I'm planning to develop an ARM9 based Linux board as an Ethernet wired router device.
But I have a serious problem on designing the router with those things. I need 1*WAN port for Internet and 4*LAN ports for switching on device. For that, RTL8305 should be connected with two MII interfaces. I mean EP9302 should provide two Ethernet Interface (such as eth0, eht1). But, unfortunately, EP9302 has only one Ethernet interface.
Are there any solution for this problem?
I heard I may control Ethernet Switch Chip with GPIO pins. But I don't know how to configure them and how to connect them.