I've seen various reports of iPhone 6 Plus get 2.1A charging from Macbook Pro.
However, I'm unable to replicated that on my own Macbook Pro Retina 15" 2015.
It stays at 1A as below
Current Available (mA): 500 Current Required (mA): 500 Extra Operating Current (mA): 500
Currently on Yosemite and plugged in.
Anyone having the same issue (or has been able to get the Macbook to power out 2.1A?)