From: Yaniv Rosner Date: Tue, 15 Jun 2010 06:25:19 +0000 (-0700) Subject: bnx2x: Fix link problem with some DACs X-Git-Tag: v3.12-rc1~9497^2~590 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1ab6c163dee279559e3a62d774af7e4c4c9b4c67;p=kernel%2Fkernel-generic.git 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 Signed-off-by: Yaniv Rosner Signed-off-by: Eilon Greenstein Signed-off-by: David S. Miller --- 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 &