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 MIPS_GENERIC || X86_32 || COMPILE_TEST 106 depends on HAS_IOMEM && PCI 107 depends on NET 108 depends on PTP_1588_CLOCK 109 help 110 This driver adds support for using the PCH EG20T as a PTP 111 clock. The hardware supports time stamping of PTP packets 112 when using the end-to-end delay (E2E) mechanism. The peer 113 delay mechanism (P2P) is not supported. 114 115 This clock is only useful if your PTP programs are getting 116 hardware time stamps on the PTP Ethernet packets using the 117 SO_TIMESTAMPING API. 118 119 To compile this driver as a module, choose M here: the module 120 will be called ptp_pch. 121 122config PTP_1588_CLOCK_KVM 123 tristate "KVM virtual PTP clock" 124 depends on PTP_1588_CLOCK 125 depends on (KVM_GUEST && X86) || (HAVE_ARM_SMCCC_DISCOVERY && ARM_ARCH_TIMER) 126 default y 127 help 128 This driver adds support for using kvm infrastructure as a PTP 129 clock. This clock is only useful if you are using KVM guests. 130 131 To compile this driver as a module, choose M here: the module 132 will be called ptp_kvm. 133 134config PTP_1588_CLOCK_IDT82P33 135 tristate "IDT 82P33xxx PTP clock" 136 depends on PTP_1588_CLOCK && I2C 137 default n 138 help 139 This driver adds support for using the IDT 82P33xxx as a PTP 140 clock. This clock is only useful if your time stamping MAC 141 is connected to the IDT chip. 142 143 To compile this driver as a module, choose M here: the module 144 will be called ptp_idt82p33. 145 146config PTP_1588_CLOCK_IDTCM 147 tristate "IDT CLOCKMATRIX as PTP clock" 148 depends on PTP_1588_CLOCK && I2C 149 default n 150 help 151 This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP 152 clock. This clock is only useful if your time stamping MAC 153 is connected to the IDT chip. 154 155 To compile this driver as a module, choose M here: the module 156 will be called ptp_clockmatrix. 157 158config PTP_1588_CLOCK_VMW 159 tristate "VMware virtual PTP clock" 160 depends on ACPI && HYPERVISOR_GUEST && X86 161 depends on PTP_1588_CLOCK 162 help 163 This driver adds support for using VMware virtual precision 164 clock device as a PTP clock. This is only useful in virtual 165 machines running on VMware virtual infrastructure. 166 167 To compile this driver as a module, choose M here: the module 168 will be called ptp_vmw. 169 170config PTP_1588_CLOCK_OCP 171 tristate "OpenCompute TimeCard as PTP clock" 172 depends on PTP_1588_CLOCK 173 depends on HAS_IOMEM && PCI 174 depends on I2C && MTD 175 depends on SERIAL_8250 176 depends on !S390 177 depends on COMMON_CLK 178 select NET_DEVLINK 179 select CRC16 180 help 181 This driver adds support for an OpenCompute time card. 182 183 The OpenCompute time card is an atomic clock along with 184 a GPS receiver that provides a Grandmaster clock source 185 for a PTP enabled network. 186 187 More information is available at http://www.timingcard.com/ 188 189config PTP_DFL_TOD 190 tristate "FPGA DFL ToD Driver" 191 depends on FPGA_DFL 192 depends on PTP_1588_CLOCK 193 help 194 The DFL (Device Feature List) device driver for the Intel ToD 195 (Time-of-Day) device in FPGA card. The ToD IP within the FPGA 196 is exposed as PTP Hardware Clock (PHC) device to the Linux PTP 197 stack to synchronize the system clock to its ToD information 198 using phc2sys utility of the Linux PTP stack. 199 200 To compile this driver as a module, choose M here: the module 201 will be called ptp_dfl_tod. 202 203endmenu 204