients support" 8 9config PPS_CLIENT_KTIMER 10 tristate "Kernel timer client (Testing client, use for debug)" 11 help 12 If you say yes here you get support for a PPS debugging client 13 which uses a kernel timer to generate the PPS signal. 14 15 This driver can also be built as a module. If so, the module 16 will be called pps-ktimer. 17 18config PPS_CLIENT_LDISC 19 tristate "PPS line discipline" 20 depends on PPS && TTY 21 help 22 If you say yes here you get support for a PPS source connected 23 with the CD (Carrier Detect) pin of your serial port. 24 25config PPS_CLIENT_PARPORT 26 tristate "Parallel port PPS client" 27 depends on PPS && PARPORT 28 help 29 If you say yes here you get support for a PPS source connected 30 with the interrupt pin of your parallel port. 31 32config PPS_CLIENT_GPIO 33 tristate "PPS client using GPIO" 34 depends on PPS 35 help 36 If you say yes here you get support for a PPS source using 37 GPIO. To be useful you must also register a platform device 38 specifying the GPIO pin and other options, usually in your board 39 setup. 40 41endif 42