| Richard Cochran | d94ba80 | 2011-04-22 12:03:08 +0200 | [diff] [blame] | 1 | # |
| 2 | # PTP clock support configuration |
| 3 | # |
| 4 | |
| 5 | menu "PTP clock support" |
| 6 | |
| 7 | comment "Enable Device Drivers -> PPS to see the PTP clock options." |
| 8 | depends on PPS=n |
| 9 | |
| 10 | config PTP_1588_CLOCK |
| 11 | tristate "PTP clock support" |
| 12 | depends on EXPERIMENTAL |
| 13 | depends on PPS |
| 14 | help |
| 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. |
| 22 | |
| 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. |
| 26 | |
| 27 | To compile this driver as a module, choose M here: the module |
| 28 | will be called ptp. |
| 29 | |
| Richard Cochran | c78275f | 2011-04-22 12:03:54 +0200 | [diff] [blame^] | 30 | config PTP_1588_CLOCK_GIANFAR |
| 31 | tristate "Freescale eTSEC as PTP clock" |
| 32 | depends on PTP_1588_CLOCK |
| 33 | depends on GIANFAR |
| 34 | help |
| 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. |
| 39 | |
| 40 | To compile this driver as a module, choose M here: the module |
| 41 | will be called gianfar_ptp. |
| 42 | |
| Richard Cochran | d94ba80 | 2011-04-22 12:03:08 +0200 | [diff] [blame] | 43 | endmenu |