ccimx8mn : Stuck in Infinite booting loop


I have Connectcore digi im.x8mn EVK.
I have recently started to face issue where-in the system post updating image is continuously stuck in infinite boot in u-boot.
It starts booting , loads kernel and after sometime again jumps on to u-boot and starts booting again.
I am flashing the base image generated by yocto.

Uboot version:
U-Boot dub-2018.03-r5.3+gedd9ebafae (Oct 23 2020 - 12:26:40 +0000)

Starts rebooting exactly after this message:
Welcome to Digi Embedded Yocto 3.0-r2 (zeus)!

Have you enabled watchdog? Can you try stock images?

I had today one UL6express card that do same…

problem was active usb cabel before Y-cabel
(orig usb Y-cabel was too short and I try to make it longer )

so card didnt get enough power and make reboot.

check your power source.

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