xref: /openbmc/linux/drivers/ptp/Kconfig (revision b34e08d5)
1#
2# PTP clock support configuration
3#
4
5menu "PTP clock support"
6
7config PTP_1588_CLOCK
8	tristate "PTP clock support"
9	select PPS
10	select NET_PTP_CLASSIFY
11	help
12	  The IEEE 1588 standard defines a method to precisely
13	  synchronize distributed clocks over Ethernet networks. The
14	  standard defines a Precision Time Protocol (PTP), which can
15	  be used to achieve synchronization within a few dozen
16	  microseconds. In addition, with the help of special hardware
17	  time stamping units, it can be possible to achieve
18	  synchronization to within a few hundred nanoseconds.
19
20	  This driver adds support for PTP clocks as character
21	  devices. If you want to use a PTP clock, then you should
22	  also enable at least one clock driver as well.
23
24	  To compile this driver as a module, choose M here: the module
25	  will be called ptp.
26
27config PTP_1588_CLOCK_GIANFAR
28	tristate "Freescale eTSEC as PTP clock"
29	depends on GIANFAR
30	select PTP_1588_CLOCK
31	default y
32	help
33	  This driver adds support for using the eTSEC as a PTP
34	  clock. This clock is only useful if your PTP programs are
35	  getting hardware time stamps on the PTP Ethernet packets
36	  using the SO_TIMESTAMPING API.
37
38	  To compile this driver as a module, choose M here: the module
39	  will be called gianfar_ptp.
40
41config PTP_1588_CLOCK_IXP46X
42	tristate "Intel IXP46x as PTP clock"
43	depends on IXP4XX_ETH
44	select PTP_1588_CLOCK
45	default y
46	help
47	  This driver adds support for using the IXP46X as a PTP
48	  clock. This clock is only useful if your PTP programs are
49	  getting hardware time stamps on the PTP Ethernet packets
50	  using the SO_TIMESTAMPING API.
51
52	  To compile this driver as a module, choose M here: the module
53	  will be called ptp_ixp46x.
54
55comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
56	depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
57
58config DP83640_PHY
59	tristate "Driver for the National Semiconductor DP83640 PHYTER"
60	depends on NETWORK_PHY_TIMESTAMPING
61	depends on PHYLIB
62	select PTP_1588_CLOCK
63	---help---
64	  Supports the DP83640 PHYTER with IEEE 1588 features.
65
66	  This driver adds support for using the DP83640 as a PTP
67	  clock. This clock is only useful if your PTP programs are
68	  getting hardware time stamps on the PTP Ethernet packets
69	  using the SO_TIMESTAMPING API.
70
71	  In order for this to work, your MAC driver must also
72	  implement the skb_tx_timestamp() function.
73
74config PTP_1588_CLOCK_PCH
75	tristate "Intel PCH EG20T as PTP clock"
76	depends on X86 || COMPILE_TEST
77	depends on HAS_IOMEM
78	select PTP_1588_CLOCK
79	help
80	  This driver adds support for using the PCH EG20T as a PTP
81	  clock. The hardware supports time stamping of PTP packets
82	  when using the end-to-end delay (E2E) mechansim. The peer
83	  delay mechansim (P2P) is not supported.
84
85	  This clock is only useful if your PTP programs are getting
86	  hardware time stamps on the PTP Ethernet packets using the
87	  SO_TIMESTAMPING API.
88
89	  To compile this driver as a module, choose M here: the module
90	  will be called ptp_pch.
91
92endmenu
93