Hi Amit,
On Tue, Sep 08, 2015 at 03:20:02PM -0700, Kevin Hilman wrote:
I was referring to USB host on the hikey. IOW, you can't use the hikey USB host port and OTG port at the same time. This is a common problem when trying to use wired networking on the hikey using a USB ethernet dongle, for example.
Except Kevin's reminding, below are info as i can know, but not sure if can really resolve this issue :)
When J15's Pin 1-2 and 3-4 are shortcut, bootROM will execute with below flow:
- Scenario 1: If USB_OTG has connected with PC, bootROM will wait for it to download images; But there will have 60s timeout for USB_OTG have no any operation, then bootROM will switch to use UART0 (J16) to download images;
- Scenario 2: If USB_OTG is disconnect with PC, then bootROM will immediately switch to use UART0 (J16) to download images;
So your failure looks like:
- The bootROM gets the timeout quite quickly, then bootROM will quicky disconnect USB_OTG with PC port, finally have no chance to download image from USB_OTG;
if this is root cause, it's may be caused by bad oscillator?! so need change one board.
- If the bootROM has not detect USB_OTG has connected with PC correctly, maybe can change a usb cable for a quick try.
Thanks, Leo Yan
On Tue, Sep 8, 2015 at 11:55 AM, Amit Khare amit.khare@linaro.org wrote:
Thanks Kevin. I dont have anything else plugged to USB on my laptop apart from HiKey usb cable. Moreover, i have tried this with 3 different Linux machine and still have the same issue.
On 9 September 2015 at 00:06, Kevin Hilman khilman@kernel.org wrote:
I saw something similar when I had something plugged into the USB host connector as well as the OTG connector. Be sure have nothing plugged into the USB host connector when trying to (re)flash or use fastboot.
Kevin
On Mon, Sep 7, 2015 at 11:34 PM, Guodong Xu guodong.xu@linaro.org wrote:
Amit,
So it's steadily repeatable on your HiKey. ... That's a phenomena I never heard before. I have 3 boards, and other LT members have at least 4. Also Huawei's team, they have several.
That behavior at this stage in board side is controlled by HiKey Hi6220's ROM code. I am checking with Huawei for what kind of issue this could be.
Or CircuitCo has an explanation for that?
-Guodong
On 8 September 2015 at 14:17, Amit Khare amit.khare@linaro.org wrote:
Hi George, Here's the full log and it seems usbserial support is getting registered.
[33949.970976] usb 1-1.1: new full-speed USB device number 6 using ehci-pci [33950.064568] usb 1-1.1: New USB device found, idVendor=12d1, idProduct=3609 [33950.064583] usb 1-1.1: New USB device strings: Mfr=1, Product=4, SerialNumber=0 [33950.064592] 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 [33950.064599] usb 1-1.1: Manufacturer:
\xffffffe4\xffffff95\xffffff87\xffffff95\xffffff87\xffffffe4\xffffff95\xffffff8e\xffffff95\xffffff8e\xffffffe4\xffffffa5\xffffff8e\xffffffa5\xffffff8e [33950.129406] usbcore: registered new interface driver usbserial [33950.129429] usbcore: registered new interface driver usbserial_generic [33950.129447] usbserial: USB Serial support registered for generic [33950.144501] usbcore: registered new interface driver option [33950.144551] usbserial: USB Serial support registered for GSM modem (1-port) [33950.144690] option 1-1.1:1.0: GSM modem (1-port) converter detected [33950.144787] usb 1-1.1: GSM modem (1-port) converter now attached to ttyUSB0 [33950.541308] usb 1-1.1: USB disconnect, device number 6 [33950.541773] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-19) [33950.541783] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-19) [33950.541789] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-19) [33950.541795] option1 ttyUSB0: usb_wwan_indat_callback: resubmit read urb failed. (-19) [33950.542051] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0 [33950.542091] option 1-1.1:1.0: device disconnected amit@linaro:~$
On 7 September 2015 at 13:54, George Grey george.grey@linaro.org wrote:
One other possibility - I don’t see the usbserial support being registered in Amit’s log. Could it be that you have got the relevant usbserial detection support enabled on your Linux box …. George
> On Sep 7, 2015, at 9:20 AM, Daniel Thompson > daniel.thompson@linaro.org wrote: > > On 06/09/15 04:05, Guodong Xu wrote: >> 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]. > > On Amit's board the logs do look very similar but the disconnect > happens after half a second (rather than 90 seconds). I think that > is what > leads to a guess conclusion there is a hardware fault. > > > Daniel. > _______________________________________________ > Dev mailing list > Dev@lists.96boards.org > https://lists.96boards.org/mailman/listinfo/dev
-- Regards, Amit Khare
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-- Regards, Amit Khare
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