diff --git a/arch/arm/boot/dts/r8a7794-alt.dts b/arch/arm/boot/dts/r8a7794-alt.dts
index e7c94554d847d9e438b2e1a7db5fe14ffabeaf1d..88ed017495e900b7142de8691f0e889d007b2a27 100644
--- a/arch/arm/boot/dts/r8a7794-alt.dts
+++ b/arch/arm/boot/dts/r8a7794-alt.dts
@@ -115,6 +115,11 @@
 		renesas,groups = "eth_link_b", "eth_mdio_b", "eth_rmii_b";
 		renesas,function = "eth";
 	};
+
+	i2c1_pins: i2c1 {
+		renesas,groups = "i2c1";
+		renesas,function = "i2c1";
+	};
 };
 
 &cmt0 {
@@ -134,6 +139,14 @@
 	};
 };
 
+&i2c1 {
+	pinctrl-0 = <&i2c1_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+};
+
 &scif2 {
 	status = "okay";
 };