diff --git a/boards/arm/xmc47_relax_kit/arduino_r3_connector.dtsi b/boards/arm/xmc47_relax_kit/arduino_r3_connector.dtsi
index c927e3c7f81..557df23766b 100644
--- a/boards/arm/xmc47_relax_kit/arduino_r3_connector.dtsi
+++ b/boards/arm/xmc47_relax_kit/arduino_r3_connector.dtsi
@@ -56,6 +56,4 @@
 
 arduino_spi: &usic2ch0 {};
 arduino_serial: &usic1ch0 {};
-/* The drivers for i2c not yet implemented. Add placeholder in the */
-/* correct usic channel. */
 arduino_i2c: &usic1ch1 {};
diff --git a/boards/arm/xmc47_relax_kit/xmc47_relax_kit-pinctrl.dtsi b/boards/arm/xmc47_relax_kit/xmc47_relax_kit-pinctrl.dtsi
index c8dbbd27a5e..c8c8282c5c3 100644
--- a/boards/arm/xmc47_relax_kit/xmc47_relax_kit-pinctrl.dtsi
+++ b/boards/arm/xmc47_relax_kit/xmc47_relax_kit-pinctrl.dtsi
@@ -55,3 +55,13 @@
 	drive-push-pull;
 	hwctrl = "disabled";
 };
+
+&i2c_controller_scl_p0_13_u1c1 {
+	drive-strength = "strong-sharp-edge";
+	hwctrl = "disabled";
+};
+
+&i2c_controller_sda_p3_15_u1c1 {
+	drive-strength = "strong-soft-edge";
+	hwctrl = "disabled";
+};
diff --git a/boards/arm/xmc47_relax_kit/xmc47_relax_kit.dts b/boards/arm/xmc47_relax_kit/xmc47_relax_kit.dts
index 3f0a6e8b0c9..c6ed672ab62 100644
--- a/boards/arm/xmc47_relax_kit/xmc47_relax_kit.dts
+++ b/boards/arm/xmc47_relax_kit/xmc47_relax_kit.dts
@@ -130,6 +130,20 @@
 	#size-cells = <0>;
 };
 
+&usic1ch1 {
+	compatible = "infineon,xmc4xxx-i2c";
+	status = "okay";
+
+	pinctrl-0 = <&i2c_controller_scl_p0_13_u1c1 &i2c_controller_sda_p3_15_u1c1>;
+	pinctrl-names = "default";
+	scl-src = "DX1B";
+	sda-src = "DX0A";
+	interrupts = <94 1>;
+
+	#address-cells = <1>;
+	#size-cells = <0>;
+};
+
 &adc0 {
 	vref-internal-mv = <3300>;
 };
diff --git a/tests/drivers/uart/uart_async_api/boards/xmc47_relax_kit.overlay b/tests/drivers/uart/uart_async_api/boards/xmc47_relax_kit.overlay
index 878f2502914..431232855f4 100644
--- a/tests/drivers/uart/uart_async_api/boards/xmc47_relax_kit.overlay
+++ b/tests/drivers/uart/uart_async_api/boards/xmc47_relax_kit.overlay
@@ -4,6 +4,11 @@
 
 dut: &usic1ch1 {
 	compatible = "infineon,xmc4xxx-uart";
+	status = "okay";
+
+	/delete-property/ scl-src;
+	/delete-property/ sda-src;
+
 	current-speed = <921600>;
 	interrupts = <90 1 91 1>;
 	interrupt-names = "tx", "rx";
@@ -15,7 +20,6 @@ dut: &usic1ch1 {
 	fifo-start-offset = <0>;
 	fifo-tx-size = <0>;
 	fifo-rx-size = <0>;
-	status = "okay";
 };
 
 &uart_tx_p3_15_u1c1 {