boards: arm: xmc47_relax_kit: Configure usic1ch1 as i2c node

It is the arduino_i2c node on the board.
Also remove comment from arduino_r3_connector as the arduino_i2c
node can be used.

Signed-off-by: Andriy Gelman <[email protected]>

Author: talih0

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 {};

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";
+};

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>;
 };

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 {