1 # SPDX-License-Identifier: GPL-2.0-only
3 # PTP clock support configuration
6 menu "PTP clock support"
9 tristate "PTP clock support"
10 depends on NET && POSIX_TIMERS
13 select NET_PTP_CLASSIFY
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.
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.
27 To compile this driver as a module, choose M here: the module
30 config PTP_1588_CLOCK_OPTIONAL
32 default y if PTP_1588_CLOCK=n
33 default PTP_1588_CLOCK
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
39 If PTP support is disabled, this dependency will still be
40 met, and drivers refer to dummy helpers.
42 config 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
49 This driver adds support for using the Digital timing engine
50 (DTE) in the Broadcom SoC's as a PTP clock.
52 The clock can be used in both wired and wireless networks
55 To compile this driver as a module, choose M here: the module
56 will be called ptp_dte.
58 config 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
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.
69 To compile this driver as a module, choose M here: the module
70 will be called ptp-qoriq.
72 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
73 depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
76 tristate "Driver for the National Semiconductor DP83640 PHYTER"
77 depends on NETWORK_PHY_TIMESTAMPING
79 depends on PTP_1588_CLOCK
82 Supports the DP83640 PHYTER with IEEE 1588 features.
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.
89 In order for this to work, your MAC driver must also
90 implement the skb_tx_timestamp() function.
92 config PTP_1588_CLOCK_INES
93 tristate "ZHAW InES PTP time stamping IP core"
94 depends on NETWORK_PHY_TIMESTAMPING
97 depends on PTP_1588_CLOCK
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.
103 config PTP_1588_CLOCK_PCH
104 tristate "Intel PCH EG20T as PTP clock"
105 depends on X86_32 || COMPILE_TEST
106 depends on HAS_IOMEM && PCI
108 depends on PTP_1588_CLOCK
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.
115 This clock is only useful if your PTP programs are getting
116 hardware time stamps on the PTP Ethernet packets using the
119 To compile this driver as a module, choose M here: the module
120 will be called ptp_pch.
122 config 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)
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.
131 To compile this driver as a module, choose M here: the module
132 will be called ptp_kvm.
134 config PTP_1588_CLOCK_IDT82P33
135 tristate "IDT 82P33xxx PTP clock"
136 depends on PTP_1588_CLOCK && I2C
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.
143 To compile this driver as a module, choose M here: the module
144 will be called ptp_idt82p33.
146 config PTP_1588_CLOCK_IDTCM
147 tristate "IDT CLOCKMATRIX as PTP clock"
148 depends on PTP_1588_CLOCK && I2C
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.
155 To compile this driver as a module, choose M here: the module
156 will be called ptp_clockmatrix.
158 config PTP_1588_CLOCK_VMW
159 tristate "VMware virtual PTP clock"
160 depends on ACPI && HYPERVISOR_GUEST && X86
161 depends on PTP_1588_CLOCK
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.
167 To compile this driver as a module, choose M here: the module
168 will be called ptp_vmw.
170 config 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
177 depends on COMMON_CLK
180 This driver adds support for an OpenCompute time card.
182 The OpenCompute time card is an atomic clock along with
183 a GPS receiver that provides a Grandmaster clock source
184 for a PTP enabled network.
186 More information is available at http://www.timingcard.com/