I received the EVAL-ADV7610EBZ today. I verified that it was detected by Windows 7 64-bit and correct drivers loaded.
Then I ran the following script and verified that it received/transmitted 720x480p60 and 640x480p60:
:6-1d Port A, 480i,576i,240p,288p,480p 576p YPrPb 444 in, RGB 444 out, Through HDMI VIC[1-3,6-14,17,18,21-29,30]:
Please note that this script is configuring the ADV7610 for 24-bit SDR (YCbCr 444)
98 03 40 ; 24 bit SDR 444 Mode 0
If your board has ADV7610 output going to an i.mx6 that only accepts 16-bit YCbCr 422, then you will need to change that write accordingly.
-Matt