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  • John Crispin's avatar
    staging: mt7621-eth: add support for mt7621 · 3497a53a
    John Crispin authored
    
    
    Add support for SoCs from the mt7621 family. These all have 2 GMAC ports,
    both of which are attached to the same internal 1000MBit switch. Currently
    we only support GMAC1 as the sole CPU port. MT7621 is very similar to
    MT7620 with only a few registers having different offsets. MT7621 is the
    first SoC to have the new QDMA engine builtin. The older PDMA engine is
    also present. unfortunatley, to get the best performance we need to run RX
    on PDMA and TX on QDMA. This SoC is also the first to have TX vlan
    offloading and TSO6 support.
    
    NeilBrown: the driver didn't work when I tested, so I changed it
      to match known-working code as much as possible.  This included
      converting to the PDMA engine for TX.
    
    Signed-off-by: default avatarJohn Crispin <blogic@openwrt.org>
    Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
    Signed-off-by: default avatarMichael Lee <igvtee@gmail.com>
    Signed-off-by: default avatarNeilBrown <neil@brown.name>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    3497a53a