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 && 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	help
180	  This driver adds support for an OpenCompute time card.
181
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.
185
186	  More information is available at http://www.timingcard.com/
187
188endmenu
189