TUSB7320: I transmit big size file(Ex.128MByte) with USB Disk(USB3.0 or USB2.0),erro will happen(the error rate is about 95%). When I transmit big size file(Ex.32MByte) with USB Disk(USB3.0 or USB2.0),erro will happen(the error rate is about 1%).

Question：

Cherry Zhou：

Hi,

We're looking into your case and will give updates ASAP.

Thanks

,

? ?：

Hi Cherry Zhou

Thank you for your quick response.
When I check the MAX_PORTS of Host Controller Structural Parameters 1,
For the TUSB7320, this field is 04h to indicate that 4 ports are supported.

But I think TUSB7320 is only support 2 ports.
Could you tell me why?

Thanks and best regards

,

Cherry Zhou：

Hi,

? ? said:So I think the error is between the TUSB7320 and USB Disk(USB3.0 or USB2.0).

It's known issue to have errors when transferring balk files for Linux system. 

? ? said:But I can not find the source code,could you tell me how to get the source code?

Please allow some time for us to check if we have any source code other than firmware on TI.com.

? ? said:When I check the MAX_PORTS of Host Controller Structural Parameters 1,
For the TUSB7320, this field is 04h to indicate that 4 ports are supported.

But I think TUSB7320 is only support 2 ports.
Could you tell me why?

Will get back to you ASAP.

Thanks

,

? ?：

Hi Cherry Zhou

Thank you for your quick response.
>>>>So I think the error is between the TUSB7320 and USB Disk(USB3.0 or USB2.0).

>>It's known issue to have errors when transferring balk files for Linux system. 

→If you have any fixed method,please tell me.

>>>>But I can not find the source code,could you tell me how to get the source code?

>>Please allow some time for us to check if we have any source code other than firmware on TI.com.

→If you find the the source code,please send to me.

>>When I check the MAX_PORTS of Host Controller Structural Parameters 1,
>>For the TUSB7320, this field is 04h to indicate that 4 ports are supported.

>>But I think TUSB7320 is only support 2 ports.
>>Could you tell me why?
→Now I am debugging with the linux log,I guess the 2 ports for the USB3.0 HUB and the 2 ports for the USB2.0 HUB.
    2 ports for the USB3.0 HUB + the 2 ports for the USB2.0 HUB = 4 ports
    Is it right?

    If it is right,I think it does not violate the errata.
    As the message of lspci command,the register 0xE0(USB Control Register Description) is 0x00.
    So the register bits( PORT3_DIS and PORT4_DIS) is 0x00.
——————————————————————————————————————–
    PORT4_DIS†   USB Port 4 Disable. When this bit is set to ‘1’, port 4 of the TUSB73X0 is
    disabled. For the TUSB7320 Port 4 is not present and this bit has no effect.

——————————————————————————————————————–
    And the Linux source code does not set the  0xE0(USB Control Register Description).
    Because the errata is described below.
    So I think it does not violate the errata.
    Is it right?    
——————————————————————————————————————–
   Problem: Accesses to the PORTSC or PORTPMSC registers of a port that has been disabled
    via the PORT(x)_DIS bit at PCI configuration address 0xE0 may cause the
    controller to become unresponsive.
    Work Around: Customers should ensure that no access is attempted to the PORTSC or PORTPMSC
    registers of ports that have been disabled via the PORT(x)_DIS bits. The TI-provided
    driver for this device will not attempt to access disabled ports, but it is important that
    custom xHCI drivers and xHCI-aware BIOS implementations also do not attempt to
    access disabled ports.
——————————————————————————————————————–

Thanks and best regards

,

Cherry Zhou：

Hi,

TUSB7320 is the same design with TUSB7340 just removed port 3 and 4. We need to check with our design if port 3 and 4 got disabled or doing something else.

,

? ?：

Hi Cherry Zhou,

>>TUSB7320 is the same design with TUSB7340 just removed port 3 and 4. We need to check with our design if port 3 and 4 got disabled or doing something else.
→Thank you for your check.

>>It's known issue to have errors when transferring balk files for Linux system. 
→If you know,could you tell me when transfering big size file from which version of Linux kernel?
   And the file size when transfering? 

Thanks and best regards

,

Cherry Zhou：

? ? said:If you know,could you tell me when transfering big size file from which version of Linux kernel?
   And the file size when transfering? 

  Linux kernel is V5.10 , you were transferring Video files from camera, but not sure what size of the file.

  For 2nd question, We will update on Tuesday.

,

Cherry Zhou：

Hi,

For 2nd question, TUSB7320 is the same die of TUSB7340,justn different M&B. So the MAX_PORTS of Host Controller Structural Parameters is same for both devices. 04h mean real 4 ports. Either 4 USB3 ports or 4 USB2 ports.

,

? ?：

Hi Cherry Zhou,

Thank you for your quick response.
I am sorry,I resummarize the question with no.
No①>>Linux kernel is V5.10 , you were transferring Video files from camera, but not sure what size of the file.
→Thank you for your infomation.
  Do you have the method to resolve the problem?

