diff --git a/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_common.dtsi b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_common.dtsi
new file mode 100644
index 00000000000..9aa338deaad
--- /dev/null
+++ b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_common.dtsi
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+&pinctrl {
+	uart137_default_alt: uart137_default_alt {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 6)>,
+				<NRF_PSEL(UART_RX, 0, 7)>;
+		};
+	};
+
+	uart137_sleep_alt: uart137_sleep_alt {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 0, 6)>,
+				<NRF_PSEL(UART_RX, 0, 7)>;
+			low-power-enable;
+		};
+	};
+};
+
+dut: &uart137 {
+	status = "okay";
+	pinctrl-0 = <&uart137_default_alt>;
+	pinctrl-1 = <&uart137_sleep_alt>;
+	pinctrl-names = "default", "sleep";
+	current-speed = <115200>;
+};
diff --git a/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpuapp.overlay b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
new file mode 100644
index 00000000000..be5897fd051
--- /dev/null
+++ b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpuapp.overlay
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include "nrf54h20dk_nrf54h20_common.dtsi"
+
+&dut {
+	memory-regions = <&cpuapp_dma_region>;
+};
diff --git a/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpurad.overlay b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpurad.overlay
new file mode 100644
index 00000000000..beca628a2f0
--- /dev/null
+++ b/tests/drivers/uart/uart_async_api/boards/nrf54h20dk_nrf54h20_cpurad.overlay
@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include "nrf54h20dk_nrf54h20_common.dtsi"
+
+&dut {
+	memory-regions = <&cpurad_dma_region>;
+};