Initial commit with basic project structure and Firebeetle 2 board definition

boards/espressif/esp32_ethernet_kit/board_init.c

@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2022 Grant Ramsay <grant.ramsay@hotmail.com>
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/init.h>
+#include <zephyr/drivers/gpio.h>
+
+#define IP101GRI_RESET_N_PIN	5
+
+static int board_esp32_ethernet_kit_init(void)
+{
+	const struct device *gpio = DEVICE_DT_GET(DT_NODELABEL(gpio0));
+
+	if (!device_is_ready(gpio)) {
+		return -ENODEV;
+	}
+
+	/* Enable the Ethernet phy */
+	int res = gpio_pin_configure(
+		gpio, IP101GRI_RESET_N_PIN,
+		GPIO_OUTPUT | GPIO_OUTPUT_INIT_HIGH);
+
+	return res;
+}
+
+SYS_INIT(board_esp32_ethernet_kit_init, PRE_KERNEL_2, CONFIG_GPIO_INIT_PRIORITY);