Davis, a 6-foot-8 senior forward who averaged 17.6 points and 10.7 rebounds last season, will be eligible to play this season for the Aztecs.
"I felt comfortable with the staff, and the system fits me," Davis told CBSSports.com on Wednesday while on a visit to San Diego State.
The Aztecs also sold Davis on the comparison to former San Diego State star Kawhi Leonard, who is long and athletic and also bears a facial resemblance as well.
"I've heard that plenty," Davis admitted. "Even before they started recruiting me."