diff --git a/arch/sandbox/dts/sandbox.dtsi b/arch/sandbox/dts/sandbox.dtsi
index f0ee0b3..8aaf911 100644
--- a/arch/sandbox/dts/sandbox.dtsi
+++ b/arch/sandbox/dts/sandbox.dtsi
@@ -451,6 +451,15 @@
 	thermal {
 		compatible = "sandbox,thermal";
 	};
+
+	arm-ffa-emul {
+		compatible = "sandbox,arm-ffa-emul";
+
+		sandbox-arm-ffa {
+				compatible = "sandbox,arm-ffa";
+		};
+	};
+
 };
 
 &cros_ec {