STM32F7: default CONFIG_STM32F7_DMACAPABLE to 'n'. STM32F7 does not have CCM...
STM32F7: default CONFIG_STM32F7_DMACAPABLE to 'n'. STM32F7 does not have CCM RAM but DTCM, so this option does not need to enabled. DTCM RAM is DMA-able through CPU AHBS bus.
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