No②>>For 2nd question, TUSB7320 is the same die of TUSB7340,justn different M&B.
>>So the MAX_PORTS of Host Controller Structural Parameters is same for both devices. 04h mean real 4 ports. Either 4 USB3 ports or 4 USB2 ports.
→Thank you for your infomation.
  I check the datasheet about the Host Controller Structural Parameters 1.
  [MAX_PORTS] is discribed in Table 6-6. HC Structural Parameters 1 Description as below.
  ——————————————————————————–
  For the TUSB7340, this field is 08h to indicate that 8 ports are supported.
  For the TUSB7320, this field is 04h to indicate that 4 ports are supported.
  This field also indicates the number of sets of port registers that are addressable in the Operational Register Space.
  ——————————————————————————–
  I think that there are 2 USB3 ports and 2 USB2 ports in the TUSB7320.
  So does 04h mean 2 USB3 ports + 2 USB2 ports = 4 ports?
 
No③About the errata.
  As the message of lspci command,the register 0xE0(USB Control Register Description) is 0x00.
  So the register bits( PORT3_DIS and PORT4_DIS) is 0x00.
  ——————————————————————————————————————–
    PORT4_DIS†   USB Port 4 Disable. When this bit is set to ‘1’, port 4 of the TUSB73X0 is
    disabled. For the TUSB7320 Port 4 is not present and this bit has no effect.
  ——————————————————————————————————————–
  And the Linux source code does not set the  0xE0(USB Control Register Description).
  Because the errata is described below.
  So I think it does not violate the errata.
  Is it right?    
  ——————————————————————————————————————–
   Problem: Accesses to the PORTSC or PORTPMSC registers of a port that has been disabled
    via the PORT(x)_DIS bit at PCI configuration address 0xE0 may cause the
    controller to become unresponsive.
    Work Around: Customers should ensure that no access is attempted to the PORTSC or PORTPMSC
    registers of ports that have been disabled via the PORT(x)_DIS bits. The TI-provided
    driver for this device will not attempt to access disabled ports, but it is important that
    custom xHCI drivers and xHCI-aware BIOS implementations also do not attempt to
    access disabled ports.
  ——————————————————————————————————————–

No④About source code.
  The TI-provided driver for this device will not attempt to access disabled ports, but it is important that
  custom xHCI drivers and xHCI-aware BIOS implementations also do not attempt to access disabled ports.

  But I can not find the source code,could you tell me how to get the source code?
  I want to reference it.

Thanks and best regards

,

Cherry Zhou：

Hi,

? ? said:  Do you have the method to resolve the problem?

Sorry, please check with linux community.

And please see the link below for more assistance on your issue:

https://e2e.ti.com/support/interface-group/interface/f/interface-forum/1270174/tusb7320-when-transmitting-big-size-file-ex-32mbyte-with-usb-disk-usb3-0-or-usb2-0-there-will-be-some-errors

,

Cherry Zhou：

Hi,

? ? said: So does 04h mean 2 USB3 ports + 2 USB2 ports = 4 ports?

4 ports mean 4 physical ports from  port1 to port4, not 2 USB3 ports and 2 USB2 ports.

? ? said:  So I think it does not violate the errata.
  Is it right?    

I agree with you, port 3 and port 4 are not disabled, it's not violate the errata.

? ? said: But I can not find the source code,could you tell me how to get the source code?
  I want to reference it.

We don't have source code to share.

Thanks.

,

? ?：

Hi Cherry Zhou,

Thank you for your quick response.

>>Do you have the method to resolve the problem?
>>Sorry, please check with linux community.
→I have no experience about linux community.
  Could you give any url about TSUB7320 about linux community?

>>For Q2: 4 ports mean 4 physical ports from  port1 to port4, not 2 USB3 ports and 2 USB2 ports.
→I knew it and methioned your share message.
  I am sorry to question again.
  But how about to explain the datasheet below about TUSB7340.(8 ports are supported.)
 
  [MAX_PORTS] is discribed in Table 6-6. HC Structural Parameters 1 Description as below.
  ——————————————————————————–
  For the TUSB7340, this field is 08h to indicate that 8 ports are supported.
  For the TUSB7320, this field is 04h to indicate that 4 ports are supported.
  This field also indicates the number of sets of port registers that are addressable in the Operational Register Space.
  ——————————————————————————–

>>for Q3: I agree with you, port 3 and port 4 are not disabled, it's not violate the errata.
→I got it.

>>For Q4: We don't have source code to share.
→About the errata,TI-provided driver is metioned.
  Could you privode it to me? Is it windows driver?
  —————————————————————
  The TI-provided driver for this device will not attempt to access disabled ports,
  but it is important that custom xHCI drivers and
  xHCI-aware BIOS implementations also do not attempt to access disabled ports.
  —————————————————————

>>Q5:I will check if we have any source code other than firmware on TI.com.
→If you some source code,please give it to me.

Thanks and best regards

,

Cherry Zhou：

我们已转达给工程师，请关注英文论坛的答复。

,

Cherry Zhou：

? ? said:→I have no experience about linux community.
  Could you give any url about TSUB7320 about linux community?

this is a good source:

https://linux-hardware.org/?id=pci:104c-8241-1849-8241

? ? said:→I knew it and methioned your share message.
  I am sorry to question again.
  But how about to explain the datasheet below about TUSB7340.(8 ports are supported.)

you are right, 4 ports means 2 USb3 ports and 2 USB2 ports.

? ? said:  Could you privode it to me? Is it windows driver?
  —————————————————————
  The TI-provided driver for this device will not attempt to access disabled ports,
  but it is important that custom xHCI drivers and
  xHCI-aware BIOS implementations also do not attempt to access disabled ports.
  —————————————————————

>>Q5:I will check if we have any source code other than firmware on TI.com.
→If you some source code,please give it to me.

Unfortunately we don't have any source code that can share.