And the four-star couldn't stop raving about his trip.
"It was great, I loved it. That was first time being on campus with the coaches. The campus was amazing. I didn't know they had that many (NCAA) trophies. It was amazing. I felt comfortable there the whole time," said Johnson.
Johnson was hosted by fellow East Bay native Adarius Pickett and spent time with other players on the visit.
With other verbals and recruits there, Johnson and the other commits did some recruiting, and got one commit out of it.
"All of us commits spent most of our time together, we were in a big group and all hanging out together," said Johnson. "Keisean (Lucier-South) was up there and he committed so that was nice."
Johnson said his first time in the Rose Bowl was better than he expected.
"The Rose Bowl was way more lively than I thought," said Johnson. "The fans were really in to it, the crowd was loud the whole game. Every third down, they got intense. I felt very comfortable there. The players were very welcoming, even the fans. A couple of fans came over and talked to me."
It was the Bruins fifth win in a row down the stretch and Johnson was at the first win in the streak, a close one over Cal last month, and he said the Bruins are a different team.
"Honestly, I could tell the confidence level has changed," said Johnson. "They're bonded together. At practice, they were just having fun but confidence in what they're doing."
Johnson said he got a little more insight in to how UCLA wants to use him.
"They want me as an athlete and they want me to play both sides," said Johnson. "I talked to Coach Mora about it and I'm coming in as a receiver, but they want me to play corner too."
Johnson talked with a number of UCLA coaches who all have taken turns recruiting him.
"I was with Coach Yarbs (Eric Yarner) in the beginning and then Coach Meat (Demetrice Martin), then Angus (McClure) and then a lot of time with Coach Mora," said Johnson. "The thing that stood out to me the most about Coach Mora is he's very professional in the way he takes care of the kids and has them so disciplined and works them, but at the same time, he's having fun with it. I just noticed how the players interact with Coach Mora, they're serious but they also have fun."
Johnson's father played at Mississippi State, but joining his son on the visit, he was wowed by the Westwood campus himself.
"My dad went with me and he liked it," said Johnson. "He said if he had an offer from UCLA, he would have taken that."
The visit was the only trip that Johnson will take.
"This is the only visit for me," said Johnson.