diff --git a/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts b/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
index 35865033277f..f88e71c2b557 100644
--- a/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
+++ b/arch/arm/boot/dts/aspeed-bmc-opp-tacoma.dts
@@ -27,7 +27,7 @@ reserved-memory {
 
 		flash_memory: region@ba000000 {
 			no-map;
-			reg = <0xba000000 0x2000000>; /* 32M */
+			reg = <0xb8000000 0x4000000>; /* 64M */
 		};
 	};