diff --git a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-84xx-wosm.dtsi b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-84xx-wosm.dtsi
index cea5c30431a5..08e6c0d56c80 100644
--- a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-84xx-wosm.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-84xx-wosm.dtsi
@@ -222,7 +222,7 @@
 
 			partition@0 {
 				label = "ospi.mram.mem";
-				reg = <0x0 0x800000>;
+				reg = <0x0 0x100000>; /* 1MB total capacity */
 			};
 		};
 	};