I can't speak on behalf of Qualcomm as to whether they've abandoned this chip. However, there are plenty of routers/APs that use this chip and support for it and some IPQ5018 based devices has recently been added to OpenWrt. Hence, I'm picking up where Qualcomm has left off and would like to send as much as possible upstream for mainline support. I've included a cover letter here: https://lore.kernel.org/all/DS7PR19MB8883BE38C2B500D03213747A9DC72@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/
