Laurence Evans
a6f73460b5
sfc: Add support for SFC9100 timestamp format
...
The clock minor tick on the SFC9100 family is 2^-27 s, not 1 ns.
There are also various pipeline delays which we need to correct for
when interpreting timestamps.
We query the firmware for the clock format and corrections at run-time.
[bwh: Combined and rebased several changes]
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com >
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