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Luwei Zhou
278d240478
FEC ptp timer has 4 channel compare/trigger function. It can be used to enable pps output. The pulse would be ouput high exactly on N second. The pulse ouput high on compare event mode is used to produce pulse per second. The pulse width would be one cycle based on ptp timer clock source.Since 31-bit ptp hardware timer is used, the timer will wrap more than 2 seconds. We need to reload the compare compare event about every 1 second. Signed-off-by: Luwei Zhou <[email protected]> Signed-off-by: David S. Miller <[email protected]>