diff options
| author | Yaniv Rosner <yanivr@broadcom.com> | 2010-06-15 10:25:19 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-06-15 10:25:19 +0400 |
| commit | 1ab6c163dee279559e3a62d774af7e4c4c9b4c67 (patch) | |
| tree | e0e53b37ebece752bb6c0eded82c6c493d990155 | |
| parent | d6cc1d642de9284cb26488ea390d915b50ee2504 (diff) | |
| download | linux-1ab6c163dee279559e3a62d774af7e4c4c9b4c67.tar.xz | |
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>
| -rw-r--r-- | drivers/net/bnx2x_link.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/net/bnx2x_link.c b/drivers/net/bnx2x_link.c index ff70be898765..0383e3066313 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 & |