diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi
index b0c9674fad17..1e93c94a9eac 100644
--- a/arch/arm/boot/dts/r8a7778.dtsi
+++ b/arch/arm/boot/dts/r8a7778.dtsi
@@ -150,7 +150,7 @@
 	i2c0: i2c@ffc70000 {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		compatible = "renesas,i2c-r8a7778";
+		compatible = "renesas,i2c-r8a7778", "renesas,rcar-gen1-i2c";
 		reg = <0xffc70000 0x1000>;
 		interrupts = <GIC_SPI 67 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C0>;
@@ -161,7 +161,7 @@
 	i2c1: i2c@ffc71000 {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		compatible = "renesas,i2c-r8a7778";
+		compatible = "renesas,i2c-r8a7778", "renesas,rcar-gen1-i2c";
 		reg = <0xffc71000 0x1000>;
 		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C1>;
@@ -172,7 +172,7 @@
 	i2c2: i2c@ffc72000 {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		compatible = "renesas,i2c-r8a7778";
+		compatible = "renesas,i2c-r8a7778", "renesas,rcar-gen1-i2c";
 		reg = <0xffc72000 0x1000>;
 		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C2>;
@@ -183,7 +183,7 @@
 	i2c3: i2c@ffc73000 {
 		#address-cells = <1>;
 		#size-cells = <0>;
-		compatible = "renesas,i2c-r8a7778";
+		compatible = "renesas,i2c-r8a7778", "renesas,rcar-gen1-i2c";
 		reg = <0xffc73000 0x1000>;
 		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp0_clks R8A7778_CLK_I2C3>;