| # 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. |