Root/drivers/ptp/Kconfig

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

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