Eval-ADV7612-7511: Disable ADV7612 for I2C

I have an EVAL-ADV7612-7511 board & I want to jump I2C from another board in order to command the ADV7511. However

my driver board already has an ADV7612 on it and it will conflict with the ADV7612 on the eval board.

The BF524 has an output pin (B7) = PH1 which drives the signal 7612_CSn. Driving this high will disable the eval board ADV7612

in terms of I2C access, basically taking it off the I2c bus. How do I set PH1? I see a command 'rep pinset <n>' where n is 1-8, but

there are more than 8 GPIO pins. Is this used in conjunction with the 'rep port' command?