diff --git a/arch/arm/boot/dts/socfpga_arria5_socdk.dts b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
index fa70c394dcfe557c16307c2b702aee66356f793b..8672edf9ba4ebccb6c4b131909bccd6d9d8070bb 100644
--- a/arch/arm/boot/dts/socfpga_arria5_socdk.dts
+++ b/arch/arm/boot/dts/socfpga_arria5_socdk.dts
@@ -98,6 +98,14 @@
 
 &i2c0 {
 	status = "okay";
+	clock-frequency = <100000>;
+
+	/*
+	 * adjust the falling times to decrease the i2c frequency to 50Khz
+	 * because the LCD module does not work at the standard 100Khz
+	 */
+	i2c-sda-falling-time-ns = <5000>;
+	i2c-scl-falling-time-ns = <5000>;
 
 	eeprom@51 {
 		compatible = "atmel,24c32";
diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
index 6d3188bfefd838e8b6b5964c73297e60e9098fd8..24650bafcef473c5e19170e8b980a0b20bec0d47 100644
--- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
+++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
@@ -98,6 +98,14 @@
 
 &i2c0 {
 	status = "okay";
+	clock-frequency = <100000>;
+
+	/*
+	 * adjust the falling times to decrease the i2c frequency to 50Khz
+	 * because the LCD module does not work at the standard 100Khz
+	 */
+	i2c-sda-falling-time-ns = <5000>;
+	i2c-scl-falling-time-ns = <5000>;
 
 	eeprom@51 {
 		compatible = "atmel,24c32";