Hi, Couple of questions.. On Tue, Jul 3, 2012 at 4:08 AM, Mark A. Greer <mgreer@xxxxxxxxxxxxxxx> wrote: > [The reason I'm sending this is that there is an issue but I probably > won't be able to spend much time on it for a while. So, I'm sending > it in case a) it helps someone else who bumps into it and b) someone > else picks up and completes the fix.] > > Hello. > > In testing USB OTG Gadget on the am37x EVM with the mainline kernel > I discovered that DMA doesn't work (but PIO does). When I tested > the same kernel on the BeagleBoard-xM (BBxM), which has essentially > the same SoC, it worked fine. They do have different OTG PHYs, though. > The am37x EVM uses an ISP 1507 and the BBxM uses the PHY on the > TPS65950 (twl4030). The different PHYs means that they use different > drivers in drivers/usb/otg. The am37x EVM uses nop-usb-xceiv.c and > the BBxM uses twl4030-usb.c. Where does the comparator (VBUS) exist in am37x? Who will be first interrupted when a cable is connected? Thanks Kishon -- 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
