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_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST 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 59comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks." 60 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n 61 62config DP83640_PHY 63 tristate "Driver for the National Semiconductor DP83640 PHYTER" 64 depends on NETWORK_PHY_TIMESTAMPING 65 depends on PHYLIB 66 depends on PTP_1588_CLOCK 67 ---help--- 68 Supports the DP83640 PHYTER with IEEE 1588 features. 69 70 This driver adds support for using the DP83640 as a PTP 71 clock. This clock is only useful if your PTP programs are 72 getting hardware time stamps on the PTP Ethernet packets 73 using the SO_TIMESTAMPING API. 74 75 In order for this to work, your MAC driver must also 76 implement the skb_tx_timestamp() function. 77 78config PTP_1588_CLOCK_INES 79 tristate "ZHAW InES PTP time stamping IP core" 80 depends on NETWORK_PHY_TIMESTAMPING 81 depends on PHYLIB 82 depends on PTP_1588_CLOCK 83 help 84 This driver adds support for using the ZHAW InES 1588 IP 85 core. This clock is only useful if the MII bus of your MAC 86 is wired up to the core. 87 88config PTP_1588_CLOCK_PCH 89 tristate "Intel PCH EG20T as PTP clock" 90 depends on X86_32 || COMPILE_TEST 91 depends on HAS_IOMEM && NET 92 imply PTP_1588_CLOCK 93 help 94 This driver adds support for using the PCH EG20T as a PTP 95 clock. The hardware supports time stamping of PTP packets 96 when using the end-to-end delay (E2E) mechanism. The peer 97 delay mechanism (P2P) is not supported. 98 99 This clock is only useful if your PTP programs are getting 100 hardware time stamps on the PTP Ethernet packets using the 101 SO_TIMESTAMPING API. 102 103 To compile this driver as a module, choose M here: the module 104 will be called ptp_pch. 105 106config PTP_1588_CLOCK_KVM 107 tristate "KVM virtual PTP clock" 108 depends on PTP_1588_CLOCK 109 depends on KVM_GUEST && X86 110 default y 111 help 112 This driver adds support for using kvm infrastructure as a PTP 113 clock. This clock is only useful if you are using KVM guests. 114 115 To compile this driver as a module, choose M here: the module 116 will be called ptp_kvm. 117 118config PTP_1588_CLOCK_IDTCM 119 tristate "IDT CLOCKMATRIX as PTP clock" 120 depends on PTP_1588_CLOCK && I2C 121 default n 122 help 123 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP 124 clock. This clock is only useful if your time stamping MAC 125 is connected to the IDT chip. 126 127 To compile this driver as a module, choose M here: the module 128 will be called ptp_clockmatrix. 129 130endmenu 131