diff --git a/arch/arm/dts/imx8mm-cl-iot-gate-optee-u-boot.dtsi b/arch/arm/dts/imx8mm-cl-iot-gate-optee-u-boot.dtsi
index d93e1cbd8a7..c4327d31873 100644
--- a/arch/arm/dts/imx8mm-cl-iot-gate-optee-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-cl-iot-gate-optee-u-boot.dtsi
@@ -6,13 +6,6 @@
 #include "imx8mm-u-boot.dtsi"
 
 / {
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
-
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		bootph-pre-ram;
diff --git a/arch/arm/dts/imx8mm-cl-iot-gate-u-boot.dtsi b/arch/arm/dts/imx8mm-cl-iot-gate-u-boot.dtsi
index 1878c4e13fb..219504f6110 100644
--- a/arch/arm/dts/imx8mm-cl-iot-gate-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-cl-iot-gate-u-boot.dtsi
@@ -6,13 +6,6 @@
 #include "imx8mm-u-boot.dtsi"
 
 / {
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
-
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		bootph-pre-ram;
diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
index 13688ec0d0f..155670da18d 100644
--- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
@@ -11,13 +11,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &aips4 {
diff --git a/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi b/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi
index 65dfd33725e..1ad9d49a111 100644
--- a/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-kontron-bl-common-u-boot.dtsi
@@ -16,13 +16,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &crypto {
diff --git a/arch/arm/dts/imx8mm-phg-u-boot.dtsi b/arch/arm/dts/imx8mm-phg-u-boot.dtsi
index 3ced97cfaaf..c9e0b442050 100644
--- a/arch/arm/dts/imx8mm-phg-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-phg-u-boot.dtsi
@@ -11,13 +11,6 @@
 		wdt = <&wdog1>;
 		bootph-pre-ram;
 	};
-
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
 };
 
 &aips4 {
diff --git a/arch/arm/dts/imx8mm-u-boot.dtsi b/arch/arm/dts/imx8mm-u-boot.dtsi
index 6085128e24e..f7eb29c7364 100644
--- a/arch/arm/dts/imx8mm-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-u-boot.dtsi
@@ -7,6 +7,15 @@
 	binman: binman {
 		multiple-images;
 	};
+
+#ifdef CONFIG_OPTEE
+	firmware {
+		optee {
+			compatible = "linaro,optee-tz";
+			method = "smc";
+		};
+	};
+#endif
 };
 
 &soc {
diff --git a/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi b/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi
index b06ce3fa034..8efa4ddc734 100644
--- a/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi
@@ -6,13 +6,6 @@
 #include "imx8mm-u-boot.dtsi"
 
 / {
-	firmware {
-		optee {
-			compatible = "linaro,optee-tz";
-			method = "smc";
-		};
-	};
-
 	wdt-reboot {
 		compatible = "wdt-reboot";
 		bootph-pre-ram;