# wget http://www.mellanox.com/downloads/firmware/fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin.zip
# unzip fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin.zip
# mstflint -d 03:00.0 -i fw-ConnectX3-rel-2_42_5000-MCX354A-FCB_A2-A5-FlexBoot-3.4.752.bin -allow_psid_change burn
# reboot

# mst start
# mlxconfig -d /dev/mst/mt4099_pciconf0 set LINK_TYPE_P1=2 LINK_TYPE_P2=2
reboot