DTCM cache DMA issue

[_EFrie]

Device is STM32F765VI.

I'm using DMA to fill data allocated from DTCM, for some reason this seems to be caching.

My understanding is that DTCM doesn't need cache management, help me if wrong here.  If I don't enable the data cache everything works as expected here.

Ultimately, I'm using the QSPI peripheral, DMA2 stream 2, target address is less than 0x20020000, I seem to be missing some core understanding here.

 

[_EFrie]

Never mind, I didn't have the DMA write buffer in DTCM, please disregard question.