I have a router TP-Link TD-W8968 v2, and i want to have openwrt running on it. I checked the information about v3 and v5 versions here, but there is no info about my v2 version. Here is
https://wikidevi.com/wiki/TP-LINK_TD-W8968_v2 also suggests that the SOC is unsupported by OpenWrt to begin with, WLAN should be possible, xDSL is never going to and the hardware specifications are pretty tight for a device including an xDSL modem.