Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 05870c5b authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: workaround: missing USB3 Reset event 



DWC3 revisions <1.90a have an issue which would cause
a missing USB3 Reset event. In such cases, it's
suggested that we follow the steps of a normal
USB3 Reset on Connection Done Event.

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent fae2b904

drivers/usb/dwc3/gadget.c

+16 −0
Original line number Diff line number Diff line
@@ -1756,6 +1756,22 @@ static void dwc3_gadget_conndone_interrupt(struct dwc3 *dwc) 


	switch (speed) {

	case DWC3_DCFG_SUPERSPEED:

		/*

		 * WORKAROUND: DWC3 revisions <1.90a have an issue which

		 * would cause a missing USB3 Reset event.

		 *

		 * In such situations, we should force a USB3 Reset

		 * event by calling our dwc3_gadget_reset_interrupt()

		 * routine.

		 *

		 * Refers to:

		 *

		 * STAR#9000483510: RTL: SS : USB3 reset event may

		 * not be generated always when the link enters poll

		 */

		if (dwc->revision < DWC3_REVISION_190A)

			dwc3_gadget_reset_interrupt(dwc);



		dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);

		dwc->gadget.ep0->maxpacket = 512;

		dwc->gadget.speed = USB_SPEED_SUPER;