Waller (knee) was a limited participant at Wednesday's practice, Vic Tafur of The Athletic reports.
Waller played 70 of the Raiders' 74 offensive snaps in Sunday's 30-23 loss to the Bills, hauling in nine of his 12 targets for 88 yards. The tight end isn't believed to have suffered any setbacks coming out of that contest, so his limitations Wednesday were likely maintenance-related.