Arria 10 Dev Kit - DDR4 calibration failed

[Altera_Forum]

Hi everyone, 

 I can't get the DDR4 module that comes with the Arria 10 Dev Kit to work. When I configure the DDR4 design using BTS, I get "DDR4 calibration failed, test won't work" error message. All other examples working fine (Flash/GPIO, FMC loopback and DDR3). Is there any configuration / setting that I am not ware of?  Thanks

[Altera_Forum]

If DDR3 works, DDR4 should work. Have you swapped out the memory in the Hi/Lo port?

[Altera_Forum]

--- Quote Start ---  If DDR3 works, DDR4 should work. Have you swapped out the memory in the Hi/Lo port?  --- Quote End ---    Yes, I did swap out the memory module.

[Altera_Forum]

BTS should work out of the box. If it's not, I'd contact Intel for a replacement.

[Altera_Forum]

Check if the following setting is ON: 

 set_global_assignment -name RELEASE_CLEARS_BEFORE_TRI_STATES ON  If it is as shown above, then you need to change it to OFF and then try again  set_global_assignment -name RELEASE_CLEARS_BEFORE_TRI_STATES OFF

[Suresh]

DDR4 calibration failed in A10 dev kit out of the box. Following is the calibration report from External Memory Interface Toolkit

+---------------------------------------+

; Calibration ; Fail ;
; Initial failing group ; 2 ;
; Initial failing calibration stage ; Write Per-bit Deskew ;

+---------------------------------------+
; Calibration Status Per Group ;
+-------+--------+----------------------+
; Group ; Status ; Error Stage ;
+-------+--------+----------------------+
; 0 ; Pass ; N/A ;
; 1 ; Pass ; N/A ;
; 2 ; Fail ; Write Per-bit Deskew ;
; 3 ; Fail ; Write Per-bit Deskew ;
; 4 ; Fail ; Write Per-bit Deskew ;
; 5 ; Fail ; Write Per-bit Deskew ;
; 6 ; Fail ; Write Per-bit Deskew ;
; 7 ; Fail ; Write Per-bit Deskew ;
; 8 ; Fail ; Write Per-bit Deskew ;
+-------+--------+----------------------+

Calibration passed for group 0 and 1 but failed for rest of the groups even after assigning RELEASE_CLEARS_BEFORE_TRI_STATES OFF