Assuming the board/SoC is working correctly the /dev/ttyUSB0 port will only be available for about 90 seconds after power up. You need to use the python script to start the initial bootloader installed during this period. The log below suggests a hardware problem. Yang Zhang may be able to find you another board (we are awaiting more from CircuitCo).
George
On Sep 4, 2015, at 11:31 AM, Amit Khare amit.khare@linaro.org wrote:
Hi, I am trying to flash my early access hikey board without success. I am trying to boot the board in "install bootloader" mode with pin 1-2 and 3-4 installed. The USB device is getting registered but gets disconnected. I can see others have faced similar issue but i can't find a fix for this problem
dmesg log -
[ 6888.363849] usb 1-1.1: Product: \xffffffe3\xffffff84\xffffffb0\xffffff84\xffffffb0\xffffffe3\xffffff8c\xffffffb2\xffffff8c\xffffffb2\xffffffe3\xffffff94\xffffffb4\xffffff94\xffffffb4\xffffffe3\xffffff9c\xffffffb6\xffffff9c\xffffffb6\xffffffe3\xffffffa4\xffffffb8\xffffffa4\xffffffb8 [ 6888.363853] usb 1-1.1: Manufacturer: \xffffffe4\xffffff95\xffffff87\xffffff95\xffffff87\xffffffe4\xffffff95\xffffff8e\xffffff95\xffffff8e\xffffffe4\xffffffa5\xffffff8e\xffffffa5\xffffff8e [ 6888.364651] option 1-1.1:1.0: GSM modem (1-port) converter detected [ 6888.364923] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0 [ 6888.837543] usb 1-1.1: USB disconnect, device number 11 [ 6888.837936] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [ 6888.837996] option 1-1.1:1.0: device disconnected
-- Regards, Amit Khare _______________________________________________ Dev mailing list Dev@lists.96boards.org https://lists.96boards.org/mailman/listinfo/dev