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    Lokesh Vutla authored
    In order to enable cpsw on AM335x ICEv2 board, the following needs to be done:
    
    1)There are few on board jumper settings which gives a choice between
    cpsw and PRUSS, that needs to be properly selected[1]. Even after selecting
    this, there are few GPIOs which control these muxes that needs to be held high.
    
    2) The clock to PHY is provided by a PLL-based clock synthesizer[2] connected
    via I2C. This needs to properly programmed and locked for PHY operation.
    And PHY needs to be reset before before being used, which is also held by
    a GPIO.
    
    3) RMII mode needs to be selected.
    
    [1] http://www.ti.com/lit/zip/tidr336
    [2] http://www.ti.com/lit/ds/symlink/cdce913.pdf
    
    
    
    Reviewed-by: default avatarTom Rini <trini@konsulko.com>
    Acked-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
    Signed-off-by: default avatarLokesh Vutla <lokeshvutla@ti.com>
    97f3a178
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