hi everyone, i have a lte module in my board. here is the kernel msg when it start.
[ 4.240598] ehci_fsl_bus_suspend ends, DR
[ 4.244690] ehci_fsl_bus_suspend begins, Host 1
[ 4.249799] ehci_fsl_bus_suspend ends, Host 1
[ 20.186121] ehci_fsl_bus_resume begins, Host 1
[ 20.205663] ehci_fsl_bus_resume ends, Host 1
[ 20.455594] usb 2-1: new high speed USB device number 2 using fsl-ehci
[ 20.609013] option 2-1:1.0: GSM modem (1-port) converter detected
[ 20.616424] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB0
[ 20.623864] option 2-1:1.1: GSM modem (1-port) converter detected
[ 20.631193] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB1
[ 20.638763] option 2-1:1.2: GSM modem (1-port) converter detected
[ 20.646002] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB2
[ 20.653556] option 2-1:1.3: GSM modem (1-port) converter detected
[ 20.660779] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB3
[ 20.668413] Discover the 4th interface for U8300 NDIS.
[ 20.674226] option 2-1:1.5: GSM modem (1-port) converter detected
[ 20.681516] usb 2-1: GSM modem (1-port) converter now attached to ttyUSB4
[ 22.143027] usb 2-1: USB disconnect, device number 2
[ 22.149091] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0
[ 22.157528] option 2-1:1.0: device disconnected
[ 22.162593] option: option_instat_callback: error -108
[ 22.168605] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1
[ 22.177062] option 2-1:1.1: device disconnected
[ 22.182124] option: option_instat_callback: error -108
[ 22.188112] option1 ttyUSB2: GSM modem (1-port) converter now disconnected from ttyUSB2
[ 22.196527] option 2-1:1.2: device disconnected
[ 22.201582] option: option_instat_callback: error -108
[ 22.207640] option1 ttyUSB3: GSM modem (1-port) converter now disconnected from ttyUSB3
[ 22.216008] option 2-1:1.3: device disconnected
[ 22.222440] option1 ttyUSB4: GSM modem (1-port) converter now disconnected from ttyUSB4
[ 22.230857] option 2-1:1.5: device disconnected
[ 24.395557] ehci_fsl_bus_suspend begins, Host 1
[ 24.400390] ehci_fsl_bus_suspend ends, Host 1
[ 124.618339] ehci_fsl_bus_resume begins, Host 1
[ 124.635584] ehci_fsl_bus_resume ends, Host 1
[ 125.205555] usb 2-1: new high speed USB device number 3 using fsl-ehci
[ 125.395565] hub 2-0:1.0: unable to enumerate USB device on port 1
[ 127.395557] ehci_fsl_bus_suspend begins, Host 1
[ 127.400666] ehci_fsl_bus_suspend ends, Host 1
[ 135.810419] ehci_fsl_bus_resume begins, Host 1
[ 135.825475] ehci_fsl_bus_resume ends, Host 1
[ 136.075538] usb 2-1: new high speed USB device number 5 using fsl-ehci
[ 136.265553] hub 2-0:1.0: unable to enumerate USB device on port 1
[ 146.265547] ehci_fsl_bus_suspend begins, Host 1
[ 146.270766] ehci_fsl_bus_suspend ends, Host 1
[ 146.361955] ehci_fsl_bus_resume begins, Host 1
[ 146.385537] ehci_fsl_bus_resume ends, Host 1
[ 147.875547] usb 2-1: new high speed USB device number 7 using fsl-ehci
[ 148.065554] hub 2-0:1.0: unable to enumerate USB device on port 1
[ 150.265548] ehci_fsl_bus_suspend begins, Host 1
[ 150.270309] ehci_fsl_bus_suspend ends, Host 1
[ 159.341706] ehci_fsl_bus_resume begins, Host 1
[ 159.365580] ehci_fsl_bus_resume ends, Host 1
the usb is suspend/resume over and over again. then lte device connected/disconnect.
any suggestion?
Hi Jacky
one can check if usb ERR004534, ERR004535 errata are implemented in BSP, i.MX6DQ Errata
http://cache.freescale.com/files/32bit/doc/errata/IMX6DQCE.pdf
note they are fixed in NXP releases described on
Also may be useful to rebuild anew GSM modem driver for used kernel.
Just for test try connection with usb self-powered hub.
Best regards
igor
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