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Add support for the MT7628 embedded switch.
The switch has 5 built-in 100Mbps user ports (ports 0-4) and one 1Gbps
port that is internally attached to the SoCs CPU MAC and serves as the
CPU port.
The switch hardware has a very limited 16 entry VLAN table. Configuring
VLANs is the only way to control switch forwarding. Currently 6 entries
are used by tag_8021q to isolate the ports. Double tag feature is
enabled to force the switch to append the VLAN tag even if the incoming
packet is already tagged, this simulates VLAN-unaware functionality and
simplifies the tagger implementation.
Signed-off-by: Joris Vaisvila <joey@tinyisr.com>
Reviewed-by: Daniel Golle <daniel@makrotopia.org>
Link: https://patch.msgid.link/20260813190241.789323-5-joey@tinyisr.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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