Commit 3a68ba6f authored Jan 06, 2020 by Vladimir Oltean Committed by David S. Miller Jan 05, 2020

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>

parent 6c930994

drivers/net/phy/phylink.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -281,6 +281,7 @@ static int phylink_parse_mode(struct phylink pl, struct fwnode_handle fwnode)

		switch (pl->link_config.interface) {
		case PHY_INTERFACE_MODE_SGMII:
		case PHY_INTERFACE_MODE_QSGMII:
		phylink_set(pl->supported, 10baseT_Half);
		phylink_set(pl->supported, 10baseT_Full);
		phylink_set(pl->supported, 100baseT_Half);

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