Hi Fabio > -----Original Message----- > From: Fabio Estevam <festevam@xxxxxxxxx> > Sent: 2020年5月16日 19:36 > To: Jun Li <jun.li@xxxxxxx> > Cc: Peter Chen <peter.chen@xxxxxxx>; USB list <linux-usb@xxxxxxxxxxxxxxx> > Subject: Re: usbmisc_imx: charger detection errors > > Hi Li Jun, > > On Sat, May 16, 2020 at 3:33 AM Jun Li <jun.li@xxxxxxx> wrote: > > > This indicates the voltage of VBUS pad is below VBUS valid > > threshold(defaut is 4.75v), how is vbus connected on your imx7s-warp > > board? is the vbus connected from USB connector to vbus pad of imx7s SoC? > > I have sent you the schematics off-list. >From the schematics, the vbus is connected from connector to Vbus pad of imx7s. This error can be seen when you connect your imx7s board to whatever Power source?(Charger, PC host)? Please dump the below registers after connect the otg port to the power source for issue case: Non-core: 0x30b10400 ~ 0x30b10440 Li Jun > > Thanks
