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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: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2011-10-14 14:51:38 +03:00
parent fae2b904aa
commit 05870c5ba2
1 changed files with 16 additions and 0 deletions
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16
drivers/usb/dwc3/gadget.c
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@ -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;