diff --git a/qcom/sun-coresight.dtsi b/qcom/sun-coresight.dtsi
index 7a991dcb..d18956e9 100644
--- a/qcom/sun-coresight.dtsi
+++ b/qcom/sun-coresight.dtsi
@@ -917,7 +917,7 @@
 		};
 	};
 
-	modem_diag: modem-diag {
+	modem_diag: modem_diag {
 		compatible = "arm,coresight-dummy-source";
 
 		coresight-name = "coresight-modem-diag";
@@ -5358,6 +5358,7 @@
 		real-name = "coresight-tmc-etr1";
 		qdss,buffer-size = <0x2000000>;
 		qcom,secure-component;
+		memory-region = <&qdss_apps_mem>;
 		coresight-csr = <&csr>;
 		csr-atid-offset = <0x108>;
 		csr-irqctrl-offset = <0x70>;