imx8dx scu can not start

[songhongliang]

HI I am using imx8dx and 8100cces pmic, Now sometimes when the power is on, VCC_CPU has no voltage. Cause the system to fail to run. How to deal with this phenomenon, can you give me some ideas. The power-on sequence has been checked. Thanks

[igorpadykov]

Hi hongliang

one can try to rebuild all image from scratch: first use latest RPA tool and DDR test

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8-8X-Family-DDR-Tools-Release/ta-p/...

Linux documentation link:

https://www.nxp.com/design/software/embedded-software/i-mx-software/embedded-linux-for-i-mx-applicat...

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX8X-5-4-24-bootloader-customization-a...

Best regards
igor

[songhongliang]

HI,

I want to know what code is running before SCU, and is there any way to determine which step the code has run before scu and scu

Thanks

[songhongliang]

HI 

I have tried to recompile, and I measured the IIC of pmic (8100cces). When the VCC_CPU cannot be powered on, the IIC communication does not have it. In other words, there is no way to ensure that the code runs to SCFW. In this case How to deal with it, SCU does not have any log

Thanks

[igorpadykov]

on last suggested link (for Bootloader customization) one can find how

enable SCU serial port debugging information.

Best regards
igor