Boot stops on RPi4 yocto/hardknott (u-boot 2021.01)

Morten Bruun morten.bruun at
Fri May 28 08:24:46 CEST 2021


I'm working on a project where we recently upgraded to Yocto/hardknott.

After the upgrade to U-Boot 2021.01 the boot stops at

switch to partitions #0, OK
mmc0 is current device
Scanning mmc 0:1...

and then nothing more happens. Sometimes resetting power will cause the
RPi4 to boot - but not always.

I then downgraded to U-Boot 2020.07 and the RPi4 boots every time.

I will be looking at the commits between 2020.07 and 2021.01 - but I'm not
really sure what to look for - any ideas?

Best regards

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