davids5 commented on pull request #1544:
URL: https://github.com/apache/incubator-nuttx/pull/1544#issuecomment-671897714


   @fjpanag I see it listed in RM0399 STM32H745/755 and STM32H747/757 advanced 
ArmĀ®-based
   32-bit MCUs Rev. 2
   
   On a side note, I have discovered some [issues with the massive over 
shoot](https://github.com/PX4/Firmware/pull/15001/commits/cb6322f092c36d33c776fc05a4ace095a9773d55)
 on SPI. (way out of spec, MAX VIH to the receiving IC's) I am sure there are 
others. This is total a HW use case dependent setting and effects EMI, 
crosstalk etc.
   
    I think we need to do a pass on ALL the pin mux files to removes the 
slew-rate setting from the pin maps. Unfortunately has massive ripple effects 
and will need to be done in such a way to allow an override, and not break all 
the boards.


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