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 select CRC32 68 help 69 Supports the DP83640 PHYTER with IEEE 1588 features. 70 71 This driver adds support for using the DP83640 as a PTP 72 clock. This clock is only useful if your PTP programs are 73 getting hardware time stamps on the PTP Ethernet packets 74 using the SO_TIMESTAMPING API. 75 76 In order for this to work, your MAC driver must also 77 implement the skb_tx_timestamp() function. 78 79config PTP_1588_CLOCK_INES 80 tristate "ZHAW InES PTP time stamping IP core" 81 depends on NETWORK_PHY_TIMESTAMPING 82 depends on HAS_IOMEM 83 depends on PHYLIB 84 depends on PTP_1588_CLOCK 85 help 86 This driver adds support for using the ZHAW InES 1588 IP 87 core. This clock is only useful if the MII bus of your MAC 88 is wired up to the core. 89 90config PTP_1588_CLOCK_PCH 91 tristate "Intel PCH EG20T as PTP clock" 92 depends on X86_32 || COMPILE_TEST 93 depends on HAS_IOMEM && NET 94 imply PTP_1588_CLOCK 95 help 96 This driver adds support for using the PCH EG20T as a PTP 97 clock. The hardware supports time stamping of PTP packets 98 when using the end-to-end delay (E2E) mechanism. The peer 99 delay mechanism (P2P) is not supported. 100 101 This clock is only useful if your PTP programs are getting 102 hardware time stamps on the PTP Ethernet packets using the 103 SO_TIMESTAMPING API. 104 105 To compile this driver as a module, choose M here: the module 106 will be called ptp_pch. 107 108config PTP_1588_CLOCK_KVM 109 tristate "KVM virtual PTP clock" 110 depends on PTP_1588_CLOCK 111 depends on (KVM_GUEST && X86) || (HAVE_ARM_SMCCC_DISCOVERY && ARM_ARCH_TIMER) 112 default y 113 help 114 This driver adds support for using kvm infrastructure as a PTP 115 clock. This clock is only useful if you are using KVM guests. 116 117 To compile this driver as a module, choose M here: the module 118 will be called ptp_kvm. 119 120config PTP_1588_CLOCK_IDT82P33 121 tristate "IDT 82P33xxx PTP clock" 122 depends on PTP_1588_CLOCK && I2C 123 default n 124 help 125 This driver adds support for using the IDT 82P33xxx as a PTP 126 clock. This clock is only useful if your time stamping MAC 127 is connected to the IDT chip. 128 129 To compile this driver as a module, choose M here: the module 130 will be called ptp_idt82p33. 131 132config PTP_1588_CLOCK_IDTCM 133 tristate "IDT CLOCKMATRIX as PTP clock" 134 depends on PTP_1588_CLOCK && I2C 135 default n 136 help 137 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP 138 clock. This clock is only useful if your time stamping MAC 139 is connected to the IDT chip. 140 141 To compile this driver as a module, choose M here: the module 142 will be called ptp_clockmatrix. 143 144config PTP_1588_CLOCK_VMW 145 tristate "VMware virtual PTP clock" 146 depends on ACPI && HYPERVISOR_GUEST && X86 147 depends on PTP_1588_CLOCK 148 help 149 This driver adds support for using VMware virtual precision 150 clock device as a PTP clock. This is only useful in virtual 151 machines running on VMware virtual infrastructure. 152 153 To compile this driver as a module, choose M here: the module 154 will be called ptp_vmw. 155 156config PTP_1588_CLOCK_OCP 157 tristate "OpenCompute TimeCard as PTP clock" 158 depends on PTP_1588_CLOCK 159 depends on HAS_IOMEM && PCI 160 default n 161 help 162 This driver adds support for an OpenCompute time card. 163 164 The OpenCompute time card is an atomic clock along with 165 a GPS receiver that provides a Grandmaster clock source 166 for a PTP enabled network. 167 168 More information is available at http://www.timingcard.com/ 169 170endmenu 171