diff --git a/qcom/lagoon-ion.dtsi b/qcom/lagoon-ion.dtsi
index 5a5f72bf3599..9942c82775ab 100644
--- a/qcom/lagoon-ion.dtsi
+++ b/qcom/lagoon-ion.dtsi
@@ -14,6 +14,18 @@
 			qcom,ion-heap-type = "SYSTEM_SECURE";
 		};
 
+		qcom,ion-heap@27 { /* QSEECOM HEAP */
+			reg = <27>;
+			memory-region = <&qseecom_mem>;
+			qcom,ion-heap-type = "DMA";
+		};
+
+		qcom,ion-heap@19 { /* QSEECOM TA HEAP */
+			reg = <19>;
+			memory-region = <&qseecom_ta_mem>;
+			qcom,ion-heap-type = "DMA";
+		};
+
 		qcom,ion-heap@14 { /* SECURE CARVEOUT HEAP */
 			reg = <14>;
 			qcom,ion-heap-type = "SECURE_CARVEOUT";
diff --git a/qcom/lagoon.dtsi b/qcom/lagoon.dtsi
index aad1a78b5e18..1eca7914420f 100644
--- a/qcom/lagoon.dtsi
+++ b/qcom/lagoon.dtsi
@@ -504,6 +504,22 @@
 			reg = <0x0 0xc0000000 0x0 0x3900000>;
 		};
 
+		qseecom_mem: qseecom_region {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;
+			reusable;
+			alignment = <0x0 0x400000>;
+			size = <0x0 0x1400000>;
+		};
+
+		qseecom_ta_mem: qseecom_ta_region {
+			compatible = "shared-dma-pool";
+			alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;
+			reusable;
+			alignment = <0x0 0x400000>;
+			size = <0x0 0x1000000>;
+		};
+
 		secure_display_memory: secure_display_region {
 			compatible = "shared-dma-pool";
 			alloc-ranges = <0 0x00000000 0 0xffffffff>;
@@ -1024,6 +1040,22 @@
 		reg-names = "pshold-base", "tcsr-boot-misc-detect";
 	};
 
+	qcom_seecom: qseecom@c1700000 {
+		compatible = "qcom,qseecom";
+		reg = <0xc1700000 0x2200000>;
+		reg-names = "secapp-region";
+		memory-region = <&qseecom_mem>;
+		qcom,hlos-num-ce-hw-instances = <1>;
+		qcom,hlos-ce-hw-instance = <0>;
+		qcom,qsee-ce-hw-instance = <0>;
+		qcom,disk-encrypt-pipe-pair = <2>;
+		qcom,support-fde;
+		qcom,no-clock-support;
+		qcom,fde-key-size;
+		qcom,commonlib64-loaded-by-uefi;
+		qcom,qsee-reentrancy-support = <2>;
+	};
+
 	qcom_rng: qrng@793000 {
 		compatible = "qcom,msm-rng";
 		reg = <0x793000 0x1000>;