| # SPDX-License-Identifier: GPL-2.0-only |
| # |
| # PPS clients configuration |
| # |
| |
| comment "PPS clients support" |
| |
| config PPS_CLIENT_KTIMER |
| tristate "Kernel timer client (Testing client, use for debug)" |
| help |
| 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. |
| |
| config PPS_CLIENT_LDISC |
| tristate "PPS line discipline" |
| depends on TTY |
| help |
| If you say yes here you get support for a PPS source connected |
| with the CD (Carrier Detect) pin of your serial port. |
| |
| config PPS_CLIENT_PARPORT |
| tristate "Parallel port PPS client" |
| depends on PARPORT |
| help |
| If you say yes here you get support for a PPS source connected |
| with the interrupt pin of your parallel port. |
| |
| config PPS_CLIENT_GPIO |
| tristate "PPS client using GPIO" |
| help |
| If you say yes here you get support for a PPS source using |
| GPIO. To be useful you must also register a platform device |
| specifying the GPIO pin and other options, usually in your board |
| setup. |
