board: gd32e103v_eval: add at24 eeprom.

add support for at24 eeprom.

Signed-off-by: YuLong Yao <[email protected]>

Author: feilongfl

boards/arm/gd32e103v_eval/gd32e103v_eval-pinctrl.dtsi

@@ -17,4 +17,11 @@
 			pinmux = <TIMER0_CH0_PA8_OUT_NORMP>;
 		};
 	};
+
+	i2c0_default: i2c0_default {
+		group1 {
+			pinmux = <I2C0_SCL_PB6_NORMP>, <I2C0_SDA_PB7_NORMP>;
+			drive-open-drain;
+		};
+	};
 };

boards/arm/gd32e103v_eval/gd32e103v_eval.dts

@@ -69,6 +69,7 @@
 		led1 = &led3;
 		sw0 = &user_key;
 		pwm-led0 = &pwm_led;
+		eeprom-0 = &eeprom0;
 	};
 };
 
@@ -108,3 +109,20 @@
 		pinctrl-names = "default";
 	};
 };
+
+&i2c0 {
+	status = "okay";
+	pinctrl-0 = <&i2c0_default>;
+	pinctrl-names = "default";
+
+	eeprom0: eeprom@50 {
+		compatible = "atmel,at24";
+		reg = <0x50>;
+		status = "okay";
+		label = "EEPROM_AT24C02";
+		size = <256>;
+		pagesize = <8>;
+		address-width = <8>;
+		timeout = <5>;
+	};
+};

samples/drivers/eeprom/boards/gd32e103v_eval.conf

@@ -0,0 +1,3 @@
+CONFIG_I2C=y
+CONFIG_EEPROM_AT24=y
+CONFIG_EEPROM_INIT_PRIORITY=75