net: stmmac: Add support for external trigger timestamping
The Synopsis MAC controller supports auxiliary snapshot feature that allows user to store a snapshot of the system time based on an external event. This patch add supports to the above mentioned feature. Users will be able to triggered capturing the time snapshot from user-space using application such as testptp or any other applications that uses the PTP_EXTTS_REQUEST ioctl request. Cc: Richard Cochran <richardcochran@gmail.com> Signed-off-by: Tan Tee Min <tee.min.tan@intel.com> Co-developed-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> Signed-off-by: Wong Vee Khee <vee.khee.wong@linux.intel.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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