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Commit 2f3a081e authored by Steve Glendinning's avatar Steve Glendinning Committed by David S. Miller
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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: default avatarStephane Fillod <fillods@users.sf.net>
Signed-off-by: default avatarSteve Glendinning <steve.glendinning@shawell.net>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c0b92e4d

drivers/net/usb/smsc75xx.c

+8 −0
Original line number Diff line number Diff line
@@ -951,6 +951,14 @@ static int smsc75xx_reset(struct usbnet *dev) 
	ret = smsc75xx_write_reg(dev, INT_EP_CTL, buf);

	check_warn_return(ret, "Failed to write INT_EP_CTL: %d", ret);



	/* allow mac to detect speed and duplex from phy */

	ret = smsc75xx_read_reg(dev, MAC_CR, &buf);

	check_warn_return(ret, "Failed to read MAC_CR: %d", ret);



	buf |= (MAC_CR_ADD | MAC_CR_ASD);

	ret = smsc75xx_write_reg(dev, MAC_CR, buf);

	check_warn_return(ret, "Failed to write MAC_CR: %d", ret);



	ret = smsc75xx_read_reg(dev, MAC_TX, &buf);

	check_warn_return(ret, "Failed to read MAC_TX: %d", ret);