Joe LaCava left Johnson on Sunday to become Woods' third full-time caddie.
"I spoke to Tiger about it. There's no hard feelings at all," Johnson said Thursday after shooting a 1-under 71 in the first round of the Dunhill Links Championship. "We had a great conversation. He just did what he did."
LaCava was the longtime caddie for Fred Couples but joined Johnson this summer. Johnson, one of the most talented American players, was looking for a caddie. Johnson won The Barclays last month with LaCava on the bag.
"I liked Joe. I still do. But you've got to make decisions and you can't get mad at him for the decisions he made," said Johnson, who was in the locker room after the final round of the Tour Championship when he found out LaCava had been hired by Woods.
"He got offered a job so he took it. You can't blame the guy. If he wants to go and caddie for him, it's fine by me."
Johnson will have Keith Sbarbaro, vice president of his club maker, TaylorMade, on his bag for the rest of the year. Sbarbaro has caddied for Johnson in tournaments in South Korea and Germany this year.
"He's a real good buddy of mine," Johnson said.