samples: openthread: net: shell: Add NXP rcp host configuration

Add the NXP shell configuration for openthread RCP host

Signed-off-by: Jamel Arbi <jamel.arbi@nxp.com>

samples/net/openthread/shell/README.rst

@@ -15,11 +15,38 @@ Building and Running
 
 Verify that the board and chip you are targeting provide IEEE 802.15.4 support.
 
-For instance you can use Nordic's nRF52840 DK.
+There are configuration files for different boards and setups in the shell directory:
+
+- :file:`prj.conf`
+  Generic config file.
+
+- :file:`overlay-ot-rcp-host-nxp.conf`
+  This overlay config enables support of OpenThread RCP host running on NXP chips over IMU interface.
+
+Build shell application like this:
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/net/openthread/shell
+   :board: <board to use>
+   :conf: <config file to use>
+   :goals: build
+   :compact:
+
+Example building for Nordic's nRF52840 DK.
 
 .. zephyr-app-commands::
    :zephyr-app: samples/net/openthread/shell
    :board: nrf52840dk/nrf52840
+   :conf: "prj.conf"
+   :goals: build
+   :compact:
+
+Example building for NXP's RW612 FRDM (RCP host).
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/net/openthread/shell
+   :board: frdm_rw612
+   :conf: "prj.conf overlay-ot-rcp-host-nxp.conf"
    :goals: build
    :compact:
 

samples/net/openthread/shell/overlay-ot-rcp-host-nxp.conf

@@ -0,0 +1,51 @@
+#
+# Copyright 2025, NXP
+#
+
+# OS
+CONFIG_MAIN_STACK_SIZE=8192
+
+# CPP library
+CONFIG_CPP=y
+
+# IMU & FW loader
+CONFIG_NXP_RF_IMU=y
+CONFIG_NXP_FW_LOADER=y
+
+# Shell
+CONFIG_SHELL_ARGC_MAX=26
+CONFIG_SHELL_CMD_BUFF_SIZE=512
+CONFIG_SHELL_STACK_SIZE=5120
+
+# Enable Openthread RCP host interface
+CONFIG_HDLC_RCP_IF=y
+CONFIG_OPENTHREAD_MANUAL_START=y
+
+# Enable OpenThread features set
+CONFIG_OPENTHREAD_THREAD_VERSION_1_3=y
+CONFIG_OPENTHREAD_DHCP6_SERVER=y
+CONFIG_OPENTHREAD_COMMISSIONER=y
+CONFIG_OPENTHREAD_BORDER_AGENT=y
+CONFIG_OPENTHREAD_BORDER_ROUTER=y
+CONFIG_OPENTHREAD_UDP_FORWARD=y
+CONFIG_OPENTHREAD_ENABLE_SERVICE=y
+CONFIG_OPENTHREAD_EXTERNAL_HEAP=y
+CONFIG_OPENTHREAD_PING_SENDER=y
+CONFIG_OPENTHREAD_SLAAC=y
+CONFIG_OPENTHREAD_SETTINGS_RAM=y
+CONFIG_OPENTHREAD_NUM_MESSAGE_BUFFERS=256
+CONFIG_OPENTHREAD_COAP=y
+CONFIG_OPENTHREAD_JOINER=y
+CONFIG_OPENTHREAD_REFERENCE_DEVICE=y
+CONFIG_OPENTHREAD_DHCP6_CLIENT=y
+CONFIG_OPENTHREAD_LINK_METRICS_INITIATOR=y
+CONFIG_OPENTHREAD_LINK_METRICS_SUBJECT=y
+CONFIG_OPENTHREAD_DUA=y
+CONFIG_OPENTHREAD_MLR=y
+CONFIG_OPENTHREAD_ECDSA=y
+CONFIG_OPENTHREAD_DNS_CLIENT=y
+CONFIG_OPENTHREAD_DNSSD_SERVER=y
+CONFIG_OPENTHREAD_SRP_CLIENT=y
+CONFIG_OPENTHREAD_SRP_SERVER=y
+CONFIG_OPENTHREAD_MAC_FILTER=y
+CONFIG_OPENTHREAD_IP6_FRAGM=y

samples/net/openthread/shell/sample.yaml

@@ -15,3 +15,12 @@ tests:
       - nrf52840dongle/nrf52840
     integration_platforms:
       - nrf52840dk/nrf52840
+  sample.net.openthread.shell.rw612_openthread_rcp_host:
+    build_only: true
+    extra_args:
+      # Disabling monolithic since CI environment doesn't use blobs
+      - CONFIG_NXP_MONOLITHIC_NBU=n
+      - EXTRA_CONF_FILE="overlay-ot-rcp-host-nxp.conf"
+    platform_allow:
+      - frdm_rw612
+      - rd_rw612_bga