diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 577ef34..5b54651 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -733,6 +733,11 @@
 			#address-cells = <1>;
 			#size-cells = <0>;
 
+			pwrdom_scmi: protocol@11 {
+				reg = <0x11>;
+				#power-domain-cells = <1>;
+			};
+
 			clk_scmi: protocol@14 {
 				reg = <0x14>;
 				#clock-cells = <1>;
@@ -1647,6 +1652,7 @@
 
 	sandbox_scmi {
 		compatible = "sandbox,scmi-devices";
+		power-domains = <&pwrdom_scmi 2>;
 		clocks = <&clk_scmi 2>, <&clk_scmi 0>;
 		resets = <&reset_scmi 3>;
 		regul0-supply = <&regul0_scmi>;