1 *ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2 697fb85fSRodolfo Giometti# 3 697fb85fSRodolfo Giometti# PPS clients configuration 4 697fb85fSRodolfo Giometti# 5 697fb85fSRodolfo Giometti 6 697fb85fSRodolfo Giometticomment "PPS clients support" 7 697fb85fSRodolfo Giometti 8 697fb85fSRodolfo Giometticonfig PPS_CLIENT_KTIMER 9 697fb85fSRodolfo Giometti tristate "Kernel timer client (Testing client, use for debug)" 10 697fb85fSRodolfo Giometti help 11 697fb85fSRodolfo Giometti If you say yes here you get support for a PPS debugging client 12 697fb85fSRodolfo Giometti which uses a kernel timer to generate the PPS signal. 13 697fb85fSRodolfo Giometti 14 697fb85fSRodolfo Giometti This driver can also be built as a module. If so, the module 15 697fb85fSRodolfo Giometti will be called pps-ktimer. 16 697fb85fSRodolfo Giometti 17 a0880df0SRodolfo Giometticonfig PPS_CLIENT_LDISC 18 a0880df0SRodolfo Giometti tristate "PPS line discipline" 19 ab4f5260SRobert P. J. Day depends on TTY 20 a0880df0SRodolfo Giometti help 21 a0880df0SRodolfo Giometti If you say yes here you get support for a PPS source connected 22 a0880df0SRodolfo Giometti with the CD (Carrier Detect) pin of your serial port. 23 a0880df0SRodolfo Giometti 24 a10203c6SAlexander Gordeevconfig PPS_CLIENT_PARPORT 25 a10203c6SAlexander Gordeev tristate "Parallel port PPS client" 26 ab4f5260SRobert P. J. Day depends on PARPORT 27 a10203c6SAlexander Gordeev help 28 a10203c6SAlexander Gordeev If you say yes here you get support for a PPS source connected 29 a10203c6SAlexander Gordeev with the interrupt pin of your parallel port. 30 a10203c6SAlexander Gordeev 31 16152045SJames Nussconfig PPS_CLIENT_GPIO 32 16152045SJames Nuss tristate "PPS client using GPIO" 33 16152045SJames Nuss help 34 16152045SJames Nuss If you say yes here you get support for a PPS source using 35 16152045SJames Nuss GPIO. To be useful you must also register a platform device 36 16152045SJames Nuss specifying the GPIO pin and other options, usually in your board 37 16152045SJames Nuss setup. 38