drivers/pps/clients/Kconfig v3.0-rc7

PPS clients support

PPS_CLIENT_KTIMER

Kernel timer client (Testing client, use for debug)

If you say yes here you get support for a PPS debugging client
which uses a kernel timer to generate the PPS signal.

This driver can also be built as a module.  If so, the module
will be called pps-ktimer.

PPS_CLIENT_LDISC

PPS line discipline

If you say yes here you get support for a PPS source connected
with the CD (Carrier Detect) pin of your serial port.

PPS_CLIENT_PARPORT

Parallel port PPS client

If you say yes here you get support for a PPS source connected
with the interrupt pin of your parallel port.