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This 1G backplane ethernet as described in >> clause 70. Clause 73 autonegotiation is mandatory, and only full duplex >> operation is supported. >> >> Signed-off-by: Sean Anderson >> --- > > What does 1000BASE-KX have to do with anything? > It doesn't, really. This should have been part of [1], but it looks like I put it in the wrong series. --Sean [1] https://lore.kernel.org/linux-phy/20220804220602.477589-1-sean.anderson@seco.com/