boards: ti: lp_em_cc2340r5: Add I2C support

Enable I2C for TI lp_em_cc2340r5.

Signed-off-by: Stoyan Bogdanov <[email protected]>

Author: bogdanovs

boards/ti/lp_em_cc2340r5/lp_em_cc2340r5-pinctrl.dtsi

@@ -142,4 +142,18 @@
 		pinmux = <23 DIO23_T3_C2N>;
 		bias-disable;
 	};
+
+	/* I2C0 */
+	i2c0_scl_default: i2c0_scl_default {
+		pinmux = <24 DIO24_I2C0_SCL>;
+		bias-pull-up;
+		drive-open-drain;
+		input-enable;
+	};
+	i2c0_sda_default: i2c0_sda_default {
+		pinmux = <0 DIO0_I2C0_SDA>;
+		bias-pull-up;
+		drive-open-drain;
+		input-enable;
+	};
 };

boards/ti/lp_em_cc2340r5/lp_em_cc2340r5.dts

@@ -145,3 +145,11 @@
 	pinctrl-names = "default";
 	status = "okay";
 };
+
+&i2c0 {
+	status = "okay";
+	pinctrl-0 = <&i2c0_scl_default
+		     &i2c0_sda_default>;
+	clock-frequency = <100000>;
+	pinctrl-names = "default";
+};