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samples: drivers: mbox: enable run on s32z
The hardware MRU on SoC S32Z supports ping-pong loopback data on a MBOX channel within one core. The expected received data must match the sent data when running loopback tests Signed-off-by: Cong Nguyen Huu <cong.nguyenhuu@nxp.com>
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‎samples/drivers/mbox_data/CMakeLists.txt

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@@ -14,7 +14,8 @@ if(CONFIG_BOARD_MIMXRT1170_EVK_MIMXRT1176_CM7 OR
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CONFIG_BOARD_FRDM_MCXN947_MCXN947_CPU0 OR
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CONFIG_BOARD_MCX_N9XX_EVK_MCXN947_CPU0 OR
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CONFIG_BOARD_MIMXRT1180_EVK_MIMXRT1189_CM33 OR
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CONFIG_BOARD_LPCXPRESSO55S69_LPC55S69_CPU0)
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CONFIG_BOARD_LPCXPRESSO55S69_LPC55S69_CPU0 OR
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CONFIG_BOARD_S32Z2XXDC2)
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message(STATUS "${BOARD}${BOARD_QUALIFIERS} compile as Main in this sample")
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else()
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message(FATAL_ERROR "${BOARD}${BOARD_QUALIFIERS} is not supported for this sample")

‎samples/drivers/mbox_data/README.rst

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@@ -13,6 +13,9 @@ It can be used only with mbox driver which supports data transfer mode.
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Sample will ping-pong up to 4 bytes of data between two cores via two mbox channels.
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After each core receives data, it increments it by one and sends it back to other core.
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Sample also supports ping-pong loopback data on a mbox channel within one core,
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if the hardware allows (eg. Hardware MRU on SoC S32Z).
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Building and Running
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********************
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@@ -54,6 +57,14 @@ Building the application for frdm_mcxn947/mcxn947/cpu0
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:goals: debug
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:west-args: --sysbuild
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Building the application for the test loopback, example for s32z2xxdc2/s32z270/rtu0
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===================================================================================
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.. zephyr-app-commands::
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:zephyr-app: samples/drivers/mbox_data/
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:board: s32z2xxdc2/s32z270/rtu0
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:goals: build flash
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Sample Output
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=============
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@@ -102,3 +113,20 @@ serial port, one is the main core another is the remote core:
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Server receive (on channel 3) value: 98
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Server send (on channel 2) value: 99
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mbox_data Server demo ended.
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Results from running the test loopback, example for s32z2xxdc2/s32z270/rtu0:
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.. code-block:: console
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*** Booting Zephyr OS build v4.1.0-3644-ga4ee89a96597 ***
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mbox_data Client demo started
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Client send (on channel 0) value: 0
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Client received (on channel 0) value: 0
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Client send (on channel 0) value: 1
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Client received (on channel 0) value: 1
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...
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Client send (on channel 0) value: 98
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Client received (on channel 0) value: 98
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Client send (on channel 0) value: 99
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Client received (on channel 0) value: 99
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mbox_data Client demo ended

‎samples/drivers/mbox_data/boards/s32z2xxdc2_s32z270_rtu0.overlay

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@@ -0,0 +1,18 @@
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/*
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* Copyright 2025 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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mbox-consumer {
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compatible = "vnd,mbox-consumer";
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mboxes = <&mru0 0>, <&mru0 0>;
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mbox-names = "tx", "rx";
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};
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};
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&mru0 {
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rx-channels = <1>;
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status = "okay";
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};

‎samples/drivers/mbox_data/boards/s32z2xxdc2_s32z270_rtu1.overlay

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/*
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* Copyright 2025 NXP
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/ {
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mbox-consumer {
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compatible = "vnd,mbox-consumer";
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mboxes = <&mru4 0>, <&mru4 0>;
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mbox-names = "tx", "rx";
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};
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};
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&mru4 {
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rx-channels = <1>;
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status = "okay";
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};

‎samples/drivers/mbox_data/sample.yaml

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sample:
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name: MBOX Data IPC sample
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common:
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sysbuild: true
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tags: mbox
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filter: dt_compat_enabled("vnd,mbox-consumer")
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tests:
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sample.drivers.mbox_data.real_hw:
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filter: dt_compat_enabled("vnd,mbox-consumer")
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sysbuild: true
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integration_platforms:
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- mimxrt1160_evk/mimxrt1166/cm7
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- lpcxpresso55s69/lpc55s69/cpu0
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- "Client received .+ value: 97"
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- "Client send .+ value: 98"
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- "Client received .+ value: 99"
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sample.drivers.mbox_data.loopback:
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platform_allow:
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- s32z2xxdc2/s32z270/rtu0
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- s32z2xxdc2/s32z270/rtu1
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- s32z2xxdc2@D/s32z270/rtu0
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- s32z2xxdc2@D/s32z270/rtu1
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harness: console
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harness_config:
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type: multi_line
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ordered: false
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regex:
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- "Client send .+ value: 0"
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- "Client received .+ value: 0"
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- "Client send .+ value: 1"
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- "Client received .+ value: 1"
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- "Client send .+ value: 41"
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- "Client received .+ value: 41"
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- "Client send .+ value: 42"
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- "Client received .+ value: 42"
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- "Client send .+ value: 98"
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- "Client received .+ value: 98"
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- "Client send .+ value: 99"
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- "Client received .+ value: 99"

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