diff --git a/arch/arm/boot/dts/stm32mp131.dtsi b/arch/arm/boot/dts/stm32mp131.dtsi
index dd35a607073d..47dc07abe4e3 100644
--- a/arch/arm/boot/dts/stm32mp131.dtsi
+++ b/arch/arm/boot/dts/stm32mp131.dtsi
@@ -33,6 +33,8 @@
 		optee {
 			method = "smc";
 			compatible = "linaro,optee-tz";
+			interrupt-parent = <&intc>;
+			interrupts = <GIC_SPI 134 IRQ_TYPE_LEVEL_HIGH>;
 		};
 
 		scmi: scmi {