IMX6ULLevk basic image does not get response from keyboard when connected

[omerg]

I am trying to work on a basic image using CLI but for unknown reason, i stopped receiving keyboard inputs and cannot work with the board, I am using Putty and I'm connected on the uart debug mode and before and after the boot sequence any key press doesn't do anything, What can i do? 

[igorpadykov]

Hi Omer

one can try to test ddr memory :

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-6-7-DDR-Stress-Test-Tool/ta-p/11082...

and update uboot dcd header with new ddr calibration coefficients found from test

https://source.codeaurora.org/external/imx/uboot-imx/tree/board/freescale/mx6ullevk/imximage.cfg?h=i...

Best regards
igor

[omerg]

thanks ill try it