Amit,

The 90 seconds delay is key here. In "install bootloader" mode, you must make sure to start the USB download process within 90 seconds of powering up hikey.

The log you attached makes sense to me. Everything are reasonable. Here for your reference, is on mine board and PC. In this case, I should run 'hisi-idt.py' before [14495.204951].

[14417.953271] usb 3-6: new full-speed USB device number 6 using xhci_hcd

[14417.971411] usb 3-6: New USB device found, idVendor=12d1, idProduct=3609

[14417.971420] usb 3-6: New USB device strings: Mfr=1, Product=4, SerialNumber=0

[14417.971425] usb 3-6: 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

[14417.971429] usb 3-6: Manufacturer: \xffffffe4\xffffff95\xffffff87\xffffff95\xffffff87\xffffffe4\xffffff95\xffffff8e\xffffff95\xffffff8e\xffffffe4\xffffffa5\xffffff8e\xffffffa5\xffffff8e

[14418.066561] usbcore: registered new interface driver usbserial

[14418.066569] usbcore: registered new interface driver usbserial_generic

[14418.066578] usbserial: USB Serial support registered for generic

[14418.078402] usbcore: registered new interface driver option

[14418.078412] usbserial: USB Serial support registered for GSM modem (1-port)

[14418.078523] option 3-6:1.0: GSM modem (1-port) converter detected

[14418.078594] usb 3-6: GSM modem (1-port) converter now attached to ttyUSB0

[14495.204951] usb 3-6: USB disconnect, device number 6

[14495.205234] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0

[14495.205272] option 3-6:1.0: device disconnected

-Guodong

On 4 September 2015 at 20:01, George Grey <george.grey@linaro.org> wrote:

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

_______________________________________________
Dev mailing list
Dev@lists.96boards.org
https://lists.96boards.org/mailman/listinfo/dev