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Directory : /lib/modules/5.15.0-1083-aws/build/drivers/ptp/

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Current File : /lib/modules/5.15.0-1083-aws/build/drivers/ptp/Kconfig

# SPDX-License-Identifier: GPL-2.0-only
#
# PTP clock support configuration
#

menu "PTP clock support"

config PTP_1588_CLOCK
tristate "PTP clock support"
depends on NET && POSIX_TIMERS
default ETHERNET
select PPS
select NET_PTP_CLASSIFY
help
The IEEE 1588 standard defines a method to precisely
synchronize distributed clocks over Ethernet networks. The
standard defines a Precision Time Protocol (PTP), which can
be used to achieve synchronization within a few dozen
microseconds. In addition, with the help of special hardware
time stamping units, it can be possible to achieve
synchronization to within a few hundred nanoseconds.

This driver adds support for PTP clocks as character
devices. If you want to use a PTP clock, then you should
also enable at least one clock driver as well.

To compile this driver as a module, choose M here: the module
will be called ptp.

config PTP_1588_CLOCK_OPTIONAL
tristate
default y if PTP_1588_CLOCK=n
default PTP_1588_CLOCK
help
Drivers that can optionally use the PTP_1588_CLOCK framework
should depend on this symbol to prevent them from being built
into vmlinux while the PTP support itself is in a loadable
module.
If PTP support is disabled, this dependency will still be
met, and drivers refer to dummy helpers.

config PTP_1588_CLOCK_DTE
tristate "Broadcom DTE as PTP clock"
depends on PTP_1588_CLOCK
depends on NET && HAS_IOMEM
depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
default y
help
This driver adds support for using the Digital timing engine
(DTE) in the Broadcom SoC's as a PTP clock.

The clock can be used in both wired and wireless networks
for PTP purposes.

To compile this driver as a module, choose M here: the module
will be called ptp_dte.

config PTP_1588_CLOCK_QORIQ
tristate "Freescale QorIQ 1588 timer as PTP clock"
depends on GIANFAR || FSL_DPAA_ETH || FSL_DPAA2_ETH || FSL_ENETC || FSL_ENETC_VF || COMPILE_TEST
depends on PTP_1588_CLOCK
default y
help
This driver adds support for using the Freescale QorIQ 1588
timer as a PTP clock. This clock is only useful if your PTP
programs are getting hardware time stamps on the PTP Ethernet
packets using the SO_TIMESTAMPING API.

To compile this driver as a module, choose M here: the module
will be called ptp-qoriq.

comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n

config DP83640_PHY
tristate "Driver for the National Semiconductor DP83640 PHYTER"
depends on NETWORK_PHY_TIMESTAMPING
depends on PHYLIB
depends on PTP_1588_CLOCK
select CRC32
help
Supports the DP83640 PHYTER with IEEE 1588 features.

This driver adds support for using the DP83640 as a PTP
clock. This clock is only useful if your PTP programs are
getting hardware time stamps on the PTP Ethernet packets
using the SO_TIMESTAMPING API.

In order for this to work, your MAC driver must also
implement the skb_tx_timestamp() function.

config PTP_1588_CLOCK_INES
tristate "ZHAW InES PTP time stamping IP core"
depends on NETWORK_PHY_TIMESTAMPING
depends on HAS_IOMEM
depends on PHYLIB
depends on PTP_1588_CLOCK
help
This driver adds support for using the ZHAW InES 1588 IP
core. This clock is only useful if the MII bus of your MAC
is wired up to the core.

config PTP_1588_CLOCK_PCH
tristate "Intel PCH EG20T as PTP clock"
depends on X86_32 || COMPILE_TEST
depends on HAS_IOMEM && PCI
depends on NET
depends on PTP_1588_CLOCK
help
This driver adds support for using the PCH EG20T as a PTP
clock. The hardware supports time stamping of PTP packets
when using the end-to-end delay (E2E) mechanism. The peer
delay mechanism (P2P) is not supported.

This clock is only useful if your PTP programs are getting
hardware time stamps on the PTP Ethernet packets using the
SO_TIMESTAMPING API.

To compile this driver as a module, choose M here: the module
will be called ptp_pch.

config PTP_1588_CLOCK_KVM
tristate "KVM virtual PTP clock"
depends on PTP_1588_CLOCK
depends on (KVM_GUEST && X86) || (HAVE_ARM_SMCCC_DISCOVERY && ARM_ARCH_TIMER)
default y
help
This driver adds support for using kvm infrastructure as a PTP
clock. This clock is only useful if you are using KVM guests.

To compile this driver as a module, choose M here: the module
will be called ptp_kvm.

config PTP_1588_CLOCK_IDT82P33
tristate "IDT 82P33xxx PTP clock"
depends on PTP_1588_CLOCK && I2C
default n
help
This driver adds support for using the IDT 82P33xxx as a PTP
clock. This clock is only useful if your time stamping MAC
is connected to the IDT chip.

To compile this driver as a module, choose M here: the module
will be called ptp_idt82p33.

config PTP_1588_CLOCK_IDTCM
tristate "IDT CLOCKMATRIX as PTP clock"
depends on PTP_1588_CLOCK && I2C
default n
help
This driver adds support for using IDT CLOCKMATRIX(TM) as a PTP
clock. This clock is only useful if your time stamping MAC
is connected to the IDT chip.

To compile this driver as a module, choose M here: the module
will be called ptp_clockmatrix.

config PTP_1588_CLOCK_VMW
tristate "VMware virtual PTP clock"
depends on ACPI && HYPERVISOR_GUEST && X86
depends on PTP_1588_CLOCK
help
This driver adds support for using VMware virtual precision
clock device as a PTP clock. This is only useful in virtual
machines running on VMware virtual infrastructure.

To compile this driver as a module, choose M here: the module
will be called ptp_vmw.

config PTP_1588_CLOCK_OCP
tristate "OpenCompute TimeCard as PTP clock"
depends on PTP_1588_CLOCK
depends on HAS_IOMEM && PCI
depends on I2C && MTD
depends on SERIAL_8250
depends on !S390
depends on COMMON_CLK
select NET_DEVLINK
help
This driver adds support for an OpenCompute time card.

The OpenCompute time card is an atomic clock along with
a GPS receiver that provides a Grandmaster clock source
for a PTP enabled network.

More information is available at http://www.timingcard.com/

endmenu

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