On Tue, Jun 26, 2018 at 8:09 AM, Johan Hovold <johan@xxxxxxxxxx> wrote: > On Sat, Jun 23, 2018 at 11:24:08PM +0200, Aleksander Morgado wrote: >> This module exposes two USB configurations: a QMI+AT capable setup on >> USB config #1 and a MBIM capable setup on USB config #2. >> >> By default the kernel will choose the MBIM capable configuration as >> long as the cdc_mbim driver is available. This patch adds support for >> the serial ports in the secondary configuration. > > Could you please post the usb-devices output for this device? > > Depending on another driver to select a specific configuration seems > fragile (and that behaviour is even configurable). > This would be when running on configuration #1: T: Bus=04 Lev=03 Prnt=04 Port=02 Cnt=01 Dev#= 7 Spd=5000 MxCh= 0 D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr=896mA I: If#=0x0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=qcserial I: If#=0x1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=qcserial I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none) This would be when running on configuration #2: T: Bus=04 Lev=03 Prnt=04 Port=02 Cnt=01 Dev#= 6 Spd=5000 MxCh= 0 D: Ver= 3.10 Cls=ef(misc ) Sub=02 Prot=01 MxPS= 9 #Cfgs= 2 P: Vendor=413c ProdID=81d7 Rev=03.18 S: Manufacturer=DELL S: Product=DW5821e Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 3 Cfg#= 2 Atr=a0 MxPwr=896mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#=0x2 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=qcserial -- Aleksander https://aleksander.es -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
