On Thu, Sep 28, 2017 at 10:25:40AM -0500, Brandon Streiff wrote: > We also utilize a feature of the "generation 3" PTP hardware that lets > us to embed the timestamp value into one of the reserved fields in the > PTP header. This lets us extract the timestamp out of the header and > avoid an SMI access in the RX codepath. (This implementation does not > presently support the older generations.)
That is fine for the later models, but we really need the code to read over MDIO as well. You added .ptp_support = true for those older switches, and so the present series won't work. If it helps, maybe I can adapt the relevant code from my driver to your work. Thanks, Richard