There is a so called ACPI support for extcon-usb-gpio. Since GPIO ACPI library is going to be stricter and this driver might not work anymore. I would like to know: 1. Is there any real DSDT which contains device enumerated by this driver? 2. If "yes" on 1, does that DSDT contain _DSD method for the device? 3. If "no" on 2, how is it supposed to work at all? So, regarding on the answers, I am in between of reverting commit 942c7924a51edb75baf805679141e97140e07218 Author: Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> Date: Tue Apr 26 08:35:54 2016 +0900 extcon: usb-gpio: add support for ACPI gpio interface *or* someone better to add real DSDT example to Documentation regarding this driver. -- Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html