AM5706: failed to get cmdact in usbDwcDcdRunDEpCmd() of USBDwcDcdInit()

Sung-IL

Part Number: AM5706

Dear Champs,

My customer is trying to implement USB on their custom board, and they found system hang in the USB initialization while polling cmdact.

They found cmdact was not received in below usbDwcDcdRunDEpCmd() function and still polling it.

In C:\ti\pdk_am57xx_1_0_16\packages\ti\drv\usb\src\dwc\usb_dwc_dcd.c,

usbDwcDcdRunDEpCmd() function was not returned and it is still polling cmdact.(382th line in below)

They have no idea why they can not receive cmdact in the usbDwcDcdRunDEpCmd() function in below.

Could you please help how this issue can be debugged?

Do you think there is an issue in their PRCM for USB?

Thanks and Best Regards,

SI.

over 3 years ago

0 Sung-IL over 3 years ago

TI__Mastermind 28755 points

Dear Champs,

Any update on this? Do you need more information?

Thanks and Best Regards,

SI.

0 Stanley Liu over 3 years ago in reply to Sung-IL

TI__Guru 50045 points

Sorry for the late response. We will assign this to the TI expert who can provide more info.

Regards,
Stanley

0 Stanley Liu over 3 years ago in reply to Stanley Liu

TI__Guru 50045 points

Hi,

RTOS USB support is not available. We recommend using A15 with Linux for USB support.

Regards,
Stanley

0 Sung-IL over 3 years ago in reply to Stanley Liu

TI__Mastermind 28755 points

Hi Stanley,

I'm asking about USB HW initialization procedure, not USB driver code.

When I checked spruhj7a(KeyStone II Architecture Universal Serial Bus 3.0) in below,

https://www.ti.com/lit/ug/spruhj7a/spruhj7a.pdf?ts=1592394041801&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252F66AK2H12

I found below initialization procedure and would like to ask what should be checked when cmdack was not received and still polling it.

Please check who will send cmdack and what should be checked when cmdack was not received in the polling loop.

Thanks and Best Regards,

SI.

0 kcastille over 3 years ago in reply to Sung-IL

TI__Mastermind 46712 points

SI,

Is the customer still facing an issue or is this resolved?

Thanks,

Kyle

0 Sung-IL over 3 years ago in reply to kcastille

TI__Mastermind 28755 points

Yes. They resolved it by themselves.

Thanks and Best Regards,

SI.

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AM5706: failed to get cmdact in usbDwcDcdRunDEpCmd() of USBDwcDcdInit()