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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
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
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 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_IDT82P33
135 tristate "IDT 82P33xxx PTP clock"
136 depends on PTP_1588_CLOCK && I2C
137 default n
138 help
139 This driver adds support for using the IDT 82P33xxx as a PTP
140 clock. This clock is only useful if your time stamping MAC
141 is connected to the IDT chip.
142
143 To compile this driver as a module, choose M here: the module
144 will be called ptp_idt82p33.
145
146config PTP_1588_CLOCK_IDTCM
147 tristate "IDT CLOCKMATRIX as PTP clock"
148 depends on PTP_1588_CLOCK && I2C
149 default n
150 help
151 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
152 clock. This clock is only useful if your time stamping MAC
153 is connected to the IDT chip.
154
155 To compile this driver as a module, choose M here: the module
156 will be called ptp_clockmatrix.
157
158config PTP_1588_CLOCK_VMW
159 tristate "VMware virtual PTP clock"
160 depends on ACPI && HYPERVISOR_GUEST && X86
161 depends on PTP_1588_CLOCK
162 help
163 This driver adds support for using VMware virtual precision
164 clock device as a PTP clock. This is only useful in virtual
165 machines running on VMware virtual infrastructure.
166
167 To compile this driver as a module, choose M here: the module
168 will be called ptp_vmw.
169
170config PTP_1588_CLOCK_OCP
171 tristate "OpenCompute TimeCard as PTP clock"
172 depends on PTP_1588_CLOCK
173 depends on HAS_IOMEM && PCI
174 depends on I2C && MTD
175 depends on SERIAL_8250
176 depends on !S390
177 depends on COMMON_CLK
178 select NET_DEVLINK
179 select CRC16
180 help
181 This driver adds support for an OpenCompute time card.
182
183 The OpenCompute time card is an atomic clock along with
184 a GPS receiver that provides a Grandmaster clock source
185 for a PTP enabled network.
186
187 More information is available at http://www.timingcard.com/
188
189config PTP_DFL_TOD
190 tristate "FPGA DFL ToD Driver"
191 depends on FPGA_DFL
192 depends on PTP_1588_CLOCK
193 help
194 The DFL (Device Feature List) device driver for the Intel ToD
195 (Time-of-Day) device in FPGA card. The ToD IP within the FPGA
196 is exposed as PTP Hardware Clock (PHC) device to the Linux PTP
197 stack to synchronize the system clock to its ToD information
198 using phc2sys utility of the Linux PTP stack.
199
200 To compile this driver as a module, choose M here: the module
201 will be called ptp_dfl_tod.
202
203endmenu