diff --git a/qcom/sun-dma-heaps.dtsi b/qcom/sun-dma-heaps.dtsi
index 3dbc99dd..f468d650 100644
--- a/qcom/sun-dma-heaps.dtsi
+++ b/qcom/sun-dma-heaps.dtsi
@@ -23,7 +23,7 @@
 		qcom,sp_hlos {
 			qcom,dma-heap-name = "qcom,sp-hlos";
 			qcom,dma-heap-type = <HEAP_TYPE_CMA>;
-			memory-region = <&spss_region_mem>;
+			memory-region = <&sp_mem>;
 		};
 
 		qcom,secure_sp_tz {
diff --git a/qcom/sun.dtsi b/qcom/sun.dtsi
index 7a2c0a75..a4caca91 100644
--- a/qcom/sun.dtsi
+++ b/qcom/sun.dtsi
@@ -1218,6 +1218,9 @@
 		qcom,proxy-clock-names = "xo";
 		status = "ok";
 
+		qcom,signal-aop;
+		qcom,qmp = <&aoss_qmp>;
+
 		memory-region = <&spss_region_mem>;
 		qcom,spss-scsr-bits = <24 25>;
 		qcom,extra-size = <4096>;
@@ -2999,6 +3002,14 @@
 		reg = <0x0 0x81c60000 0x0 0x20000>;
 	};
 
+	sp_mem: sp_region {  /* SPSS-HLOS ION shared mem */
+		compatible = "shared-dma-pool";
+		alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;
+		reusable;
+		alignment = <0x0 0x400000>;
+		size = <0x0 0x1000000>;
+	};
+
 	qseecom_mem: qseecom_region {
 		compatible = "shared-dma-pool";
 		alloc-ranges = <0x0 0x00000000 0x0 0xffffffff>;