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OMAPL138 是否支持otg

Other Parts Discussed in Thread: OMAP-L138

在ti的文档上看说不支持otg, 可好像有人实现了

请问

1. 是否支持usb 2.0的那个为otg

2. 现在2.0的那个为从, 是否可以设置为主

3. 如果可以设置为主, 是在内核里编译好还是能动态改变

4. 内核需要修改什么

5. 如果设置为主, 用什么样的线缆可以接u盘

  • 1、在OMAPL138 DATASHEET有说明,其USB2.0支持OTG

    2、你指的什么应该的时候为从?

    USB0 operating mode identification pin. For OTG mode or device only mode of operation,

    do NOT connect the USB0_ID pin, that is, leave the pin floating. For host only mode of

    operation, connect the USB0_ID pin to ground via a 0 ohm resistor or connect the pin

    directly to ground.

  • 支持的,OMAP-L138的物理层硬件支持1.1和2.0,只需区分OHCI和OTG协议就好了