xref: /openbmc/linux/drivers/ptp/Kconfig (revision ba61bb17)
1#
2# PTP clock support configuration
3#
4
5menu "PTP clock support"
6
7config PTP_1588_CLOCK
8	tristate "PTP clock support"
9	depends on NET && POSIX_TIMERS
10	select PPS
11	select NET_PTP_CLASSIFY
12	help
13	  The IEEE 1588 standard defines a method to precisely
14	  synchronize distributed clocks over Ethernet networks. The
15	  standard defines a Precision Time Protocol (PTP), which can
16	  be used to achieve synchronization within a few dozen
17	  microseconds. In addition, with the help of special hardware
18	  time stamping units, it can be possible to achieve
19	  synchronization to within a few hundred nanoseconds.
20
21	  This driver adds support for PTP clocks as character
22	  devices. If you want to use a PTP clock, then you should
23	  also enable at least one clock driver as well.
24
25	  To compile this driver as a module, choose M here: the module
26	  will be called ptp.
27
28config PTP_1588_CLOCK_DTE
29	tristate "Broadcom DTE as PTP clock"
30	depends on PTP_1588_CLOCK
31	depends on NET && HAS_IOMEM
32	depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
33	default y
34	help
35	  This driver adds support for using the Digital timing engine
36	  (DTE) in the Broadcom SoC's as a PTP clock.
37
38	  The clock can be used in both wired and wireless networks
39	  for PTP purposes.
40
41	  To compile this driver as a module, choose M here: the module
42	  will be called ptp_dte.
43
44config PTP_1588_CLOCK_QORIQ
45	tristate "Freescale QorIQ 1588 timer as PTP clock"
46	depends on GIANFAR
47	depends on PTP_1588_CLOCK
48	default y
49	help
50	  This driver adds support for using the Freescale QorIQ 1588
51	  timer as a PTP clock. This clock is only useful if your PTP
52	  programs are getting hardware time stamps on the PTP Ethernet
53	  packets using the SO_TIMESTAMPING API.
54
55	  To compile this driver as a module, choose M here: the module
56	  will be called ptp_qoriq.
57
58config PTP_1588_CLOCK_IXP46X
59	tristate "Intel IXP46x as PTP clock"
60	depends on IXP4XX_ETH
61	depends on PTP_1588_CLOCK
62	default y
63	help
64	  This driver adds support for using the IXP46X as a PTP
65	  clock. This clock is only useful if your PTP programs are
66	  getting hardware time stamps on the PTP Ethernet packets
67	  using the SO_TIMESTAMPING API.
68
69	  To compile this driver as a module, choose M here: the module
70	  will be called ptp_ixp46x.
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	---help---
81	  Supports the DP83640 PHYTER with IEEE 1588 features.
82
83	  This driver adds support for using the DP83640 as a PTP
84	  clock. This clock is only useful if your PTP programs are
85	  getting hardware time stamps on the PTP Ethernet packets
86	  using the SO_TIMESTAMPING API.
87
88	  In order for this to work, your MAC driver must also
89	  implement the skb_tx_timestamp() function.
90
91config PTP_1588_CLOCK_PCH
92	tristate "Intel PCH EG20T as PTP clock"
93	depends on X86_32 || COMPILE_TEST
94	depends on HAS_IOMEM && NET
95	imply PTP_1588_CLOCK
96	help
97	  This driver adds support for using the PCH EG20T as a PTP
98	  clock. The hardware supports time stamping of PTP packets
99	  when using the end-to-end delay (E2E) mechansim. The peer
100	  delay mechansim (P2P) is not supported.
101
102	  This clock is only useful if your PTP programs are getting
103	  hardware time stamps on the PTP Ethernet packets using the
104	  SO_TIMESTAMPING API.
105
106	  To compile this driver as a module, choose M here: the module
107	  will be called ptp_pch.
108
109config PTP_1588_CLOCK_KVM
110	tristate "KVM virtual PTP clock"
111	depends on PTP_1588_CLOCK
112	depends on KVM_GUEST && X86
113	default y
114	help
115	  This driver adds support for using kvm infrastructure as a PTP
116	  clock. This clock is only useful if you are using KVM guests.
117
118	  To compile this driver as a module, choose M here: the module
119	  will be called ptp_kvm.
120
121endmenu
122