Directed by John Ridley, the film, starring Andre Benjamin as Hendrix, is shooting in Dublin.
Newcomer Charles joins an experienced cast including Imogen Poots ('Fright Night') and Hayley Atwell ('Captain America: The First Avenger').
Atwell plays Linda Keith, Keith Richards' girlfriend, who discovered Hendrix performing in a nightclub and claimed to have given Hendrix Richards' Fender Stratocaster and his demo of Tim Rose singing "Hey Joe," which became Hendrix's first hit.
"She went to New York and took up further with Jimi Hendrix, who may have broken her heart, as she broke mine," wrote Richards in his memoir 'Life'.