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

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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: Jack Pham <jackp@codeaurora.org>
This commit is contained in:
Jack Pham 2019-10-09 09:06:42 -07:00
commit 669a7f8d4f
1 changed files with 0 additions and 9 deletions
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9
drivers/usb/dwc3/core.c
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@ -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) {