net: dsa: sja1105: make future_base_time a common helper
Because the PTP_CLK pin starts toggling only at a time higher than the current PTP clock, this helper from the time-aware shaper code comes in handy here as well. We'll use it to transform generic user input for the perout request into valid input for the sja1105 hardware. Signed-off-by:Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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