1 Scope of Document
This document describes USB hardware design, support stardard usb2.0 port on port1
2 Requiremen
2.1 Function Requirement
support stardard usb2.0 port on port1， support mass storage.
2.2 Performance Requirement
NA
3 Hardware Overview
usb interface,pin map:
USB0_N
USB0_P
Figure 1 usb interface block diagram
4 Functional Description
4.1 Functional Block Diagram
Linux usb stack is an layered architecture in which musb controller hardware is at the lowest layer. The musb controller driver abstract the musb controller hardware to linux usb stack.
Figure 2 linux usb stack architecture diagram
4.2 USB
4.2.1 Overview
5 Porting
5.1 Uboot porting
NA
5.2 Kernel porting
5.3 Application Interface
After the usb host controller driver was loaded , we can find usb device on the usb bus.
6 Follow-up
Write performance:
bs=512 file_size=100m
bs=1024 file_size=100m