I am trying to make the issue more clear and heve more test, There is Omap3530 , DM6xx, and Convertor (Type A) , convertor (Type B), Both A type and B type convertor can work on Dm6xx, A type convertor can work on Omap3530. If B type convertor plugging on Omap while the board bootup, no device can detected. It seems there is no power supply under B type, or there must be unsuccessfully session happened. If using A type first , then plug B type, the B type can be used too. But why, is the power supply weeker under Omap35x than Dm6xx? That seems not possible, I use Rev G and with external powered hub. Is there any thing I missed in the hardware configuration on Omap board? Thanks, Jung 2010/1/28 jung songtan <jungsongtan@xxxxxxxxx>: > Hi experts, > > What kind of convertor are you using? or do you have any recommended? > > I am using one kind of such convertor to connect the Musb OTG port to device. > But no devices can be detected. > > if I change another kind of convertor, It works. > I check the convertor on other board such as DM6xx, it works fine. > > Has anyone met such issue before? > or I have any thing missing to configure the usb? > > Thanks very much, > > -- > K T Jung > -- K T Jung -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
