Category: Specifications
Tools: Quartus® Prime
Device: Arria® 10


Since it is bi-directional LVDS, you should use Bus LVDS (BLVDS) as your FPGA.

See Application Note 522 below.

(reference)
AN522: Implementing Bus LVDS Interface in Supported Altera Device Families
https://www.altera.com/en_US/pdfs/literature/an/an522.pdf
(Search for Design Example Guidelines for Arria 10 Devices.)

Specifically, make the altera_gpio bidirectional and set the I/O Standard to Differential 1.8-V SSTL Class I or Class II.
Now you can use it without using 2Line.