Hello,
I'm assuming you're talking about NSX for vSphere. If this is correct, then there's no Controller integration available with ToR switches.
NSX-v can interwork with other VXLAN endpoints using Multicast control plane (which doesn't depend on Controllers). You'll need to first create Logical Switches in NSX, note their VNI and Multicast address, and then configure these into your ToR(s).