i.MX8MQ EVK cannot boot from SD card and eMMC

[Derek0902]

Hi,

I use the customized board and the Linux version is 6.1.36-2.1.0. Then I use core-image-minimal as boot image. When the board is booting up, it cannot enter kernel  and stop at this log.

SD card :

eMMC :

The attached file is the complete log of booting from eMMC.

Can anyone provide the correct boot log?

Thanks & Regards,

Derek Lin

[Harvey021]

Hi @Derek0902 

Please find the attachment for both boot log of SD and eMMC.

Regards

Harvey

[Derek0902]

Hi @Harvey021 ,

Thanks for your help!

I have a question that is possible to decrease CPU frequency in u-boot? Is it possible to solve the boot problem?

Thanks & Regards,

Derek Lin

[Harvey021]

Hi 

Can't see boot problem from the CPU Freq. About decreasing Freq, you can have a try to modify "int clock_init" from clock_imx8mq.c in uboot.

Regards

Harvey

[Derek0902]

Hi @Harvey021 ,

I found that it only support two grades. Can it be modified lower frequency than 800MHz?

And I have disabled almost all the device that I don't need or unusual. It stop at "waiting for root device". The roofs doesn't be mounted.  I think that It doesn't seem to be related to CPU frequency. What could be the problem?

Regards,

Derek Lin