LTC Connector DE10-Standard FPGA

I am trying to access the I2C bus on the LTC connector on the DE10 Standard FPGA board. 

I have enabled the i2c controllers on the HPS.

How do I now gain access to the i2c2 pins that are connected to the ltc connector from the HPS? 

I was able to communicate to the g-sensor that shares the same bus with the ltc connector, but I need to access the LTC  connector to communicate with a separate board.

I see that there is a TS3A5018 switch. Am I required to set the HPS_LTC_GPIO to low to switch communication from spi to i2c? 

Kindly help.