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* ptp: Add a ptp clock driver for Broadcom DTEArun Parameswaran2017-06-151-0/+1
| | | | | | | | This patch adds a ptp clock driver for the Broadcom SoCs using the Digital timing Engine (DTE) nco. Signed-off-by: Arun Parameswaran <arun.parameswaran@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* PTP: add kvm PTP driverMarcelo Tosatti2017-02-081-0/+1
| | | | | | | | | | | | | | | | | | | | | Add a driver with gettime method returning hosts realtime clock. This allows Chrony to synchronize host and guest clocks with high precision (see results below). chronyc> sources MS Name/IP address Stratum Poll Reach LastRx Last sample =============================================================================== To configure Chronyd to use PHC refclock, add the following line to its configuration file: refclock PHC /dev/ptpX poll 3 dpoll -2 offset 0 Where /dev/ptpX is the kvmclock PTP clock. Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* supports eg20t ptp clockTakahiro Shimizu2012-03-091-0/+1
| | | | | | | | | | | Supports EG20T ptp clock in the driver Changes e-mail address. Adds number. Signed-off-by: Takahiro Shimizu <tshimizu818@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* ptp: Added a clock driver for the IXP46x.Richard Cochran2011-05-231-0/+1
| | | | | | | | | | | | This patch adds a driver for the hardware time stamping unit found on the IXP465. The basic clock operations and an external trigger are implemented. Signed-off-by: Richard Cochran <richard.cochran@omicron.at> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: John Stultz <john.stultz@linaro.org> Acked-by: Krzysztof Halasa <khc@pm.waw.pl> Signed-off-by: John Stultz <john.stultz@linaro.org>
* ptp: Added a brand new class driver for ptp clocks.Richard Cochran2011-05-231-0/+6
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>
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