diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index 191f32bc43ea..59e4251dc1af 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -425,7 +425,7 @@ &i2c2 {
 	pinctrl-names = "default";
 
 	status = "okay";
-	clock-frequency = <400000>;
+	clock-frequency = <100000>;
 
 	composite-in@20 {
 		compatible = "adi,adv7180";