• Linus Walleij's avatar
    net: dsa: Add Vitesse VSC73xx DSA router driver · 05bd97fc
    Linus Walleij authored
    This adds a DSA driver for:
    
    Vitesse VSC7385 SparX-G5 5-port Integrated Gigabit Ethernet Switch
    Vitesse VSC7388 SparX-G8 8-port Integrated Gigabit Ethernet Switch
    Vitesse VSC7395 SparX-G5e 5+1-port Integrated Gigabit Ethernet Switch
    Vitesse VSC7398 SparX-G8e 8-port Integrated Gigabit Ethernet Switch
    
    These switches have a built-in 8051 CPU and can download and execute
    firmware in this CPU. They can also be configured to use an external
    CPU handling the switch in a memory-mapped manner by connecting to
    that external CPU's memory bus.
    
    This driver (currently) only takes control of the switch chip over
    SPI and configures it to route packages around when connected to a
    CPU port. The chip has embedded PHYs and VLAN support so we model it
    using DSA as a best fit so we can easily add VLAN support and maybe
    later also exploit the internal frame header to get more direct
    control over the switch.
    
    The four built-in GPIO lines are exposed using a standard GPIO chip.
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    05bd97fc
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