Pins must meet Altera requirements for 3.3, 3.0, and 2.5-V interfaces? What to do?

Hi,

I am getting below warnings on LCD data pins design for cyclone 4 device.I have also enabled the PCI clamp diode as per AN447 but still not able to resolve .could you please assist whats wrong here.

"Warning (169177): 8 pins must meet Altera requirements for 3.3-, 3.0-, and 2.5-V interfaces. For more information, refer to AN 447: Interfacing Cyclone IV E Devices with 3.3/3.0/2.5-V LVTTL/LVCMOS I/O Systems"

After enabling PCI doide as given below still getting same warnings.

LCD_DATA[0] Location PIN_Y2 Yes

LCD_DATA[0] I/O Standard 3.3-V LVTTL Yes

LCD_DATA[0] PCI I/O On Yes

Whereas as AN447 says its enabled by default : "If the input I/O standard is 3.3-V LVTTL, 3.3-V LVCMOS, 3.0-V LVTTL, 3.0-V LVCMOS, 2.5-V LVTTL/LVCMOS, PCI, or PCI-X, the PCI clamp diode is enabled by default in the Quartus II software.

Could you please suggest how I can remove these warnings.

Thanks,

Gagan