usb: dwc3: workaround: missing USB3 Reset event (05870c5b) · Commits · 戴 / test

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:

Felipe Balbi <balbi@ti.com>

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;

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