Error while downloading Yocto on i.MX6UL custom board

[punitkumar]

Hi

I was downloading modified Yocto Image to my i.MX6UL custom boards, all but one works.

The one which failed struct on the step  "Jumping to OS image. ". But all other boards running well (Which means the image and the process is okey).

What can be the probable issues?

--

Punit Kumar

[Info: Also with this same board, the HID port appears after some time even when the board is in Internal Boot Mode]

[find attached the log of the mfgtool.]

Original Attachment has been moved to: MfgTool.log.zip

[Yuri]

Hello,

 Please check carefully Your design regarding the Checklist and bring-up issues.

Please refer to section 4 (Avoiding Board Bring-up Problems) of “Hardware Development

Guide for i.MX 6 UltraLite …”

http://cache.nxp.com/files/32bit/doc/user_guide/IMX6ULHDG.pdf 

Note, recent design checklist may be found at

i.MX6UL Hardware design checklist 

Next, please check memory, using the stress tool :

https://community.nxp.com/docs/DOC-105652 

Have a great day,
Yuri

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[punitkumar]

Hi Yuri

Thanks for your response

DDR Stress Test failed. Test output is --

============================================

DDR Stress Test Iteration 1
Current Temperature: 41
============================================

DDR Freq: 198 MHz
t0.1: data is addr test
Address of failure: 0x80002140
Data was: 0x80002150
But pattern should match address
Error: failed to run stress test!!!

How to troubleshoot now?

--

Punit Kumar

[Yuri]

Hello,

  from the memory test log :

t0.1: data is addr test
Address of failure: 0x80002140
Data was: 0x80002150
But pattern should match address

This looks like a hardware bug. Please verify board : if 4-th address or data bit 0x10 

is short-circuited with other signal.

Regards,

Yuri.

[punitkumar]

Thanks YuriMuhin_ng‌ for your help, but i think it is near impossible to find and solve the problem of if DQ4/CA4 is shorted (to high) as the traces are not exposed.

But Thank you for the info

--

Punit Kumar