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1# SPDX-License-Identifier: GPL-2.0-only
2#
3# PPS generators configuration
4#
5
6menuconfig PPS_GENERATOR
7 tristate "PPS generators support"
8 help
9 PPS generators are special hardware which are able to produce PPS
10 (Pulse Per Second) signals.
11
12 To compile this driver as a module, choose M here: the module
13 will be called pps_gen_core.
14
15if PPS_GENERATOR
16
17config PPS_GENERATOR_DUMMY
18 tristate "Dummy PPS generator (Testing generator, use for debug)"
19 help
20 If you say yes here you get support for a PPS debugging generator
21 (which generates no PPS signal at all).
22
23 This driver can also be built as a module. If so, the module
24 will be called pps_gen-dummy.
25
26config PPS_GENERATOR_PARPORT
27 tristate "Parallel port PPS signal generator"
28 depends on PARPORT && BROKEN
29 help
30 If you say yes here you get support for a PPS signal generator which
31 utilizes STROBE pin of a parallel port to send PPS signals. It uses
32 parport abstraction layer and hrtimers to precisely control the signal.
33
34config PPS_GENERATOR_TIO
35 tristate "TIO PPS signal generator"
36 depends on X86 && CPU_SUP_INTEL
37 help
38 If you say yes here you get support for a PPS TIO signal generator
39 which generates a pulse at a prescribed time based on the system clock.
40 It uses time translation and hrtimers to precisely generate a pulse.
41 This hardware is present on 2019 and newer Intel CPUs. However, this
42 driver is not useful without adding highly specialized hardware outside
43 the Linux system to observe these pulses.
44
45 To compile this driver as a module, choose M here: the module
46 will be called pps_gen_tio.
47
48 If unsure, say N.
49
50endif # PPS_GENERATOR