Jenkins is attending the three-day camp at Valley Ranch and working on the side with strength and conditioning coaches. He skipped all of the voluntary offseason program workouts but attended the mandatory June minicamp after seeking a trade from the team after the additions of corners Brandon Carr and Morris Claiborne.
Bernadeau, who signed a four-year, $11 million free agent deal in March and was penciled in as a starter, has yet to practice with the team after needing hip surgery. Coale, the team's fifth-round pick, suffered a stress fracture in his foot that required May surgery. Johnson has a hamstring injury.
Of the five players, Jenkins' return is expected to take the longest. Bernadeau and Coale could begin practicing during the team's second week in Oxnard, Calif., and Johnson could return sooner than that.
If a player is on the reserve PUP list when teams cut down to the 53-man roster, then he will miss the first six games of the season. If Jenkins is not cleared, that would hurt his marketability as an unrestricted free agent in 2013.
The Cowboys will fly to Oxnard, Calif., on Saturday and the team's first full-squad workout will take place on Monday.