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>

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 1edca9725370be0a2a83ea490083dc6bb93767b8..88686e0f9ae14d37b1cbe3fa53f3eb562d23011a 100644 (file)
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -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);