/* SPDX-License-Identifier: Apache-2.0 */ &dmac { status = "okay"; }; dut: &sercom1 { status = "okay"; compatible = "atmel,sam0-uart"; current-speed = <115200>; #address-cells = <1>; #size-cells = <0>; /* Internally loop-back TX and RX on PAD0 */ rxpo = <0>; txpo = <0>; /* Configure DMA channels for async operation */ dmas = <&dmac 0 6>, <&dmac 1 7>; dma-names = "rx", "tx"; }; &sercom2 { /* configure DMA channels for async operation */ dmas = <&dmac 30 8>, <&dmac 31 9>; dma-names = "rx", "tx"; };