diff --git a/arch/arm64/boot/dts/renesas/r8a7796.dtsi b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
index ef10fb548681..f8e9313f9405 100644
--- a/arch/arm64/boot/dts/renesas/r8a7796.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a7796.dtsi
@@ -1625,9 +1625,9 @@ sdhi3: sd@ee160000 {
 
 		tsc: thermal@e6198000 {
 			compatible = "renesas,r8a7796-thermal";
-			reg = <0 0xe6198000 0 0x68>,
-			      <0 0xe61a0000 0 0x5c>,
-			      <0 0xe61a8000 0 0x5c>;
+			reg = <0 0xe6198000 0 0x100>,
+			      <0 0xe61a0000 0 0x100>,
+			      <0 0xe61a8000 0 0x100>;
 			interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 68 IRQ_TYPE_LEVEL_HIGH>,
 				     <GIC_SPI 69 IRQ_TYPE_LEVEL_HIGH>;