1*ec8f24b7SThomas Gleixner# SPDX-License-Identifier: GPL-2.0-only 2697fb85fSRodolfo Giometti# 3697fb85fSRodolfo Giometti# PPS clients configuration 4697fb85fSRodolfo Giometti# 5697fb85fSRodolfo Giometti 6697fb85fSRodolfo Giometticomment "PPS clients support" 7697fb85fSRodolfo Giometti 8697fb85fSRodolfo Giometticonfig PPS_CLIENT_KTIMER 9697fb85fSRodolfo Giometti tristate "Kernel timer client (Testing client, use for debug)" 10697fb85fSRodolfo Giometti help 11697fb85fSRodolfo Giometti If you say yes here you get support for a PPS debugging client 12697fb85fSRodolfo Giometti which uses a kernel timer to generate the PPS signal. 13697fb85fSRodolfo Giometti 14697fb85fSRodolfo Giometti This driver can also be built as a module. If so, the module 15697fb85fSRodolfo Giometti will be called pps-ktimer. 16697fb85fSRodolfo Giometti 17a0880df0SRodolfo Giometticonfig PPS_CLIENT_LDISC 18a0880df0SRodolfo Giometti tristate "PPS line discipline" 19ab4f5260SRobert P. J. Day depends on TTY 20a0880df0SRodolfo Giometti help 21a0880df0SRodolfo Giometti If you say yes here you get support for a PPS source connected 22a0880df0SRodolfo Giometti with the CD (Carrier Detect) pin of your serial port. 23a0880df0SRodolfo Giometti 24a10203c6SAlexander Gordeevconfig PPS_CLIENT_PARPORT 25a10203c6SAlexander Gordeev tristate "Parallel port PPS client" 26ab4f5260SRobert P. J. Day depends on PARPORT 27a10203c6SAlexander Gordeev help 28a10203c6SAlexander Gordeev If you say yes here you get support for a PPS source connected 29a10203c6SAlexander Gordeev with the interrupt pin of your parallel port. 30a10203c6SAlexander Gordeev 3116152045SJames Nussconfig PPS_CLIENT_GPIO 3216152045SJames Nuss tristate "PPS client using GPIO" 3316152045SJames Nuss help 3416152045SJames Nuss If you say yes here you get support for a PPS source using 3516152045SJames Nuss GPIO. To be useful you must also register a platform device 3616152045SJames Nuss specifying the GPIO pin and other options, usually in your board 3716152045SJames Nuss setup. 38