w5500 ethernet can not work well

When i use w5500 as a eth device,i found that when eth bring up, it only write the mac register, and ip netmask gateway is configured but not write into it's register. Then i wirte the config into ip register(netmask gateway etc.), i can ping my board by PC,but can not ping PC by my board. And in the driver of w5500, there is only socket0 is supported,in fact the w5500 is supported as much as 8 sockets. hope to fix this problem,thanks.