GLENDALE, Ariz. -- One quarter won't be enough for Arizona Cardinals quarterback Carson Palmer against the San Diego Chargers on Saturday (10 p.m. ET).

But that's all the starting quarterback will get.

The plan is for Palmer's workload to increase from one series to the entire first quarter. Coach Bruce Arians said backup Drew Stanton will play a "little bit" in the second quarter, and then Logan Thomas and Phillip Sims will split the remainder of the game.

"You kinda got a tease last week just getting a couple -- seven or eight plays or whatever it was," Palmer said. "You get a little bit longer this week. It's still not enough. You come out, no matter how successful the first quarter goes, you always want to go a little bit more."

Recently-signed running back Chris Johnson will get five or six carries, Arians said, in order to "get him acclimated to what we're doing."

"I don't want to stick him in a situation where he's stuck in a blitz pickup that he's unsure [of] and the quarterback gets hit because he's still learning our system," Arians said. "But the things he's familiar with, we'll try to get him out there and get him some football."

Arians also said rookie running back David Johnson should play most of the second quarter and all of the third.