I'm trying to get my target to recognize a USB-connected 4G LTE modem on powerup....
My target is a beaglebone black (AM335x) using meta-ti "rocko" branch and I've added a kernel config fragment with the following: CONFIG_USB_NET_QMI_WWAN=m My distro.conf file removes the usbgadget and usbhost features: MACHINE_FEATURES_remove += " alsa usbgadget usbhost vfat" So far, when I power up the target, it looks as though the musb-hdrc driver is attaching to the USB Modem: [ 15.467735] usbcore: registered new interface driver usbfs [ 15.475891] am335x-phy-driver 47401300.usb-phy: 47401300.usb-phy supply vcc not found, using dummy regulator [ 15.483431] am335x-phy-driver 47401b00.usb-phy: 47401b00.usb-phy supply vcc not found, using dummy regulator [ 15.625497] pruss 4a300000.pruss: creating PRU cores and other child platform devices [ 15.639846] usbcore: registered new interface driver hub [ 15.718440] usbcore: registered new device driver usb [ 15.831900] remoteproc remoteproc1: 4a334000.pru is available [ 15.837767] pru-rproc 4a334000.pru: PRU rproc node /ocp/pruss_soc_bus@4a326004/pruss@0/pru@34000 probed successfully [ 15.867980] musb-hdrc musb-hdrc.1: MUSB HDRC host driver [ 15.868016] musb-hdrc musb-hdrc.1: new USB bus registered, assigned bus number 1 [ 15.883041] hub 1-0:1.0: USB hub found [ 15.883105] hub 1-0:1.0: 1 port detected [ 15.961998] remoteproc remoteproc2: 4a338000.pru is available [ 15.967859] pru-rproc 4a338000.pru: PRU rproc node /ocp/pruss_soc_bus@4a326004/pruss@0/pru@38000 probed successfully [ 16.320431] usb 1-1: new high-speed USB device number 2 using musb-hdrc [ 53.040523] random: crng init done [ 53.044007] random: 7 urandom warning(s) missed due to ratelimiting When I use "lsusb" I see this, and I'm unable to use the modem: Bus 001 Device 002: ID 05c6:9008 Qualcomm, Inc. Gobi Wireless Modem (QDL mode) LSMOD shows this: root@target:~# lsmod Module Size Used by pru_rproc 20480 0 musb_dsps 20480 0 pruss_intc 16384 1 pru_rproc musb_hdrc 98304 1 musb_dsps udc_core 28672 1 musb_hdrc pruss 16384 1 pru_rproc phy_am335x 16384 2 usbcore 204800 1 musb_hdrc phy_generic 16384 1 phy_am335x usb_common 16384 5 phy_am335x,udc_core,musb_hdrc,musb_dsps,usbcore phy_am335x_control 16384 1 phy_am335x pm33xx 16384 0 snd_soc_simple_card 16384 0 snd_soc_simple_card_utils 16384 1 snd_soc_simple_card wkup_m3_rproc 16384 1 wkup_m3_ipc 16384 1 pm33xx remoteproc 40960 3 pru_rproc,wkup_m3_rproc,wkup_m3_ipc omap_aes_driver 24576 0 crypto_engine 16384 1 omap_aes_driver omap_crypto 16384 1 omap_aes_driver omap_sham 28672 0 ti_emif_sram 16384 1 pm33xx pruss_soc_bus 16384 0 rtc_omap 20480 2 musb_am335x 16384 0 omap_wdt 16384 0 at24 16384 0 sch_fq_codel 20480 1 However, if I don't plug in the device until AFTER the system boots and I login, then I see the cdc_wdm driver is gets registered and the cdc-wdm0 device is created: root@target:~# [ 60.630559] usb 1-1: new high-speed USB device number 2 using musb-hdrc [ 60.993246] usbcore: registered new interface driver cdc_wdm [ 61.013436] qmi_wwan 1-1:1.2: cdc-wdm0: USB WDM device [ 61.038279] qmi_wwan 1-1:1.2 wwan0: register 'qmi_wwan' at usb-musb-hdrc.1-1, WWAN/QMI device, be:ce:e7:34:15:d8 [ 61.059967] usbcore: registered new interface driver qmi_wwan LSUSB shows me this, and I'm able to use the modem: root@target:~# lsusb Bus 001 Device 002: ID 1bc7:1040 Telit Wireless Solutions LSMOD shows this: root@target:~# lsmod Module Size Used by qmi_wwan 28672 0 cdc_wdm 20480 1 qmi_wwan usbnet 32768 1 qmi_wwan pru_rproc 20480 0 pruss_intc 16384 1 pru_rproc pruss 16384 1 pru_rproc musb_dsps 20480 0 musb_hdrc 98304 1 musb_dsps udc_core 28672 1 musb_hdrc usbcore 204800 4 usbnet,qmi_wwan,cdc_wdm,musb_hdrc phy_am335x 1[ 78.790878] random: crng init done [ 78.799335] random: 7 urandom warning(s) missed due to ratelimiting 6384 2 phy_generic 16384 1 phy_am335x usb_common 16384 5 phy_am335x,udc_core,musb_hdrc,musb_dsps,usbcore phy_am335x_control 16384 1 phy_am335x pm33xx 16384 0 snd_soc_simple_card 16384 0 snd_soc_simple_card_utils 16384 1 snd_soc_simple_card wkup_m3_ipc 16384 1 pm33xx wkup_m3_rproc 16384 1 remoteproc 40960 3 pru_rproc,wkup_m3_rproc,wkup_m3_ipc omap_aes_driver 24576 0 crypto_engine 16384 1 omap_aes_driver omap_crypto 16384 1 omap_aes_driver omap_sham 28672 0 pruss_soc_bus 16384 0 ti_emif_sram 16384 1 pm33xx rtc_omap 20480 2 at24 16384 0 omap_wdt 16384 0 musb_am335x 16384 0 sch_fq_codel 20480 1 And pointers on how I can get the drivers (cdc_wdm, qmi_wwan, etc) setup so the USB modem is recognized at powerup instead of having to plug in the device after powerup would be greatly appreciated. Thanks in advance! -Leo
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