1# 2# PTP clock support configuration 3# 4 5menu "PTP clock support" 6 7config PTP_1588_CLOCK 8 tristate "PTP clock support" 9 depends on NET 10 select PPS 11 select NET_PTP_CLASSIFY 12 help 13 The IEEE 1588 standard defines a method to precisely 14 synchronize distributed clocks over Ethernet networks. The 15 standard defines a Precision Time Protocol (PTP), which can 16 be used to achieve synchronization within a few dozen 17 microseconds. In addition, with the help of special hardware 18 time stamping units, it can be possible to achieve 19 synchronization to within a few hundred nanoseconds. 20 21 This driver adds support for PTP clocks as character 22 devices. If you want to use a PTP clock, then you should 23 also enable at least one clock driver as well. 24 25 To compile this driver as a module, choose M here: the module 26 will be called ptp. 27 28config PTP_1588_CLOCK_GIANFAR 29 tristate "Freescale eTSEC as PTP clock" 30 depends on GIANFAR 31 select PTP_1588_CLOCK 32 default y 33 help 34 This driver adds support for using the eTSEC as a PTP 35 clock. This clock is only useful if your PTP programs are 36 getting hardware time stamps on the PTP Ethernet packets 37 using the SO_TIMESTAMPING API. 38 39 To compile this driver as a module, choose M here: the module 40 will be called gianfar_ptp. 41 42config PTP_1588_CLOCK_IXP46X 43 tristate "Intel IXP46x as PTP clock" 44 depends on IXP4XX_ETH 45 select PTP_1588_CLOCK 46 default y 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 PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n 58 59config DP83640_PHY 60 tristate "Driver for the National Semiconductor DP83640 PHYTER" 61 depends on NETWORK_PHY_TIMESTAMPING 62 depends on PHYLIB 63 select PTP_1588_CLOCK 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 X86_32 || COMPILE_TEST 78 depends on HAS_IOMEM && NET 79 select PTP_1588_CLOCK 80 help 81 This driver adds support for using the PCH EG20T as a PTP 82 clock. The hardware supports time stamping of PTP packets 83 when using the end-to-end delay (E2E) mechansim. The peer 84 delay mechansim (P2P) is not supported. 85 86 This clock is only useful if your PTP programs are getting 87 hardware time stamps on the PTP Ethernet packets using the 88 SO_TIMESTAMPING API. 89 90 To compile this driver as a module, choose M here: the module 91 will be called ptp_pch. 92 93endmenu 94