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Date: Tue, 13 Dec 2022 06:33:29 -0300 From: Fabio Estevam <festevam@...il.com> To: Jun Li <jun.li@....com> Cc: "bjorn@...k.no" <bjorn@...k.no>, Peter Chen <peter.chen@...nel.org>, Marek Vasut <marex@...x.de>, netdev <netdev@...r.kernel.org>, USB list <linux-usb@...r.kernel.org>, Alexander Stein <alexander.stein@...tq-group.com>, Schrempf Frieder <frieder.schrempf@...tron.de> Subject: Re: imx7: USB modem reset causes modem to not re-connect Hi Li Jun, On Tue, Dec 13, 2022 at 5:15 AM Jun Li <jun.li@....com> wrote: > So this disconnect and then connect is you expected behavior? Yes, correct. I found a way to get this behavior in both 5.10 as well as 6.1 kernels: If I remove the USB_OTG2_OC pinctrl entry and pass 'disable-over-current', it works as expected. On this board, the MX7D_PAD_UART3_RTS_B__USB_OTG2_OC pad goes to 3.3V via a 10Kohm pullup resistor. Could you please explain why removing theUSB_OTG2_OC entry makes things to work? Thanks
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