tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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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 select PPS
12 select NET_PTP_CLASSIFY
13 help
14 The IEEE 1588 standard defines a method to precisely
15 synchronize distributed clocks over Ethernet networks. The
16 standard defines a Precision Time Protocol (PTP), which can
17 be used to achieve synchronization within a few dozen
18 microseconds. In addition, with the help of special hardware
19 time stamping units, it can be possible to achieve
20 synchronization to within a few hundred nanoseconds.
21
22 This driver adds support for PTP clocks as character
23 devices. If you want to use a PTP clock, then you should
24 also enable at least one clock driver as well.
25
26 To compile this driver as a module, choose M here: the module
27 will be called ptp.
28
29config PTP_1588_CLOCK_DTE
30 tristate "Broadcom DTE as PTP clock"
31 depends on PTP_1588_CLOCK
32 depends on NET && HAS_IOMEM
33 depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
34 default y
35 help
36 This driver adds support for using the Digital timing engine
37 (DTE) in the Broadcom SoC's as a PTP clock.
38
39 The clock can be used in both wired and wireless networks
40 for PTP purposes.
41
42 To compile this driver as a module, choose M here: the module
43 will be called ptp_dte.
44
45config PTP_1588_CLOCK_QORIQ
46 tristate "Freescale QorIQ 1588 timer as PTP clock"
47 depends on GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST
48 depends on PTP_1588_CLOCK
49 default y
50 help
51 This driver adds support for using the Freescale QorIQ 1588
52 timer as a PTP clock. This clock is only useful if your PTP
53 programs are getting hardware time stamps on the PTP Ethernet
54 packets using the SO_TIMESTAMPING API.
55
56 To compile this driver as a module, choose M here: the module
57 will be called ptp-qoriq.
58
59comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
60 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
61
62config DP83640_PHY
63 tristate "Driver for the National Semiconductor DP83640 PHYTER"
64 depends on NETWORK_PHY_TIMESTAMPING
65 depends on PHYLIB
66 depends on PTP_1588_CLOCK
67 select CRC32
68 help
69 Supports the DP83640 PHYTER with IEEE 1588 features.
70
71 This driver adds support for using the DP83640 as a PTP
72 clock. This clock is only useful if your PTP programs are
73 getting hardware time stamps on the PTP Ethernet packets
74 using the SO_TIMESTAMPING API.
75
76 In order for this to work, your MAC driver must also
77 implement the skb_tx_timestamp() function.
78
79config PTP_1588_CLOCK_INES
80 tristate "ZHAW InES PTP time stamping IP core"
81 depends on NETWORK_PHY_TIMESTAMPING
82 depends on HAS_IOMEM
83 depends on PHYLIB
84 depends on PTP_1588_CLOCK
85 help
86 This driver adds support for using the ZHAW InES 1588 IP
87 core. This clock is only useful if the MII bus of your MAC
88 is wired up to the core.
89
90config PTP_1588_CLOCK_PCH
91 tristate "Intel PCH EG20T as PTP clock"
92 depends on X86_32 || COMPILE_TEST
93 depends on HAS_IOMEM && NET
94 imply PTP_1588_CLOCK
95 help
96 This driver adds support for using the PCH EG20T as a PTP
97 clock. The hardware supports time stamping of PTP packets
98 when using the end-to-end delay (E2E) mechanism. The peer
99 delay mechanism (P2P) is not supported.
100
101 This clock is only useful if your PTP programs are getting
102 hardware time stamps on the PTP Ethernet packets using the
103 SO_TIMESTAMPING API.
104
105 To compile this driver as a module, choose M here: the module
106 will be called ptp_pch.
107
108config PTP_1588_CLOCK_KVM
109 tristate "KVM virtual PTP clock"
110 depends on PTP_1588_CLOCK
111 depends on KVM_GUEST && X86
112 default y
113 help
114 This driver adds support for using kvm infrastructure as a PTP
115 clock. This clock is only useful if you are using KVM guests.
116
117 To compile this driver as a module, choose M here: the module
118 will be called ptp_kvm.
119
120config PTP_1588_CLOCK_IDT82P33
121 tristate "IDT 82P33xxx PTP clock"
122 depends on PTP_1588_CLOCK && I2C
123 default n
124 help
125 This driver adds support for using the IDT 82P33xxx as a PTP
126 clock. This clock is only useful if your time stamping MAC
127 is connected to the IDT chip.
128
129 To compile this driver as a module, choose M here: the module
130 will be called ptp_idt82p33.
131
132config PTP_1588_CLOCK_IDTCM
133 tristate "IDT CLOCKMATRIX as PTP clock"
134 depends on PTP_1588_CLOCK && I2C
135 default n
136 help
137 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
138 clock. This clock is only useful if your time stamping MAC
139 is connected to the IDT chip.
140
141 To compile this driver as a module, choose M here: the module
142 will be called ptp_clockmatrix.
143
144config PTP_1588_CLOCK_VMW
145 tristate "VMware virtual PTP clock"
146 depends on ACPI && HYPERVISOR_GUEST && X86
147 depends on PTP_1588_CLOCK
148 help
149 This driver adds support for using VMware virtual precision
150 clock device as a PTP clock. This is only useful in virtual
151 machines running on VMware virtual infrastructure.
152
153 To compile this driver as a module, choose M here: the module
154 will be called ptp_vmw.
155
156config PTP_1588_CLOCK_OCP
157 tristate "OpenCompute TimeCard as PTP clock"
158 depends on PTP_1588_CLOCK
159 depends on HAS_IOMEM && PCI
160 default n
161 help
162 This driver adds support for an OpenCompute time card.
163
164 The OpenCompute time card is an atomic clock along with
165 a GPS receiver that provides a Grandmaster clock source
166 for a PTP enabled network.
167
168 More information is available at http://www.timingcard.com/
169
170endmenu