2 # PTP clock support configuration
5 menu "PTP clock support"
8 tristate "PTP clock support"
10 select NET_PTP_CLASSIFY
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.
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.
24 To compile this driver as a module, choose M here: the module
27 config PTP_1588_CLOCK_GIANFAR
28 tristate "Freescale eTSEC as PTP clock"
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.
38 To compile this driver as a module, choose M here: the module
39 will be called gianfar_ptp.
41 config PTP_1588_CLOCK_IXP46X
42 tristate "Intel IXP46x as PTP clock"
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.
52 To compile this driver as a module, choose M here: the module
53 will be called ptp_ixp46x.
55 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
56 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
59 tristate "Driver for the National Semiconductor DP83640 PHYTER"
60 depends on NETWORK_PHY_TIMESTAMPING
64 Supports the DP83640 PHYTER with IEEE 1588 features.
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.
71 In order for this to work, your MAC driver must also
72 implement the skb_tx_timestamp() function.
74 config PTP_1588_CLOCK_PCH
75 tristate "Intel PCH EG20T as PTP clock"
76 depends on X86 || COMPILE_TEST
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.
85 This clock is only useful if your PTP programs are getting
86 hardware time stamps on the PTP Ethernet packets using the
89 To compile this driver as a module, choose M here: the module
90 will be called ptp_pch.