boards: nordic: nrf54h20dk: add mbox for event report

cpusec will raise an mbox signal when an event report
is generated. This is done when a peripheral triggers
an error event to cpusec that cannot be directly passed
to cpuapp or cpurad.

Define the mbox and enable the IRQ for the corresponding
bell in the bellboard.

Signed-off-by: Håkon Amundsen <[email protected]>

Author: hakonfam

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20-ipc_conf.dtsi

@@ -6,6 +6,18 @@
 
 / {
 	ipc {
+		cpusec_cpuapp_event_report: event-report-1-2 {
+			compatible = "vnd,mbox-consumer";
+			mboxes = <&cpuapp_bellboard 1>;
+			mbox-names = "event_channel";
+		};
+
+		cpusec_cpurad_event_report: event-report-1-3 {
+			compatible = "vnd,mbox-consumer";
+			mboxes = <&cpurad_bellboard 1>;
+			mbox-names = "event_channel";
+		};
+
 		cpusec_cpuapp_ipc: ipc-1-2 {
 			compatible = "nordic,ironside-call";
 			status = "disabled";

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpuapp.dts

@@ -118,12 +118,13 @@
 	interrupt-names = "irq0";
 	/* irq0:
 	 *  - 0:  cpuapp-cpusec
+	 *  - 1:  cpuapp-cpusec
 	 *  - 6:  cpuapp-cpusys
 	 *  - 13: cpuapp-cpuppr
 	 *  - 14: cpuapp-cpuflpr
 	 *  - 18: cpuapp-cpurad
 	 */
-	nordic,interrupt-mapping = <0x00046041 0>;
+	nordic,interrupt-mapping = <0x00046043 0>;
 };
 
 &cpurad_bellboard {

boards/nordic/nrf54h20dk/nrf54h20dk_nrf54h20_cpurad.dts

@@ -40,8 +40,8 @@
 	status = "okay";
 	interrupts = <96 NRF_DEFAULT_IRQ_PRIORITY>;
 	interrupt-names = "irq0";
-	/* irq0: 0: cpurad-cpusec, 6: cpurad-cpusys, 12: cpurad-cpuapp */
-	nordic,interrupt-mapping = <0x00001041 0>;
+	/* irq0: 0: cpurad-cpusec, 1: cpurad-cpusec, 6: cpurad-cpusys, 12: cpurad-cpuapp */
+	nordic,interrupt-mapping = <0x00001043 0>;
 };
 
 &cpuapp_bellboard {