netdev - mv88e6xxx broken on 6176 with "Disentangle STU from VTU"

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Message-ID: <20220318182817.5ade8ecd@dellmb>
Date:   Fri, 18 Mar 2022 18:28:17 +0100
From:   Marek Behún <kabel@...nel.org>
To:     Tobias Waldekranz <tobias@...dekranz.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vladimir Oltean <olteanv@...il.com>
Cc:     netdev@...r.kernel.org
Subject: mv88e6xxx broken on 6176 with "Disentangle STU from VTU"

Hello Tobias,

mv88e6xxx fails to probe in net-next on Turris Omnia, bisect leads to
commit
  49c98c1dc7d9 ("net: dsa: mv88e6xxx: Disentangle STU from VTU")

Trace:
  mv88e6xxx_setup
    mv88e6xxx_setup_port
      mv88e6xxx_port_vlan_join(MV88E6XXX_VID_STANDALONE) OK
      mv88e6xxx_port_vlan_join(MV88E6XXX_VID_BRIDGED) -EOPNOTSUPP

Marek