There seems to be progress in supporting Xperia phones in the mainline kernel:
https://www.phoronix.com/scan.php?page=news_item&px=Linux-SDM630-SDM660-Patches
e.g. Sony Xperia XA2 uses Snapdragon 630
EDIT: List of phones with Snapdragon 630/660: https://www.gsmarena.com/results.php3?sChipset=4,6