Due to a problem in the Quartus® Prime Pro Edition Software version 23.4, a warning message that mentions "Enpirion voltage regulator is detected in this project" will appear even though the board is not using Intel® Enpirion® device when generating F-Tile HDMI FPGA IP Design Example.
To avoid this message, set the PMBus Slave device type to Other.
To do this in the Quartus® Prime Pro Edition Software, Click on Assignments > Device … > Device and Pin Options … > Power Management & VID > Slave device type > Other.
Then, specify the other parameters accordingly.
(For more information, you may refer to the link: KDB Article ID 000089563)