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bnx2x: Fix link problem with some DACs

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Change 2wire transfer rate of SFP+ module EEPROM from 400Khz to 100Khz
since some DACs(direct attached cables) do not work at 400Khz.

Reported-by: Krzysztof Oldzki <ole@ans.pl>
Signed-off-by: Yaniv Rosner <yanivr@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Yaniv Rosner 2010-06-14 23:25:19 -07:00 committed by David S. Miller
parent d6cc1d642d
commit 1ab6c163de
1 changed files with 5 additions and 3 deletions
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8
drivers/net/bnx2x_link.c
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@ -4266,14 +4266,16 @@ static u8 bnx2x_ext_phy_init(struct link_params *params, struct link_vars *vars)
MDIO_PMA_REG_10G_CTRL2, 0x0008);
}
/* Set 2-wire transfer rate to 400Khz since 100Khz
is not operational */
/* Set 2-wire transfer rate of SFP+ module EEPROM
* to 100Khz since some DACs(direct attached cables) do
* not work at 400Khz.
*/
bnx2x_cl45_write(bp, params->port,
ext_phy_type,
ext_phy_addr,
MDIO_PMA_DEVAD,
MDIO_PMA_REG_8727_TWO_WIRE_SLAVE_ADDR,
0xa101);
0xa001);
/* Set TX PreEmphasis if needed */
if ((params->feature_config_flags &