Lede-17.01 booting hang using 2 netwrok interface

Hello All, I create a new SBC brand - NutsBoard, and I want porting LEDE to my new creation as following:
http://nutsboard.org/products

It has 1 wan port and 4 lan port, so in kernel, I have 2 interface:
eth0: 4 LAN port
eth1: 1 WAN port

my idea is use VLAN+NAT to control them, but it seems conflict with LEDE structure, after I porting rootfs and boot up, the error massage as following and always hang:
[ 12.550537] net eth0: initializing cpsw version 1.12 (0)
[ 12.580942] net eth0: initialized cpsw ale version 1.4
[ 12.609274] net eth0: ALE Table size 1024
[ 12.719541] net eth0: phy found : id is : 0x0
[ 12.742601] 8021q: adding VLAN 0 to HW filter on device eth0
[ 12.773421] device eth0 entered promiscuous mode
[ 12.829136] cpsw 4a100000.ethernet eth0: failed to initialize vlan filtering on this port
[ 12.850502] IPv6: ADDRCONF(NETDEV_UP): br-lan: link is not ready
[ 12.921888] net eth1: initializing cpsw version 1.12 (0)
[ 13.030030] net eth1: phy found : id is : 0x4dd072
[ 13.035213] net eth1: promiscuity not disabled as the other interface is still in promiscuity mode
[ 13.109274] net eth1: promiscuity not disabled as the other interface is still in promiscuity mode
[ 13.161160] IPv6: ADDRCONF(NETDEV_UP): eth1: link is not ready
[ 13.167342] 8021q: adding VLAN 0 to HW filter on device eth1
[ 14.719862] cpsw 4a100000.ethernet eth0: Link is Up - 100Mbps/Half - flow control off
[ 14.739145] br-lan: port 1(eth0) entered forwarding state
[ 14.744912] br-lan: port 1(eth0) entered forwarding state
[ 14.779891] IPv6: ADDRCONF(NETDEV_CHANGE): br-lan: link becomes ready
[ 16.739094] br-lan: port 1(eth0) entered forwarding state
[ 17.030296] cpsw 4a100000.ethernet eth1: Link is Up - 1Gbps/Full - flow control rx/tx
[ 17.065650] IPv6: ADDRCONF(NETDEV_CHANGE): eth1: link becomes ready
[ 17.112311] net eth1: promiscuity not disabled as the other interface is still in promiscuity mode
[ 18.299285] net eth1: promiscuity not disabled as the other interface is still in promiscuity mode

[ 28.223359] random: nonblocking pool is initialized

Please give me some comments, my network knowledge is just so so, need you guys help! Thank you so much!.