How to support ar8035 on 4530r/wdr43xx

I have a device which cpu is ar9344 and switch is ar8035
I will not use wifi.
It's partations of flash is encrypted,there is no openwrt firmware.
So I want to flash a mdm of flash of tplink 4530r,but the switch is different
It's switch chip seems 8337,how do I add the support of ar8035 on 4530r's openwrt firmware