mirror of https://gitee.com/openkylin/linux.git
38 lines
1.1 KiB
Plaintext
38 lines
1.1 KiB
Plaintext
# 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.
|