2 # PTP clock support configuration
5 menu "PTP clock support"
7 comment "Enable Device Drivers -> PPS to see the PTP clock options."
11 tristate "PTP clock support"
12 depends on EXPERIMENTAL
15 The IEEE 1588 standard defines a method to precisely
16 synchronize distributed clocks over Ethernet networks. The
17 standard defines a Precision Time Protocol (PTP), which can
18 be used to achieve synchronization within a few dozen
19 microseconds. In addition, with the help of special hardware
20 time stamping units, it can be possible to achieve
21 synchronization to within a few hundred nanoseconds.
23 This driver adds support for PTP clocks as character
24 devices. If you want to use a PTP clock, then you should
25 also enable at least one clock driver as well.
27 To compile this driver as a module, choose M here: the module
30 config PTP_1588_CLOCK_GIANFAR
31 tristate "Freescale eTSEC as PTP clock"
32 depends on PTP_1588_CLOCK
35 This driver adds support for using the eTSEC as a PTP
36 clock. This clock is only useful if your PTP programs are
37 getting hardware time stamps on the PTP Ethernet packets
38 using the SO_TIMESTAMPING API.
40 To compile this driver as a module, choose M here: the module
41 will be called gianfar_ptp.
43 config PTP_1588_CLOCK_IXP46X
44 tristate "Intel IXP46x as PTP clock"
45 depends on PTP_1588_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 PTP_1588_CLOCK && (PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n)
60 tristate "Driver for the National Semiconductor DP83640 PHYTER"
61 depends on PTP_1588_CLOCK
62 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 PTP_1588_CLOCK
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.