On Mon, Apr 07, 2008 at 04:31:11AM -0700, Bryan Wu wrote: > > > > > > I just don't understand why they are OK on Linux host PC and failed on > > > Linux Host embedded MUSB OTG. > > > > PCs have to source up to 500mA load on usb bus, embedded otg/hosts only up > > to 100mA. > > > > Maybe it is one explanation for these bugs. > I found the bug usb device: > USB SD card reader MaxPower = 250mA > Apple 30G iPod MaxPower = 500mA > > But the latest 80G iPod Classic which also has MaxPower = 500mA works > fine with MUSB.
Like i told you, this is just a string we manually put there. Some manufacturers seem not to use it the right way and just put the max possible, e.g. 500mA > For this current source problem, I remember there are some external > VBUS charger IC can help the USB OTG to provide more than 100mA > current. Do you have it in blackfin ? -- Best Regards, Felipe Balbi [EMAIL PROTECTED] http://blog.felipebalbi.com -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
