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linux
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# PTP clock support configuration
4#
5
6menu "PTP clock support"
7
8config PTP_1588_CLOCK
9 tristate "PTP clock support"
10 depends on NET && POSIX_TIMERS
11 default ETHERNET
12 select PPS
13 select NET_PTP_CLASSIFY
14 help
15 The IEEE 1588 standard defines a method to precisely
16 synchronize distributed clocks over Ethernet networks. The
17 standard defines a Precision Time Protocol (PTP), which can
18 be used to achieve synchronization within a few dozen
19 microseconds. In addition, with the help of special hardware
20 time stamping units, it can be possible to achieve
21 synchronization to within a few hundred nanoseconds.
22
23 This driver adds support for PTP clocks as character
24 devices. If you want to use a PTP clock, then you should
25 also enable at least one clock driver as well.
26
27 To compile this driver as a module, choose M here: the module
28 will be called ptp.
29
30config PTP_1588_CLOCK_OPTIONAL
31 tristate
32 default y if PTP_1588_CLOCK=n
33 default PTP_1588_CLOCK
34 help
35 Drivers that can optionally use the PTP_1588_CLOCK framework
36 should depend on this symbol to prevent them from being built
37 into vmlinux while the PTP support itself is in a loadable
38 module.
39 If PTP support is disabled, this dependency will still be
40 met, and drivers refer to dummy helpers.
41
42config PTP_1588_CLOCK_DTE
43 tristate "Broadcom DTE as PTP clock"
44 depends on PTP_1588_CLOCK
45 depends on NET && HAS_IOMEM
46 depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
47 default y if ARCH_BCM_MOBILE || ARCH_BCM_IPROC
48 help
49 This driver adds support for using the Digital timing engine
50 (DTE) in the Broadcom SoC's as a PTP clock.
51
52 The clock can be used in both wired and wireless networks
53 for PTP purposes.
54
55 To compile this driver as a module, choose M here: the module
56 will be called ptp_dte.
57
58config PTP_1588_CLOCK_QORIQ
59 tristate "Freescale QorIQ 1588 timer as PTP clock"
60 depends on GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST
61 depends on PTP_1588_CLOCK
62 default y if GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF
63 help
64 This driver adds support for using the Freescale QorIQ 1588
65 timer as a PTP clock. This clock is only useful if your PTP
66 programs are getting hardware time stamps on the PTP Ethernet
67 packets using the SO_TIMESTAMPING API.
68
69 To compile this driver as a module, choose M here: the module
70 will be called ptp_qoriq.
71
72comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
73 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
74
75config DP83640_PHY
76 tristate "Driver for the National Semiconductor DP83640 PHYTER"
77 depends on NETWORK_PHY_TIMESTAMPING
78 depends on PHYLIB
79 depends on PTP_1588_CLOCK
80 select CRC32
81 help
82 Supports the DP83640 PHYTER with IEEE 1588 features.
83
84 This driver adds support for using the DP83640 as a PTP
85 clock. This clock is only useful if your PTP programs are
86 getting hardware time stamps on the PTP Ethernet packets
87 using the SO_TIMESTAMPING API.
88
89 In order for this to work, your MAC driver must also
90 implement the skb_tx_timestamp() function.
91
92config PTP_1588_CLOCK_INES
93 tristate "ZHAW InES PTP time stamping IP core"
94 depends on NETWORK_PHY_TIMESTAMPING
95 depends on HAS_IOMEM
96 depends on PHYLIB
97 depends on PTP_1588_CLOCK
98 help
99 This driver adds support for using the ZHAW InES 1588 IP
100 core. This clock is only useful if the MII bus of your MAC
101 is wired up to the core.
102
103config PTP_1588_CLOCK_PCH
104 tristate "Intel PCH EG20T as PTP clock"
105 depends on MIPS_GENERIC || X86_32 || COMPILE_TEST
106 depends on HAS_IOMEM && PCI
107 depends on NET
108 depends on PTP_1588_CLOCK
109 help
110 This driver adds support for using the PCH EG20T as a PTP
111 clock. The hardware supports time stamping of PTP packets
112 when using the end-to-end delay (E2E) mechanism. The peer
113 delay mechanism (P2P) is not supported.
114
115 This clock is only useful if your PTP programs are getting
116 hardware time stamps on the PTP Ethernet packets using the
117 SO_TIMESTAMPING API.
118
119 To compile this driver as a module, choose M here: the module
120 will be called ptp_pch.
121
122config PTP_1588_CLOCK_KVM
123 tristate "KVM virtual PTP clock"
124 depends on PTP_1588_CLOCK
125 depends on (KVM_GUEST && X86) || (HAVE_ARM_SMCCC_DISCOVERY && ARM_ARCH_TIMER)
126 default y
127 help
128 This driver adds support for using kvm infrastructure as a PTP
129 clock. This clock is only useful if you are using KVM guests.
130
131 To compile this driver as a module, choose M here: the module
132 will be called ptp_kvm.
