Since they're both misdemeanor offenses, he probably won't miss any time. Barring any future offenses, he will definitely be eligible for the BYU game.

Did you see the article below that one? It details the transfer of a Stanford RB that (as a graduate student) will be able to play immediately. Looks like the loss of Jay Ajayi might be less of an issue than some had hoped...

Link here: http://collegefootballtalk.nbcsports.com/2015/04/22/stanfords-second-leading-rusher-moves-on-to-boise-state/