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johnnyc
johnnyc
Associate II
March 9, 2023
Question

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

  • March 9, 2023
  • 1 reply
  • 983 views

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?

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1 reply

Olivier GALLIEN
Olivier GALLIEN
ST Technical Moderator
March 16, 2023

Hi @johnnyc​ ,

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

Thanks

Olivier

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