#include <linux/module.h> #include <linux/usb.h> #include <linux/usb/phy.h>
#define EXYNOS3830_USB_PHY_NUM 1
platform_set_drvdata(pdev, usb_phy);
The Exynos 3830 is a system-on-chip (SoC) designed by Samsung Electronics, and it includes a USB controller. To develop a proper USB driver for this chip, we need to understand the USB controller's architecture, the Exynos 3830's overall system design, and the Linux kernel's USB driver framework.