IWDG not able to trigger reset in U-Boot/Kernel

[johnnyc]

On an STM32MP157C the IWDG is setup correctly, but when I trigger an endless loop in U-Boot or a panic in the Kernel, after the timeout the reset does not work. All I know is that the debugger shows a Vector catch. In OPTEE OS the reset works. Is this due to the fact, that OPTEE OS is in trusted world and U-Boot isn't?

[Olivier GALLIEN]

Hi @johnnyc​ ,

Do you have any log to share in case of reset failure / vector catch ?

Thanks

Olivier