He and his 67-year-old actor father are scheduled to be arraigned Nov. 13.
The father and son were arrested Sept. 17 after deputies searched their Malibu home, part of Redmond's probation. Police said drugs were found on Redmond and in Ryan O'Neal's living area.
Ryan O'Neal's attorney said the drugs did not belong to his client.
"It's unfortunate because Ryan O'Neal didn't possess methamphetamine, doesn't use methamphetamine and it wasn't his methamphetamine," attorney Mark Werksman said. "He never should have been prosecuted for this. We intend to vigorously challenge these charges in court, where they should be dismissed."