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_timestamp() 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. 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. 84 85 This clock is only useful if your PTP programs are getting 86 hardware time stamps on the PTP Ethernet packets using the 87 SO_TIMESTAMPING API. 88 89 To compile this driver as a module, choose M here: the module 90 will be called ptp_pch. 91 92endmenu 93