boards: renesas: Add I2C support for FPB-RX261 board

Add I2C support for FPB-RX261 board

Signed-off-by: Hau Ho <[email protected]>

Author: Hau Ho

boards/renesas/fpb_rx261/fpb_rx261-pinctrl.dtsi

@@ -11,4 +11,11 @@
 				<RX_PSEL(RX_PSEL_SCI_5, 0xC, 0x2)>; /* RX */
 		};
 	};
+
+	i2c0_default: i2c0_default {
+		group1 {
+			psels = <RX_PSEL(RX_PSEL_P1nPFS_SDA, 1, 3)>, /* SDA P13*/
+				<RX_PSEL(RX_PSEL_P1nPFS_SCL, 1, 2)>; /* SCL P12*/
+		};
+	};
 };

boards/renesas/fpb_rx261/fpb_rx261.dts

@@ -84,3 +84,10 @@
 		status = "okay";
 	};
 };
+
+&i2c0 {
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-names = "default";
+	clock-frequency = <DT_FREQ_K(400)>;
+	status = "okay";
+};