STM32_MDMA_MAX_BURST
dd->max_burst = STM32_MDMA_MAX_BURST;
if (src_maxburst * src_addr_width > STM32_MDMA_MAX_BURST ||
dst_maxburst * dst_addr_width > STM32_MDMA_MAX_BURST) {
STM32_MDMA_MAX_BURST);