diff --git a/arch/arm/boot/dts/mt7986-spim-nand-partition.dtsi b/arch/arm/boot/dts/mt7986-spim-nand-partition.dtsi
index 4cc7961..924f8cc 100644
--- a/arch/arm/boot/dts/mt7986-spim-nand-partition.dtsi
+++ b/arch/arm/boot/dts/mt7986-spim-nand-partition.dtsi
@@ -36,7 +36,7 @@
 
 			partition@580000 {
 				label = "ubi";
-				reg = <0x580000 0x4000000>;
+				reg = <0x580000 0xFA80000>;
 			};
 		};
 	};
diff --git a/arch/arm64/boot/dts/mediatek/mt7986-spim-nand-partition.dtsi b/arch/arm64/boot/dts/mediatek/mt7986-spim-nand-partition.dtsi
index 4cc7961..924f8cc 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986-spim-nand-partition.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7986-spim-nand-partition.dtsi
@@ -36,7 +36,7 @@
 
 			partition@580000 {
 				label = "ubi";
-				reg = <0x580000 0x4000000>;
+				reg = <0x580000 0xFA80000>;
 			};
 		};
 	};
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-dsa-10g-spim-nand.dts b/arch/arm64/boot/dts/mediatek/mt7988a-dsa-10g-spim-nand.dts
index 69f9f2e..495325b 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-dsa-10g-spim-nand.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-dsa-10g-spim-nand.dts
@@ -60,7 +60,7 @@
 
 			partition@780000 {
 				label = "ubi";
-				reg = <0x780000 0x7080000>;
+				reg = <0x780000 0xF080000>;
 			};
 		};
 	};
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts b/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
index 3153b89..256eac5 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-gsw-10g-spim-nand.dts
@@ -68,7 +68,7 @@
 
 			partition@780000 {
 				label = "ubi";
-				reg = <0x780000 0x7080000>;
+				reg = <0x780000 0xF080000>;
 			};
 		};
 	};