Yule's etymology and IE roots (or not)

Is there any etymology for English yule (OE geol, Anglian giuli ON jól, ýlir Gothic jiuleis) beside *yegWH-, cf. Greek zophos?
The Germanic forms point to many possibilities
jeula-
jeuwula-
jeuhula- (?)
jeuhla- (?)
jeulula- (haplology)
jewula-
jehula- (?)

In some sites I find attempts to link it to *kWelo- "to turno", what would lead to a -hwula- ending...


Joao SL