Re: [PATCH 1/2] usb: dwc3: Add avoiding vbus glitch happen during xhci reset

2019-01-22 Thread Rob Herring
On Mon, Jan 21, 2019 at 8:38 PM Ran Wang wrote: > > Hi Rob, > > On January 22, 2019 09:03, Rob Herring wrote: > > > > On Wed, Jan 16, 2019 at 06:48:06AM +, Ran Wang wrote: > > > When DWC3 is set to host mode by programming register DWC3_GCTL, > > VUBS > > > > s/VUBS/VBUS/ > > Yes, will fix it

RE: [PATCH 1/2] usb: dwc3: Add avoiding vbus glitch happen during xhci reset

2019-01-21 Thread Ran Wang
Hi Rob, On January 22, 2019 09:03, Rob Herring wrote: > > On Wed, Jan 16, 2019 at 06:48:06AM +, Ran Wang wrote: > > When DWC3 is set to host mode by programming register DWC3_GCTL, > VUBS > > s/VUBS/VBUS/ Yes, will fix it in next version. > > (or its control signal) will on immediately

Re: [PATCH 1/2] usb: dwc3: Add avoiding vbus glitch happen during xhci reset

2019-01-21 Thread Rob Herring
On Wed, Jan 16, 2019 at 06:48:06AM +, Ran Wang wrote: > When DWC3 is set to host mode by programming register DWC3_GCTL, VUBS s/VUBS/VBUS/ > (or its control signal) will on immediately on related Root Hub ports. /will on/will turn on/ > Then the VUBS will be de-asserted for a little while

RE: [PATCH 1/2] usb: dwc3: Add avoiding vbus glitch happen during xhci reset

2019-01-15 Thread Ran Wang
Hi, On 16, 2019 14:48 Ran Wang wrote: > It seems the preface patch (0/2) failed to be accepted by patchwork (could anyone tell me how to generate it properly with some sommand?), I paste its content here for your reference : This to fix USB enumeration compatibility issue found on DWC3 (host

[PATCH 1/2] usb: dwc3: Add avoiding vbus glitch happen during xhci reset

2019-01-15 Thread Ran Wang
When DWC3 is set to host mode by programming register DWC3_GCTL, VUBS (or its control signal) will on immediately on related Root Hub ports. Then the VUBS will be de-asserted for a little while during xhci reset (conducted by xhci driver) for a little while and back to normal. This VBUS glitch