keever50 commented on issue #16159:
URL: https://github.com/apache/nuttx/issues/16159#issuecomment-2838468401

   Little update that is probably very important.
   
   Disabling IDMA will give you overrun warnings. It does not explain what will 
happen if you ignore these.
   If you ignore the warnings and clock the SDMMC too fast, it can cause 
crashes/panics.
   
   If you have kernel panics, try to increase the clock divider under board.h.
   For example in the STM32H7:
   
   
![Image](https://github.com/user-attachments/assets/6c4235e8-fee1-464f-8ee9-2b79caf741df)
   I increased the clock divider to 8. It was lower previously, which caused 
panics.


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