smsc75xx: enable mac to detect speed/duplex from phy
This patch sets the automatic speed and duplex detection bits in MAC_CR to enable the mac to determine its speed automatically from the phy. Note this must be done BEFORE the receiver or transmitter is enabled. Signed-off-by: NStephane Fillod <fillods@users.sf.net> Signed-off-by: NSteve Glendinning <steve.glendinning@shawell.net> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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