path: root/Documentation/networking
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authorVladimir Oltean <vladimir.oltean@nxp.com>2020-01-06 03:34:10 +0200
committerDavid S. Miller <davem@davemloft.net>2020-01-05 23:22:32 -0800
commit3a68ba6fbab786a50f380894c832bf36ba7335f3 (patch)
treeafe7ad5de7c1d41c109c902016aa62a694aa6880 /Documentation/networking
parentmii: Add helpers for parsing SGMII auto-negotiation (diff)
net: phylink: make QSGMII a valid PHY mode for in-band AN
QSGMII is a SerDes protocol clocked at 5 Gbaud (4 times higher than SGMII which is clocked at 1.25 Gbaud), with the same 8b/10b encoding and some extra symbols for synchronization. Logically it offers 4 SGMII interfaces multiplexed onto the same physical lanes. Each MAC PCS has its own in-band AN process with the system side of the QSGMII PHY, which is identical to the regular SGMII AN process. So allow QSGMII as a valid in-band AN mode, since it is no different from software perspective from regular SGMII. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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