MTK平台绝密核心代码之 USB驱动，是学习研究MTK平台的重要代码，也是做其他类似平台开发的良好参考代码，贡献出来与大家分享。-MTK platform for top-secret code of the USB core is driven study MTK platform is an important source, but also other similar platforms to do a good referen

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