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commit953b0dcbe2upstream. Commitbf3504cea7("net: dsa: mv88e6xxx: Add 6390 family PCS registers to ethtool -d") added support for dumping SerDes PCS registers via ethtool -d for Peridot. The same implementation is also valid for Topaz, but was not enabled at the time. Signed-off-by: Marek Behún <kabel@kernel.org> Fixes:bf3504cea7("net: dsa: mv88e6xxx: Add 6390 family PCS registers to ethtool -d") Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>