matter: samples: Restore IPC thread priority in Matter samples

We noticed that IPC priority on nRF5340 is not set by default.
We need to set it in DTS to be sure that the IPC thread does not
collide with other threads.

Signed-off-by: Arkadiusz Balys <arkadiusz.balys@nordicsemi.no>

applications/matter_weather_station/configuration/thingy53_nrf5340_cpuapp/app.overlay

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  zephyr,user {
  battery-charge-gpios = <&gpio1 0 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;
@@ -24,6 +26,11 @@
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 &i2c1 {
  bme688@76 {
  compatible = "bosch,bme680";

samples/matter/light_bulb/boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
@@ -26,6 +28,11 @@
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 &pwm0 {
  pinctrl-0 = <&pwm0_default_alt>;
  pinctrl-1 = <&pwm0_sleep_alt>;

samples/matter/light_bulb/boards/nrf7002dk_nrf5340_cpuapp.overlay

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
@@ -26,6 +28,11 @@
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 &pwm0 {
  pinctrl-0 = <&pwm0_default_alt>;
  pinctrl-1 = <&pwm0_sleep_alt>;

samples/matter/light_switch/boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -4,12 +4,19 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 /* Disable unused peripherals to reduce power consumption */
 &adc {
  status = "disabled";

samples/matter/light_switch/boards/nrf7002dk_nrf5340_cpuapp.overlay

@@ -4,8 +4,15 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
+
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};

samples/matter/lock/boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -4,12 +4,19 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 /* Disable unused peripherals to reduce power consumption */
 &adc {
  status = "disabled";

samples/matter/lock/boards/nrf7002dk_nrf5340_cpuapp.overlay

@@ -4,8 +4,15 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
+
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};

samples/matter/template/boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -4,12 +4,19 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 /* Disable unused peripherals to reduce power consumption */
 &adc {
  status = "disabled";

samples/matter/template/boards/nrf7002dk_nrf5340_cpuapp.overlay

@@ -4,8 +4,15 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
  };
 };
+
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};

samples/matter/window_covering/boards/nrf5340dk_nrf5340_cpuapp.overlay

@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
  */
 
+#include <zephyr/dt-bindings/ipc_service/static_vrings.h>
+
 / {
  chosen {
  nordic,pm-ext-flash = &mx25r64;
@@ -29,6 +31,11 @@
  };
 };
 
+/* Set IPC thread priority to the highest value to not collide with other threads. */
+&ipc0 {
+ zephyr,priority = <0 PRIO_COOP>;
+};
+
 /* Disable unused peripherals to reduce power consumption */
 &adc {
  status = "disabled";