2 # PPS clients configuration
7 comment "PPS clients support"
9 config PPS_CLIENT_KTIMER
10 tristate "Kernel timer client (Testing client, use for debug)"
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.
15 This driver can also be built as a module. If so, the module
16 will be called pps-ktimer.
18 config PPS_CLIENT_LDISC
19 tristate "PPS line discipline"
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.
25 config PPS_CLIENT_PARPORT
26 tristate "Parallel port PPS client"
27 depends on PPS && PARPORT
29 If you say yes here you get support for a PPS source connected
30 with the interrupt pin of your parallel port.
32 config PPS_CLIENT_GPIO
33 tristate "PPS client using GPIO"
34 depends on PPS && GENERIC_HARDIRQS
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