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