Re: [I] [HELP] SD Card imxrt_dmapreflight: dcache unaligned buffer:0x202458b8 end:0x20245ab7 [nuttx]

Sat, 17 May 2025 00:55:07 -0700 


snikeguo commented on issue #16159:
URL: https://github.com/apache/nuttx/issues/16159#issuecomment-2888201707

   @keever50 
   solution：
   
   CONFIG_FAT_DMAMEMORY=y
   CONFIG_GRAN=y
   CONFIG_STM32H7_SDMMC_IDMA=y
   CONFIG_ARMV7M_DCACHE_WRITETHROUGH=n   see:armv7m mpu document
   
   in stm32_dmarecvsetup:
   #if defined(CONFIG_ARCH_HAVE_SDIO_PREFLIGHT)
     // DEBUGASSERT(stm32_dmapreflight(dev, buffer, buflen) == 0);
   #endif
   
   
![Image](https://github.com/user-attachments/assets/d64c839e-b01d-40c2-953c-1e68db26c89b)


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