1# SPDX-License-Identifier: GPL-2.0-only 2# 3# PTP clock support configuration 4# 5 6menu "PTP clock support" 7 8config PTP_1588_CLOCK 9 tristate "PTP clock support" 10 depends on NET && POSIX_TIMERS 11 select PPS 12 select NET_PTP_CLASSIFY 13 help 14 The IEEE 1588 standard defines a method to precisely 15 synchronize distributed clocks over Ethernet networks. The 16 standard defines a Precision Time Protocol (PTP), which can 17 be used to achieve synchronization within a few dozen 18 microseconds. In addition, with the help of special hardware 19 time stamping units, it can be possible to achieve 20 synchronization to within a few hundred nanoseconds. 21 22 This driver adds support for PTP clocks as character 23 devices. If you want to use a PTP clock, then you should 24 also enable at least one clock driver as well. 25 26 To compile this driver as a module, choose M here: the module 27 will be called ptp. 28 29config PTP_1588_CLOCK_DTE 30 tristate "Broadcom DTE as PTP clock" 31 depends on PTP_1588_CLOCK 32 depends on NET && HAS_IOMEM 33 depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST 34 default y 35 help 36 This driver adds support for using the Digital timing engine 37 (DTE) in the Broadcom SoC's as a PTP clock. 38 39 The clock can be used in both wired and wireless networks 40 for PTP purposes. 41 42 To compile this driver as a module, choose M here: the module 43 will be called ptp_dte. 44 45config PTP_1588_CLOCK_QORIQ 46 tristate "Freescale QorIQ 1588 timer as PTP clock" 47 depends on GIANFAR || FSL_DPAA_ETH || FSL_ENETC || FSL_ENETC_VF 48 depends on PTP_1588_CLOCK 49 default y 50 help 51 This driver adds support for using the Freescale QorIQ 1588 52 timer as a PTP clock. This clock is only useful if your PTP 53 programs are getting hardware time stamps on the PTP Ethernet 54 packets using the SO_TIMESTAMPING API. 55 56 To compile this driver as a module, choose M here: the module 57 will be called ptp-qoriq. 58 59config PTP_1588_CLOCK_IXP46X 60 tristate "Intel IXP46x as PTP clock" 61 depends on IXP4XX_ETH 62 depends on PTP_1588_CLOCK 63 default y 64 help 65 This driver adds support for using the IXP46X as a PTP 66 clock. This clock is only useful if your PTP programs are 67 getting hardware time stamps on the PTP Ethernet packets 68 using the SO_TIMESTAMPING API. 69 70 To compile this driver as a module, choose M here: the module 71 will be called ptp_ixp46x. 72 73comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks." 74 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n 75 76config DP83640_PHY 77 tristate "Driver for the National Semiconductor DP83640 PHYTER" 78 depends on NETWORK_PHY_TIMESTAMPING 79 depends on PHYLIB 80 depends on PTP_1588_CLOCK 81 ---help--- 82 Supports the DP83640 PHYTER with IEEE 1588 features. 83 84 This driver adds support for using the DP83640 as a PTP 85 clock. This clock is only useful if your PTP programs are 86 getting hardware time stamps on the PTP Ethernet packets 87 using the SO_TIMESTAMPING API. 88 89 In order for this to work, your MAC driver must also 90 implement the skb_tx_timestamp() function. 91 92config PTP_1588_CLOCK_PCH 93 tristate "Intel PCH EG20T as PTP clock" 94 depends on X86_32 || COMPILE_TEST 95 depends on HAS_IOMEM && NET 96 imply PTP_1588_CLOCK 97 help 98 This driver adds support for using the PCH EG20T as a PTP 99 clock. The hardware supports time stamping of PTP packets 100 when using the end-to-end delay (E2E) mechansim. The peer 101 delay mechansim (P2P) is not supported. 102 103 This clock is only useful if your PTP programs are getting 104 hardware time stamps on the PTP Ethernet packets using the 105 SO_TIMESTAMPING API. 106 107 To compile this driver as a module, choose M here: the module 108 will be called ptp_pch. 109 110config PTP_1588_CLOCK_KVM 111 tristate "KVM virtual PTP clock" 112 depends on PTP_1588_CLOCK 113 depends on KVM_GUEST && X86 114 default y 115 help 116 This driver adds support for using kvm infrastructure as a PTP 117 clock. This clock is only useful if you are using KVM guests. 118 119 To compile this driver as a module, choose M here: the module 120 will be called ptp_kvm. 121 122endmenu 123