diff --git a/samples/net/openthread/coprocessor/boards/tlsr9518adk80d.overlay b/samples/net/openthread/coprocessor/boards/tlsr9518adk80d.overlay
new file mode 100644
index 00000000000..9eadcad9c1b
--- /dev/null
+++ b/samples/net/openthread/coprocessor/boards/tlsr9518adk80d.overlay
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2021 Telink Semiconductor
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/ {
+	chosen {
+		zephyr,ot-uart = &uart0;
+		zephyr,console = &uart1;
+	};
+};
+
+&uart0 {
+	status = "okay";
+	current-speed = <57600>;
+	pinctrl-0 = <&uart0_tx_pb2 &uart0_rx_pb3>;
+};
+
+&uart1 {
+	status = "okay";
+	current-speed = <115200>;
+	pinctrl-0 = <&uart1_tx_pc6 &uart1_rx_pc7>;
+};
diff --git a/samples/net/openthread/coprocessor/sample.yaml b/samples/net/openthread/coprocessor/sample.yaml
index 63d69da8a42..76414ab5aaf 100644
--- a/samples/net/openthread/coprocessor/sample.yaml
+++ b/samples/net/openthread/coprocessor/sample.yaml
@@ -9,7 +9,7 @@ sample:
 tests:
   sample.net.openthread.coprocessor:
     build_only: true
-    platform_allow: nrf52840dk_nrf52840 nrf52833dk_nrf52833
+    platform_allow: nrf52840dk_nrf52840 nrf52833dk_nrf52833 tlsr9518adk80d
     tags: ci_build
   sample.net.openthread.coprocessor.usb:
     build_only: true
@@ -19,6 +19,6 @@ tests:
                 DTC_OVERLAY_FILE="usb.overlay"
   samples.openthread.coprocessor.rcp:
     build_only: true
-    platform_allow: nrf52840dk_nrf52840 nrf52833dk_nrf52833
+    platform_allow: nrf52840dk_nrf52840 nrf52833dk_nrf52833 tlsr9518adk80d
     tags: ci_build
     extra_args: OVERLAY_CONFIG=overlay-rcp.conf