i.MX Processors中的主题 Re: iMX7s USB suspend (peripheral mode)

iMX7s USB suspend (peripheral mode)

lucas_lin — Wed, 15 Apr 2020 14:49:58 GMT

Hi,

I set USB OTG to peripheral mode and to run some USB test.

About the suspend mode test.

When the host enter S3, the device (iMX7s) shall enter suspend mode too.

But my device still stay in run mode.

My question is if usb driver received suspend signal from host, can it make whole system enter suspend mode (suspend to ram) or just itself will enter suspend mode?

Thank you for your help.

Re: iMX7s USB suspend (peripheral mode)

Bio_TICFSL — Thu, 16 Apr 2020 14:29:09 GMT

Hello Lucas,

Yes, It will enter to suspend mode.

Regards

Re: iMX7s USB suspend (peripheral mode)

lucas_lin — Fri, 17 Apr 2020 02:41:39 GMT

Hi Bio,

Did you mean that when usb got suspend signal from host and enter suspend state, it will bring whole system enter suspend mode?
If yes, which configurations I need to set?
Because my EV-Board is always stay in run mode even the host already enter to S3.

Thank you.

Re: iMX7s USB suspend (peripheral mode)

Bio_TICFSL — Tue, 21 Apr 2020 13:23:41 GMT

Sorry No, If you don´t tell the board to enter suspend mode it won´t enter.