[ts-7000] serial USB syntek prolific not work ts-7558

["wawan_wiratno" <>]

Hi All,

I just got my board ts-7558
every thinks works fine except usb serial driver.
I have GSM modem which is use prolific driver.


ts7500:~# lsusb 
Bus 002 Device 028: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 002 Device 001: ID 0000:0000  
Bus 001 Device 001: ID 0000:0000  
ts7500:~# dmesg | grep ttyUSB
[ 2043.130000] usb 2-1: generic converter now attached to ttyUSB0
[ 2277.500000] usb 2-2: generic converter now attached to ttyUSB1
[ 2280.130000] generic ttyUSB0: generic converter now disconnected from ttyUSB0
[ 2446.250000] generic ttyUSB1: generic converter now disconnected from ttyUSB1
[ 2448.770000] usb 2-1: generic converter now attached to ttyUSB0
[ 2659.500000] generic ttyUSB0: generic converter now disconnected from ttyUSB0
[ 5050.990000] usb 2-1: generic converter now attached to ttyUSB0
[ 5513.820000] generic ttyUSB0: generic converter now disconnected from ttyUSB0
[ 6014.740000] usb 2-1: generic converter now attached to ttyUSB0
[ 6094.300000] generic ttyUSB0: generic converter now disconnected from ttyUSB0
[ 6200.240000] usb 2-1: generic converter now attached to ttyUSB0
ts7500:~# lsmod
Module                  Size  Used by
ftdi_sio               20168  0 
usbserial              19056  1 ftdi_sio
smsc9500               56484  0 
smscusbnet             16396  1 smsc9500
g_ether                17744  0 
str8100_udc            13572  1 g_ether
ohci_hcd               14372  0 
sd_mod                 15504  0 
usb_storage            23072  0 
scsi_mod               55372  2 sd_mod,usb_storage
ehci_hcd               22028  0 
usbcore                74300  7 
ftdi_sio,usbserial,smsc9500,smscusbnet,ohci_hcd,usb_storage,ehci_hcd

all driver and modules load correctly
but when I used minicom to test the modem, it initialize forever, stuck
tried using manual echo "AT \015" > /dev/ttyUSB0 nothing happened
baudrate and all serial setting already correct

so, where I do I missed?
Please Help

Br
Wawan



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