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(parent: a62a56d) | patch
ptp: ocp: Have FPGA fold in ns adjustment for adjtime.
authorJonathan Lemon <jonathan.lemon@gmail.com>
Wed, 15 Sep 2021 02:16:34 +0000 (19:16 -0700)
committerDavid S. Miller <davem@davemloft.net>
Wed, 15 Sep 2021 10:10:01 +0000 (11:10 +0100)
commit6d59d4fa1789e0ca51dc33494376272a61b80104
tree1bd6ca1ba065ae0414ae55b411c9b9d808982c3ctree
parenta62a56d04e63cf0ececb5dd339811f0a14b7e77ccommit | diff
ptp: ocp: Have FPGA fold in ns adjustment for adjtime.

The current implementation of adjtime uses gettime/settime to
perform nanosecond adjustments.  This introduces addtional phase
errors due to delays.

Instead, use the FPGA's ability to just apply the nanosecond
adjustment to the clock directly.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/ptp/ptp_ocp.c diff | blob | history
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