summaryrefslogtreecommitdiffstats
path: root/drivers/ptp/Kconfig
blob: fcfafd091fdddaf5ae6b8123ae7d4353aff10dd1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
#
# PTP clock support configuration
#

menu "PTP clock support"

comment "Enable Device Drivers -> PPS to see the PTP clock options."
	depends on PPS=n

config PTP_1588_CLOCK
	tristate "PTP clock support"
	depends on EXPERIMENTAL
	depends on PPS
	help
	  The IEEE 1588 standard defines a method to precisely
	  synchronize distributed clocks over Ethernet networks. The
	  standard defines a Precision Time Protocol (PTP), which can
	  be used to achieve synchronization within a few dozen
	  microseconds. In addition, with the help of special hardware
	  time stamping units, it can be possible to achieve
	  synchronization to within a few hundred nanoseconds.

	  This driver adds support for PTP clocks as character
	  devices. If you want to use a PTP clock, then you should
	  also enable at least one clock driver as well.

	  To compile this driver as a module, choose M here: the module
	  will be called ptp.

config PTP_1588_CLOCK_GIANFAR
	tristate "Freescale eTSEC as PTP clock"
	depends on PTP_1588_CLOCK
	depends on GIANFAR
	help
	  This driver adds support for using the eTSEC as a PTP
	  clock. This clock is only useful if your PTP programs are
	  getting hardware time stamps on the PTP Ethernet packets
	  using the SO_TIMESTAMPING API.

	  To compile this driver as a module, choose M here: the module
	  will be called gianfar_ptp.

config PTP_1588_CLOCK_IXP46X
	tristate "Intel IXP46x as PTP clock"
	depends on PTP_1588_CLOCK
	depends on IXP4XX_ETH
	help
	  This driver adds support for using the IXP46X as a PTP
	  clock. This clock is only useful if your PTP programs are
	  getting hardware time stamps on the PTP Ethernet packets
	  using the SO_TIMESTAMPING API.

	  To compile this driver as a module, choose M here: the module
	  will be called ptp_ixp46x.

endmenu