<p></p>
<blockquote>
<p>The dma attribute in the common uart configuration struct should be called dma_stream, to match what is in the board configurations.</p>
</blockquote>
<p>it's the <code>dma</code> that is used in the uart implementation, so ok to change the boards configurations. But you still have to keep <code>dma_chan</code>:</p>
<p><a href="https://github.com/RIOT-OS/RIOT/blob/f81dda2174cfc48febcd538ee4457ed433c69c8c/cpu/stm32_common/periph/uart.c#L349">https://github.com/RIOT-OS/RIOT/blob/f81dda2174cfc48febcd538ee4457ed433c69c8c/cpu/stm32_common/periph/uart.c#L349</a></p>

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