diff --git a/bl54l15_radio0.overlay b/bl54l15_radio0.overlay
new file mode 100644
index 0000000..2a662cd
--- /dev/null
+++ b/bl54l15_radio0.overlay
@@ -0,0 +1,43 @@
+&uart20 {
+    compatible = "nordic,nrf-uarte";
+    status = "okay";
+    current-speed = <1000000>;
+    hw-flow-control;
+};
+
+&pinctrl {
+	uart20_default: uart20_default {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 1, 7)>,
+				<NRF_PSEL(UART_RTS, 1, 4)>;
+		};
+		group2 {
+			psels = <NRF_PSEL(UART_RX, 1, 6)>,
+				<NRF_PSEL(UART_CTS, 1, 5)>;
+			bias-pull-up;
+		};
+	};
+
+	uart20_sleep: uart20_sleep {
+		group1 {
+			psels = <NRF_PSEL(UART_TX, 1, 7)>,
+				<NRF_PSEL(UART_RX, 1, 6)>,
+				<NRF_PSEL(UART_RTS, 1, 4)>,
+				<NRF_PSEL(UART_CTS, 1, 5)>;
+			low-power-enable;
+		};
+	};
+};
+
+/ {
+	chosen {
+        //zephyr,console = &uart20;
+		//zephyr,shell-uart = &uart20;
+		//zephyr,uart-mcumgr = &uart0;
+		//zephyr,bt-mon-uart = &uart0;
+		zephyr,bt-c2h-uart = &uart20;
+	};
+};
+&power {
+    status = "okay";
+};
\ No newline at end of file
diff --git a/prj.conf b/prj.conf
index e889ba4..7e40f8b 100644
--- a/prj.conf
+++ b/prj.conf
@@ -7,6 +7,7 @@ CONFIG_UART_INTERRUPT_DRIVEN=y
 CONFIG_BT=y
 CONFIG_BT_CTLR=y
 CONFIG_BT_LL_SOFTDEVICE=y
+CONFIG_BT_CTLR_TX_PWR_PLUS_8=y      # or _PLUS_8, _MINUS_4, …
 
 CONFIG_BT_HCI_RAW=y
 CONFIG_BT_HCI_RAW_H4=y