Hi Felipe, That's some great information, thanks!
At first glance, the DSDT table has two interesting bits. (I would paste the decompiled source, but I think it may be copyrighted? Correct me if I'm wrong.) The first is the USB mux, an SMSC USB3750 connected to I2C1. According to the datasheet, this IC supports switching the USB data lanes between functions. This looks promising. The second interesting bit is a device named "OTG1". The _STA method of OTG1 checks the value of OTGM--defined earlier as an 8-bit field in GNVS (NVRAM?)--and returns 0xF if it's not equal to zero, otherwise it returns zero. I'm guessing this is the host controller, based on the device name, "Baytrail XHCI controller (Synopsys core/OTG)". There's a field called OTGD in the power management capability registers opregion, but it's not referenced anywhere else. There doesn't appear to be anything else related to the device controller. The only OS interface string check appears to be in the configuration of the PCI bus, and it only checks against various versions of Windows. I'm thinking my next step is to boot into Android and dump the DSDT table, and see if it's the same. I'm betting it's not. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
