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 default ETHERNET 12 select PPS 13 select NET_PTP_CLASSIFY 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_OPTIONAL 31 tristate 32 default y if PTP_1588_CLOCK=n 33 default PTP_1588_CLOCK 34 help 35 Drivers that can optionally use the PTP_1588_CLOCK framework 36 should depend on this symbol to prevent them from being built 37 into vmlinux while the PTP support itself is in a loadable 38 module. 39 If PTP support is disabled, this dependency will still be 40 met, and drivers refer to dummy helpers. 41 42config PTP_1588_CLOCK_DTE 43 tristate "Broadcom DTE as PTP clock" 44 depends on PTP_1588_CLOCK 45 depends on NET && HAS_IOMEM 46 depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST 47 default y 48 help 49 This driver adds support for using the Digital timing engine 50 (DTE) in the Broadcom SoC's as a PTP clock. 51 52 The clock can be used in both wired and wireless networks 53 for PTP purposes. 54 55 To compile this driver as a module, choose M here: the module 56 will be called ptp_dte. 57 58config PTP_1588_CLOCK_QORIQ 59 tristate "Freescale QorIQ 1588 timer as PTP clock" 60 depends on GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST 61 depends on PTP_1588_CLOCK 62 default y 63 help 64 This driver adds support for using the Freescale QorIQ 1588 65 timer as a PTP clock. This clock is only useful if your PTP 66 programs are getting hardware time stamps on the PTP Ethernet 67 packets using the SO_TIMESTAMPING API. 68 69 To compile this driver as a module, choose M here: the module 70 will be called ptp-qoriq. 71 72comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks." 73 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n 74 75config DP83640_PHY 76 tristate "Driver for the National Semiconductor DP83640 PHYTER" 77 depends on NETWORK_PHY_TIMESTAMPING 78 depends on PHYLIB 79 depends on PTP_1588_CLOCK 80 select CRC32 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_INES 93 tristate "ZHAW InES PTP time stamping IP core" 94 depends on NETWORK_PHY_TIMESTAMPING 95 depends on HAS_IOMEM 96 depends on PHYLIB 97 depends on PTP_1588_CLOCK 98 help 99 This driver adds support for using the ZHAW InES 1588 IP 100 core. This clock is only useful if the MII bus of your MAC 101 is wired up to the core. 102 103config PTP_1588_CLOCK_PCH 104 tristate "Intel PCH EG20T as PTP clock" 105 depends on X86_32 || COMPILE_TEST 106 depends on HAS_IOMEM && NET 107 depends on PTP_1588_CLOCK 108 help 109 This driver adds support for using the PCH EG20T as a PTP 110 clock. The hardware supports time stamping of PTP packets 111 when using the end-to-end delay (E2E) mechanism. The peer 112 delay mechanism (P2P) is not supported. 113 114 This clock is only useful if your PTP programs are getting 115 hardware time stamps on the PTP Ethernet packets using the 116 SO_TIMESTAMPING API. 117 118 To compile this driver as a module, choose M here: the module 119 will be called ptp_pch. 120 121config PTP_1588_CLOCK_KVM 122 tristate "KVM virtual PTP clock" 123 depends on PTP_1588_CLOCK 124 depends on (KVM_GUEST && X86) || (HAVE_ARM_SMCCC_DISCOVERY && ARM_ARCH_TIMER) 125 default y 126 help 127 This driver adds support for using kvm infrastructure as a PTP 128 clock. This clock is only useful if you are using KVM guests. 129 130 To compile this driver as a module, choose M here: the module 131 will be called ptp_kvm. 132 133config PTP_1588_CLOCK_IDT82P33 134 tristate "IDT 82P33xxx PTP clock" 135 depends on PTP_1588_CLOCK && I2C 136 default n 137 help 138 This driver adds support for using the IDT 82P33xxx as a PTP 139 clock. This clock is only useful if your time stamping MAC 140 is connected to the IDT chip. 141 142 To compile this driver as a module, choose M here: the module 143 will be called ptp_idt82p33. 144 145config PTP_1588_CLOCK_IDTCM 146 tristate "IDT CLOCKMATRIX as PTP clock" 147 depends on PTP_1588_CLOCK && I2C 148 default n 149 help 150 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP 151 clock. This clock is only useful if your time stamping MAC 152 is connected to the IDT chip. 153 154 To compile this driver as a module, choose M here: the module 155 will be called ptp_clockmatrix. 156 157config PTP_1588_CLOCK_VMW 158 tristate "VMware virtual PTP clock" 159 depends on ACPI && HYPERVISOR_GUEST && X86 160 depends on PTP_1588_CLOCK 161 help 162 This driver adds support for using VMware virtual precision 163 clock device as a PTP clock. This is only useful in virtual 164 machines running on VMware virtual infrastructure. 165 166 To compile this driver as a module, choose M here: the module 167 will be called ptp_vmw. 168 169config PTP_1588_CLOCK_OCP 170 tristate "OpenCompute TimeCard as PTP clock" 171 depends on PTP_1588_CLOCK 172 depends on HAS_IOMEM && PCI 173 depends on SPI && I2C && MTD 174 imply SPI_MEM 175 imply SPI_XILINX 176 imply MTD_SPI_NOR 177 imply I2C_XILINX 178 select SERIAL_8250 179 180 default n 181 help 182 This driver adds support for an OpenCompute time card. 183 184 The OpenCompute time card is an atomic clock along with 185 a GPS receiver that provides a Grandmaster clock source 186 for a PTP enabled network. 187 188 More information is available at http://www.timingcard.com/ 189 190endmenu 191