13022591351 commented on PR #19462:
URL: https://github.com/apache/nuttx/pull/19462#issuecomment-5005756803

   > @raiden00pl PTAL
   > 
   > @13022591351 Do you know if other STM32 family (F7, H5, etc) also require 
this improvement?
   
   Next Monday I'll analyze it using LLM tools. It's possible that even after 
merging, 4-bit eMMC still won't be implemented. I'm developing and testing on 
the PX4/NuttX branch, but the PX4 commit process requires distributed 
execution. For a complete reproduction of 4-bit eMMC on the H7 platform, please 
refer to https://github.com/13022591351/PX4-NuttX/tree/pr-fix-stm32h7-emmc_4wire
   
   After merging this commit, I will continue to check the relevant code in 
drivers/mmcsd/mmcsd_sdio.c.


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