diff --git a/sun-ipa.dtsi b/sun-ipa.dtsi
index bba7776c..c27190e8 100644
--- a/sun-ipa.dtsi
+++ b/sun-ipa.dtsi
@@ -66,6 +66,7 @@
 	qcom,additional-mapping =
 		/* modem tables in IMEM */
 		<0x14683000 0x14683000 0x2000>;
+	qcom,ipa-q6-smem-size = <55296>;
 };
 
 &ipa_smmu_uc {