Walker confirmed the visit Sunday via his Twitter account.
"To my (Jayhawk) fans I'm goin to KU madness," he wrote.
Walker, who hails from Bonifay (FL) Holmes County High School, is a five-star prospect in the Class of 2013, and the No. 3-ranked power forward.
"His rise to the top of the 2013 rankings has been quick and swift," reads his Scout.com evaluation. "Walker has grown to 6-foot-10 and didn't lose a bit of his mobility. Walker runs the floor quite well, is a terrific athlete and an impressive rebounder. Defensively he's tough to score on, as he uses his length, timing and athleticism to block shots. Going forward he'll need to continue to develop his low post scoring moves, but he's loaded with potential."