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Commit 669a7f8d authored by Jack Pham's avatar Jack Pham
Browse files

usb: dwc3: Allow dwc_usb31 to operate in dual-role 



According to the comment in dwc3_get_dr_mode() controller
revisions > 3.30a, including dwc_usb31, do not support OTG.
However, dual-role switching can still be supported with the
use of an extcon or usb_role_switch driver, so there is no
need to restrict the operation to host-only or peripheral-only.

Change-Id: I7dea9ff15f5ac15f673c4569ffe401981de04f22
Signed-off-by: default avatarJack Pham <jackp@codeaurora.org>
parent 06ae205d

drivers/usb/dwc3/core.c

+0 −9
Original line number Diff line number Diff line
@@ -84,15 +84,6 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc) 
			mode = USB_DR_MODE_HOST;

		else if (IS_ENABLED(CONFIG_USB_DWC3_GADGET))

			mode = USB_DR_MODE_PERIPHERAL;



		/*

		 * DWC_usb31 and DWC_usb3 v3.30a and higher do not support OTG

		 * mode. If the controller supports DRD but the dr_mode is not

		 * specified or set to OTG, then set the mode to peripheral.

		 */

		if (mode == USB_DR_MODE_OTG &&

		    dwc->revision >= DWC3_REVISION_330A)

			mode = USB_DR_MODE_PERIPHERAL;

	}



	if (mode != dwc->dr_mode) {