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authorYaniv Rosner <yanivr@broadcom.com>2010-06-14 23:25:19 -0700
committerDavid S. Miller <davem@davemloft.net>2010-06-14 23:25:19 -0700
commit1ab6c163dee279559e3a62d774af7e4c4c9b4c67 (patch)
treee0e53b37ebece752bb6c0eded82c6c493d990155 /drivers/net/bnx2x_link.c
parentd6cc1d642de9284cb26488ea390d915b50ee2504 (diff)
downloadop-kernel-dev-1ab6c163dee279559e3a62d774af7e4c4c9b4c67.zip
op-kernel-dev-1ab6c163dee279559e3a62d774af7e4c4c9b4c67.tar.gz
bnx2x: Fix link problem with some DACs
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>
Diffstat (limited to 'drivers/net/bnx2x_link.c')
-rw-r--r--drivers/net/bnx2x_link.c8
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c
index ff70be8..0383e30 100644
--- a/drivers/net/bnx2x_link.c
+++ b/drivers/net/bnx2x_link.c
@@ -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 &
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