TUSB4041I: Want to get information how to do the USB Hub compliance test..

HI Ernest:

    Do you use AM5728 as well? What can you see with lsusb command? 

Regards

Brian

Hi Brian,

No, Customer use other application processor with Linux.

For lsusb result, let me check them first and get back to you.

Best wishes,

Ernest

lsusb result:

root@dq1:~# lsusb -t
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc2/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
|__ Port 4: Dev 3, If 0, Class=Vendor Specific Class, Driver=smsc95xx, 480M

root@dq1:~# lsusb
Bus 001 Device 003: ID 0424:9e00 Microchip Technology, Inc. (formerly SMSC) LAN9500A/LAN9500Ai
Bus 001 Device 002: ID 0451:8142 Texas Instruments, Inc. TUSB8041 4-Port Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

ok, let me check with DK if these commands can work for other SOC with Linux system

Regards

Brian

Hi Brian,

Gentle Reminder,
Do you have any update for this question?

Bests, 
Ernest

Hi Emest:

   DK said  it was almost 10 years ago and the command  may not valid.

    here is another document for  TI  Linux system  about  USb2 test mode.

UsbgeneralpageLinuxCore - Texas Instruments Wiki.pdf

Best

Brian

 Here is the instruction for UBS2 compliance test.

USB2 compliance test section,

• Reference to section 11.24.2.13 Set Port Feature of the USB2.0 spec
• 

• When the feature selector is PORT_TEST, the most significant byte (bits 15..8) of the wIndex field is the selector identifying the specific test mode.

  Table 11-24 lists the test selector definitions.

• 

Thank you Brian,

Let me customer know this answers and get back to you if they have any further question.

Thank you.

change status to waiting from customer

Hi Brian,

Customer said they have in trouble to do further.

With their understanding, the PDF file introduce to make test pattern by using "/sys/kernel/debug/musb-hdrc.../testmode " on page 6~7,
but their board does not exist musb-hrcd folder, so they have to create config, but the guidance has different Kernel version and it is AM335x based.

Could you guide us how to make below sysfs with their kernel version of 5.15.160 ?
You could gave comparison kernel config only have differences.

"/sys/kernel/debug/musb-hdrc.../testmode "

best regards, 
Ernest

Hi Emest::

          The above PDF may only good for USB host test. For hub test,  you may  need to  SET PORT Feature  from Linux host 

or you you can look at the following  example code.

USB-Hub-Linux-Examples/General USB Examples/USB High Speed Electrical Test/USB_Linux_HSET.c at master · MicrochipTech/USB-Hub-Linux-Examples · GitHub

Best

Brian

any update?

Hi Brian,

Since customer is checking and evaluating the code, please allow some time.

Bests,

Ernest

ok, just keep update.

Best

brian

I built USB_Linux_HSET and delivered it to the hw team.
I will update after receiving the test results.
Sorry for the late reply.