dt-bindings: net: ethernet-controller: add QUSGMII mode

Add a new QUSGMII mode, standing for "Quad Universal Serial Gigabit
Media Independent Interface", a derivative of USGMII which, similarly to
QSGMII, allows to multiplex 4 1Gbps links to a Quad-PHY.

The main difference with QSGMII is that QUSGMII can include an extension
instead of the standard 7bytes ethernet preamble, allowing to convey
arbitrary data such as Timestamps.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/Documentation/devicetree/bindings/net/ethernet-controller.yaml b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
index c138a1022879764af2c7e813b1a3688f67c24285..4b3c590fcebf06d1417245b1343a8ae73077c66b 100644 (file)
--- a/Documentation/devicetree/bindings/net/ethernet-controller.yaml
+++ b/Documentation/devicetree/bindings/net/ethernet-controller.yaml
@@ -67,6 +67,7 @@ properties:
       - gmii
       - sgmii
       - qsgmii
+      - qusgmii
       - tbi
       - rev-mii
       - rmii