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Commit f087b506 authored by Lendacky, Thomas's avatar Lendacky, Thomas Committed by David S. Miller
Browse files

amd-xgbe: Set the MII control width for the MAC interface 



When running in SGMII mode at speeds below 1000Mbps, the auto-negotition
control register must set the MII control width for the MAC interface
to be 8-bits wide.  By default the width is 4-bits.

Signed-off-by: default avatarTom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3b1ded4e

drivers/net/ethernet/amd/xgbe/xgbe-common.h

+1 −0
Original line number Diff line number Diff line
@@ -1339,6 +1339,7 @@ 
#define XGBE_AN_CL37_PCS_MODE_BASEX	0x00

#define XGBE_AN_CL37_PCS_MODE_SGMII	0x04

#define XGBE_AN_CL37_TX_CONFIG_MASK	0x08

#define XGBE_AN_CL37_MII_CTRL_8BIT	0x0100



/* Bit setting and getting macros

 *  The get macro will extract the current bit field value from within

drivers/net/ethernet/amd/xgbe/xgbe-mdio.c

+2 −0
Original line number Diff line number Diff line
@@ -982,6 +982,8 @@ static void xgbe_an37_init(struct xgbe_prv_data *pdata) 
		break;

	}



	reg |= XGBE_AN_CL37_MII_CTRL_8BIT;



	XMDIO_WRITE(pdata, MDIO_MMD_VEND2, MDIO_VEND2_AN_CTRL, reg);



	netif_dbg(pdata, link, pdata->netdev, "CL37 AN (%s) initialized\n",