We are trying to enable using dma for rx in uart 4. This is the bindings we changed:
dma-names = “rx”, “tx”;
status = “okay”;
We see a strange behaviour when using flow control. The rts pin of the jetson not rising to 3.3V. We test ttyTHS2 in the development kit and everything worked. In addition, the dma mode for rx was already configured. We are wondering why rx was not enabled for dma in uart 4 and if our issue is known.