2 # PTP clock support configuration
5 menu "PTP clock support"
8 tristate "PTP clock support"
11 select NET_PTP_CLASSIFY
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.
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.
25 To compile this driver as a module, choose M here: the module
28 config PTP_1588_CLOCK_GIANFAR
29 tristate "Freescale eTSEC as PTP clock"
34 This driver adds support for using the eTSEC as a PTP
35 clock. This clock is only useful if your PTP programs are
36 getting hardware time stamps on the PTP Ethernet packets
37 using the SO_TIMESTAMPING API.
39 To compile this driver as a module, choose M here: the module
40 will be called gianfar_ptp.
42 config PTP_1588_CLOCK_IXP46X
43 tristate "Intel IXP46x as PTP clock"
48 This driver adds support for using the IXP46X as a PTP
49 clock. This clock is only useful if your PTP programs are
50 getting hardware time stamps on the PTP Ethernet packets
51 using the SO_TIMESTAMPING API.
53 To compile this driver as a module, choose M here: the module
54 will be called ptp_ixp46x.
56 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
57 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
60 tristate "Driver for the National Semiconductor DP83640 PHYTER"
61 depends on NETWORK_PHY_TIMESTAMPING
65 Supports the DP83640 PHYTER with IEEE 1588 features.
67 This driver adds support for using the DP83640 as a PTP
68 clock. This clock is only useful if your PTP programs are
69 getting hardware time stamps on the PTP Ethernet packets
70 using the SO_TIMESTAMPING API.
72 In order for this to work, your MAC driver must also
73 implement the skb_tx_timestamp() function.
75 config PTP_1588_CLOCK_PCH
76 tristate "Intel PCH EG20T as PTP clock"
77 depends on X86_32 || COMPILE_TEST
78 depends on HAS_IOMEM && NET
81 This driver adds support for using the PCH EG20T as a PTP
82 clock. The hardware supports time stamping of PTP packets
83 when using the end-to-end delay (E2E) mechansim. The peer
84 delay mechansim (P2P) is not supported.
86 This clock is only useful if your PTP programs are getting
87 hardware time stamps on the PTP Ethernet packets using the
90 To compile this driver as a module, choose M here: the module
91 will be called ptp_pch.