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The HAL DMA functions enable SDMMC interrupts before fully resetting the peripheral, and this can lead to a DTIMEOUT IRQ during the initialisation of the DMA transfer, which then clears out the DMA state and leads to the read/write not working at all. The DTIMEOUT is there from previous SDMMC DMA transfers, even those that succeeded, and is of duration ~180 seconds, which is 0xffffffff / 24MHz (default DTIMER value, and clock of peripheral). To work around this issue, fully reset the SDMMC peripheral before calling the HAL SD DMA functions. Fixes issue #4110.