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OpenCloudOS-Kernel/drivers/ptp/Kconfig

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ptp: Added a brand new class driver for ptp clocks. This patch adds an infrastructure for hardware clocks that implement IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a registration method to particular hardware clock drivers. Each clock is presented as a standard POSIX clock. The ancillary clock features are exposed in two different ways, via the sysfs and by a character device. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-04-22 18:03:08 +08:00
#
# PTP clock support configuration
#
menu "PTP clock support"
comment "Enable Device Drivers -> PPS to see the PTP clock options."
depends on PPS=n
config PTP_1588_CLOCK
tristate "PTP clock support"
depends on EXPERIMENTAL
depends on PPS
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.
ptp: Added a clock that uses the eTSEC found on the MPC85xx. The eTSEC includes a PTP clock with quite a few features. This patch adds support for the basic clock adjustment functions, plus two external time stamps, one alarm, and the PPS callback. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: John Stultz <john.stultz@linaro.org> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-04-22 18:03:54 +08:00
config PTP_1588_CLOCK_GIANFAR
tristate "Freescale eTSEC as PTP clock"
depends on PTP_1588_CLOCK
depends on GIANFAR
help
This driver adds support for using the eTSEC 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 gianfar_ptp.
ptp: Added a brand new class driver for ptp clocks. This patch adds an infrastructure for hardware clocks that implement IEEE 1588, the Precision Time Protocol (PTP). A class driver offers a registration method to particular hardware clock drivers. Each clock is presented as a standard POSIX clock. The ancillary clock features are exposed in two different ways, via the sysfs and by a character device. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-04-22 18:03:08 +08:00
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