1# 2# PTP clock support configuration 3# 4 5menu "PTP clock support" 6 7comment "Enable Device Drivers -> PPS to see the PTP clock options." 8 depends on PPS=n 9 10config 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 30config 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 43config PTP_1588_CLOCK_IXP46X 44 tristate "Intel IXP46x as PTP clock" 45 depends on PTP_1588_CLOCK 46 depends on IXP4XX_ETH 47 help 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. 52 53 To compile this driver as a module, choose M here: the module 54 will be called ptp_ixp46x. 55 56comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks." 57 depends on PTP_1588_CLOCK && (PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n) 58 59config DP83640_PHY 60 tristate "Driver for the National Semiconductor DP83640 PHYTER" 61 depends on PTP_1588_CLOCK 62 depends on NETWORK_PHY_TIMESTAMPING 63 depends on PHYLIB 64 ---help--- 65 Supports the DP83640 PHYTER with IEEE 1588 features. 66 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. 71 72 In order for this to work, your MAC driver must also 73 implement the skb_tx_timetamp() function. 74 75config PTP_1588_CLOCK_PCH 76 tristate "Intel PCH EG20T as PTP clock" 77 depends on PTP_1588_CLOCK 78 depends on PCH_GBE 79 help 80 This driver adds support for using the PCH EG20T as a PTP 81 clock. This clock is only useful if your PTP programs are 82 getting hardware time stamps on the PTP Ethernet packets 83 using the SO_TIMESTAMPING API. 84 85 To compile this driver as a module, choose M here: the module 86 will be called ptp_pch. 87 88endmenu 89