I dont understand. If I have this setup:

vSwitch0 Portgroup1 (VLAN 100) contains pNIC1 connected to pSwitch1 (VLAN 100)

vSwitch0 Portgroup2 (VLAN 101) contains pNIC2 connected to pSwitch1 (VLAN 101)

You have vSwitch0 with 2 uplink (pNIC1 and 2) connected to port in trunk mode (that allow both VLAN 100 and 101).

The two portgroup ARE connected to vSwitch, NOT directly to the tro pNIC.

Andre