usb: dwc3: core: Fix broken system suspend/resume on AM437x
On TI's AM437x, the DWC3 controller looses state after a system suspend/resume. We are re-initializing the controller but we miss restoring the PRTCAP register. This causes USB host to break on AM437x after a system suspend/resume. Fix this by restoring the PRTCAP register on system resume. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -1440,6 +1440,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
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if (ret)
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return ret;
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dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
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spin_lock_irqsave(&dwc->lock, flags);
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dwc3_gadget_resume(dwc);
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spin_unlock_irqrestore(&dwc->lock, flags);
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@ -1450,6 +1451,7 @@ static int dwc3_resume_common(struct dwc3 *dwc, pm_message_t msg)
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ret = dwc3_core_init(dwc);
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if (ret)
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return ret;
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dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST);
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}
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break;
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case DWC3_GCTL_PRTCAP_OTG:
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