Roger, On Thu, Nov 14, 2019 at 10:48:36AM +0200, Roger Quadros wrote: > Bin, > > On 13/11/2019 16:15, Bin Liu wrote: > > VBUS should be turned off when leaving the host mode. > > Set GCTL_PRTCAP to device mode in teardown to de-assert DRVVBUS pin to > > turn off VBUS power. > > Doesn't DRVVBUS pin de-assert when root hub driver turns off port power? > Which should happen when XHCI host driver is unregistered as part of > dwc3_host_exit()? No, DRVVBUS is still 3.3v after 'modprbe -r dwc3-omap' on TI AM57x platform if this patch is not applied. -Bin.
