In G35D devkit, the FMC I2C lines are connected from the I2C Mux switch through I2C0. I2C1 is not used.
To config the FMC I2C lines, please refer the function “fmc_power_sequence” in the zynqmp.c file from U-boot patch. Please connect with iWave representative for the patch file.
For further inquiries, please get in touch with mktg@iwave-global.com
Please find the detailed G35M/G35D product information in the below link,