mirror of https://github.com/torvalds/linux.git
51 lines
1.7 KiB
Plaintext
51 lines
1.7 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# PPS generators configuration
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#
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menuconfig PPS_GENERATOR
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tristate "PPS generators support"
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help
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PPS generators are special hardware which are able to produce PPS
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(Pulse Per Second) signals.
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To compile this driver as a module, choose M here: the module
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will be called pps_gen_core.
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if PPS_GENERATOR
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config PPS_GENERATOR_DUMMY
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tristate "Dummy PPS generator (Testing generator, use for debug)"
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help
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If you say yes here you get support for a PPS debugging generator
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(which generates no PPS signal at all).
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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_gen-dummy.
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config PPS_GENERATOR_PARPORT
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tristate "Parallel port PPS signal generator"
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depends on PARPORT && BROKEN
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help
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If you say yes here you get support for a PPS signal generator which
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utilizes STROBE pin of a parallel port to send PPS signals. It uses
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parport abstraction layer and hrtimers to precisely control the signal.
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config PPS_GENERATOR_TIO
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tristate "TIO PPS signal generator"
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depends on X86 && CPU_SUP_INTEL
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help
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If you say yes here you get support for a PPS TIO signal generator
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which generates a pulse at a prescribed time based on the system clock.
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It uses time translation and hrtimers to precisely generate a pulse.
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This hardware is present on 2019 and newer Intel CPUs. However, this
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driver is not useful without adding highly specialized hardware outside
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the Linux system to observe these pulses.
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To compile this driver as a module, choose M here: the module
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will be called pps_gen_tio.
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If unsure, say N.
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endif # PPS_GENERATOR
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