RE: [PATCH v2 2/2] usb: dwc3: Add workaround for host mode VBUS glitch when boot

2019-02-25 Thread Ran Wang
> Subject: Re: [PATCH v2 2/2] usb: dwc3: Add workaround for host mode VBUS > glitch when boot > > On Tue, Feb 19, 2019 at 1:24 AM Ran Wang wrote: > > > > When DWC3 is set to host mode by programming register DWC3_GCTL, VBUS > > (or its control signal) will

Re: [PATCH v2 2/2] usb: dwc3: Add workaround for host mode VBUS glitch when boot

2019-02-25 Thread Yang Li
On Tue, Feb 19, 2019 at 1:24 AM Ran Wang wrote: > > When DWC3 is set to host mode by programming register DWC3_GCTL, VBUS > (or its control signal) will be turned on immediately on related Root Hub > ports. Then, the VBUS is turned off for a little while(15us) when do xhci > reset (conducted by