Linux/AM3351: AM3351 not detected while connecting to PC through USB

Apurva Ankleshwaria89

Part Number: AM3351
Other Parts Discussed in Thread: UNIFLASH

Tool/software: Linux

Hi,

We made a custom board based on AM3351. I have been trying to flash linux kernel on EMMC through USB/RNDIS using Uniflash and following this link. Initially, my PC detected AM335 as a serial port device. Following the link, I tried installing NDIS driver and then changed the IP address from DHCP to static IP. After changing the IP, my device disappeared. Now, device is neither detected as USB nor RNDIS. Also, I am not seeing any C character on UART which ROM generates. Kindly let me know of a possible solution.

Thanks!

over 6 years ago

0 Bin Liu over 6 years ago

TI__Guru**** 169071 points

Hi,

Sorry for the delay, our expert who supports UniFlash is out of the office for a couple weeks.

0 Apurva Ankleshwaria89 over 6 years ago in reply to Bin Liu

Intellectual 460 points

Hi,

I Checked the same on another PC, the device is not being detected.

Tried on another board we have, which is being detected by laptop. However, seeing below logs on UART when flashing is progressing through Uniflash.

U-Boot SPL 2018.01-00228-g4579b130f0-dirty (Nov 22 2018 - 20:47:50)

Timed out in wait_for_bb: status=1000

Trying to boot from USB eth

CCCCCCCC

U-Boot SPL 2018.01-00228-g4579b130f0-dirty (Nov 22 2018 - 20:47:50)

Timed out in wait_for_bb: status=1000

Trying to boot from USB eth

CCCCCCCC

U-Boot SPL 2018.01-00228-g4579b130f0-dirty (Nov 22 2018 - 20:47:50)

Timed out in wait_for_bb: status=1000

Trying to boot from USB eth

CCCCCCCC

Thanks!

0 Bin Liu over 6 years ago in reply to Apurva Ankleshwaria89

TI__Guru**** 169071 points

Hi,

Our expert is still out. But I don't think you should see 'CCCC...' on the serial console if you set the board to boot from USB. Did you set the board SYSBOOT to boot from USB?

0 Apurva Ankleshwaria89 over 6 years ago in reply to Bin Liu

Intellectual 460 points

It was not getting enough power. Thus was not being detected. Issue is resolved now. Thanks anyway.

0 RonB over 6 years ago in reply to Apurva Ankleshwaria89

TI__Mastermind 30546 points

Thanks for getting back and sharing the solution. Much appreciated.

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Linux/AM3351: AM3351 not detected while connecting to PC through USB