Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
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
59config PTP_1588_CLOCK_IXP46X
60 tristate "Intel IXP46x as PTP clock"
61 depends on IXP4XX_ETH
62 depends on PTP_1588_CLOCK
63 default y
64 help
65 This driver adds support for using the IXP46X as a PTP
66 clock. This clock is only useful if your PTP programs are
67 getting hardware time stamps on the PTP Ethernet packets
68 using the SO_TIMESTAMPING API.
69
70 To compile this driver as a module, choose M here: the module
71 will be called ptp_ixp46x.
72
73comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
74 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
75
76config DP83640_PHY
77 tristate "Driver for the National Semiconductor DP83640 PHYTER"
78 depends on NETWORK_PHY_TIMESTAMPING
79 depends on PHYLIB
80 depends on PTP_1588_CLOCK
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_PCH
93 tristate "Intel PCH EG20T as PTP clock"
94 depends on X86_32 || COMPILE_TEST
95 depends on HAS_IOMEM && NET
96 imply PTP_1588_CLOCK
97 help
98 This driver adds support for using the PCH EG20T as a PTP
99 clock. The hardware supports time stamping of PTP packets
100 when using the end-to-end delay (E2E) mechansim. The peer
101 delay mechansim (P2P) is not supported.
102
103 This clock is only useful if your PTP programs are getting
104 hardware time stamps on the PTP Ethernet packets using the
105 SO_TIMESTAMPING API.
106
107 To compile this driver as a module, choose M here: the module
108 will be called ptp_pch.
109
110config PTP_1588_CLOCK_KVM
111 tristate "KVM virtual PTP clock"
112 depends on PTP_1588_CLOCK
113 depends on KVM_GUEST && X86
114 default y
115 help
116 This driver adds support for using kvm infrastructure as a PTP
117 clock. This clock is only useful if you are using KVM guests.
118
119 To compile this driver as a module, choose M here: the module
120 will be called ptp_kvm.
121
122endmenu