133
134config PTP_1588_CLOCK_VMCLOCK
135 tristate "Virtual machine PTP clock"
136 depends on X86_TSC || ARM_ARCH_TIMER
137 depends on PTP_1588_CLOCK && ACPI && ARCH_SUPPORTS_INT128
138 default PTP_1588_CLOCK_KVM
139 help
140 This driver adds support for using a virtual precision clock
141 advertised by the hypervisor. This clock is only useful in virtual
142 machines where such a device is present.
143
144 Unlike the KVM virtual PTP clock, the VMCLOCK device offers support
145 for reliable timekeeping even across live migration. So this driver
146 is enabled by default whenever the KVM PTP clock is.
147
148 To compile this driver as a module, choose M here: the module
149 will be called ptp_vmclock.
150
151config PTP_1588_CLOCK_IDT82P33
152 tristate "IDT 82P33xxx PTP clock"
153 depends on PTP_1588_CLOCK && I2C
154 default n
155 help
156 This driver adds support for using the IDT 82P33xxx as a PTP
157 clock. This clock is only useful if your time stamping MAC
158 is connected to the IDT chip.
159
160 To compile this driver as a module, choose M here: the module
161 will be called ptp_idt82p33.
162
163config PTP_1588_CLOCK_IDTCM
164 tristate "IDT CLOCKMATRIX as PTP clock"
165 depends on PTP_1588_CLOCK && I2C
166 default n
167 help
168 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
169 clock. This clock is only useful if your time stamping MAC
170 is connected to the IDT chip.
171
172 To compile this driver as a module, choose M here: the module
173 will be called ptp_clockmatrix.
174
175config PTP_1588_CLOCK_FC3W
176 tristate "RENESAS FemtoClock3 Wireless as PTP clock"
177 depends on PTP_1588_CLOCK && I2C
178 default n
179 help
180 This driver adds support for using Renesas FemtoClock3 Wireless
181 as a PTP clock. This clock is only useful if your time stamping
182 MAC is connected to the RENESAS chip.
183
184 To compile this driver as a module, choose M here: the module
185 will be called ptp_fc3.
186
187config PTP_1588_CLOCK_MOCK
188 tristate "Mock-up PTP clock"
189 depends on PTP_1588_CLOCK
190 help
191 This driver offers a set of PTP clock manipulation operations over
192 the system monotonic time. It can be used by virtual network device
193 drivers to emulate PTP capabilities.
194
195 To compile this driver as a module, choose M here: the module
196 will be called ptp_mock.
197
198config PTP_1588_CLOCK_VMW
199 tristate "VMware virtual PTP clock"
200 depends on ACPI && HYPERVISOR_GUEST && X86
201 depends on PTP_1588_CLOCK
202 help
203 This driver adds support for using VMware virtual precision
204 clock device as a PTP clock. This is only useful in virtual
205 machines running on VMware virtual infrastructure.
206
207 To compile this driver as a module, choose M here: the module
208 will be called ptp_vmw.
209
210config PTP_1588_CLOCK_OCP
211 tristate "OpenCompute TimeCard as PTP clock"
212 depends on PTP_1588_CLOCK
213 depends on HAS_IOMEM && PCI
214 depends on I2C && MTD
215 depends on SERIAL_8250
216 depends on !S390
217 depends on COMMON_CLK
218 select NET_DEVLINK
219 select CRC16
220 select DPLL
221 help
222 This driver adds support for an OpenCompute time card.
223
224 The OpenCompute time card is an atomic clock along with
225 a GPS receiver that provides a Grandmaster clock source
226 for a PTP enabled network.
227
228 More information is available at http://www.timingcard.com/
229
230config PTP_DFL_TOD
231 tristate "FPGA DFL ToD Driver"
232 depends on FPGA_DFL
233 depends on PTP_1588_CLOCK
234 help
235 The DFL (Device Feature List) device driver for the Intel ToD
236 (Time-of-Day) device in FPGA card. The ToD IP within the FPGA
237 is exposed as PTP Hardware Clock (PHC) device to the Linux PTP
238 stack to synchronize the system clock to its ToD information
239 using phc2sys utility of the Linux PTP stack.
240
241 To compile this driver as a module, choose M here: the module
242 will be called ptp_dfl_tod.
243
244config PTP_S390
245 tristate "S390 PTP driver"
246 depends on PTP_1588_CLOCK
247 depends on S390
248 help
249 This driver adds support for S390 time steering via the PtP
250 interface. This works by adding a in-kernel clock delta value,
251 which is always added to time values used in the kernel. The PtP
252 driver provides the raw clock value without the delta to
253 userspace. That way userspace programs like chrony could steer
254 the kernel clock.
255
256config PTP_NETC_V4_TIMER
257 tristate "NXP NETC V4 Timer PTP Driver"
258 depends on PTP_1588_CLOCK
259 depends on PCI_MSI
260 help
261 This driver adds support for using the NXP NETC V4 Timer as a PTP
262 clock, the clock is used by ENETC V4 or NETC V4 Switch for PTP time
263 synchronization. It also supports periodic output signal (e.g. PPS)
264 and external trigger timestamping.
265
266endmenu