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Question about Dual-Lite CPU boot up issue.

Question asked by edwin rose on May 8, 2014
Latest reply on May 13, 2014 by igorpadykov

Hi experts,


I have a i.MX6 boot-up issue for Dual-lite CPU.


With the same PCB layout, I use four different CPUs.


1. Quad-Core Automotive (MCIMX6Q6AVT10AC)

2. Quad-Core Extend Commercial (MCIMX6Q5EYM10AC)

3. Dual-Core Automotive (MCIMX6D6AVT10AC)

4. Dual-Lite-Core Extend Commercial (MCIMX6U5EVM10AB)


And the power strap are followed AN4397 Hardware Design guide.


Now item 1~3 can boot up successfully, but item 4 (Dual-lite CPU) will boot up randomly.

I have use DDR3 calibration tool to get the ddr parameters and put into u-boot image.

But the issue still appear, the system will hang on "Hit any key to stop autoboot: 0" (please see the attached picture).


Does anybody has the similiar issue? Please give me some directions to solve this issue.


Thanks for your comments.