i.MX ProcessorsのトピックIMX8MQ USB Wakeup

IMX8MQ USB Wakeup

Jack19 — Tue, 14 May 2024 01:21:28 GMT

Hello all,

I am attempting to use USB to wake from a low power mode on an MIMX8MQ6CVAHZAA with i.MX Linux Kernel 5.4. To test, I am using the following procedure with a USB keyboard:

# check that the keyboard device wakeup is enabled
$ cat /sys/bus/usb/devices/1-1/power/wakeup
enabled

# suspend system
$ echo deep > /sys/power/state

I expect the system to resume on a key press, but nothing happens.

I am aware of erratum e11231 from this document applicable to the processor. A related NXP community post (user @RayW8d had a very similar goal) indicates that there is a patch for e11231. However, it does not appear that this patch was made public.

Please advise on how to achieve this wakeup functionality via USB.

Thank you in advance.

Re: IMX8MQ USB Wakeup

Rita_Wang — Fri, 17 May 2024 02:58:20 GMT

Dear Jack,

@Jack19 I already email the patches to you, please have a check.

Wish you have a nice day

Best Regards

Rita

Re: IMX8MQ USB Wakeup

Roman_Loz — Mon, 17 Jun 2024 12:47:37 GMT

Hi,
I tried this on imx8mp and had the same result (nothing).
Could you please help me too?

Re: IMX8MQ USB Wakeup

Rita_Wang — Wed, 19 Jun 2024 10:18:13 GMT

@Roman_Loz I email to you, please have a check.

Re: IMX8MQ USB Wakeup

Roman_Loz — Wed, 19 Jun 2024 13:03:56 GMT

Thank you for your help.
I am trying to wakeup imx8mp (not imx8mq) and the Kernel based on tag lf-6.1.22-2.0.0.
Are there any patches for that?

Re: IMX8MQ USB Wakeup

Rita_Wang — Tue, 25 Jun 2024 02:34:08 GMT

Hi @Roman_Loz ,

We do not have this patch for the i.MX8MP, but you can try to refer to the patch for the i.MX8MQ.

Wish you have a nice day

Best Regards

Rita

回复： IMX8MQ USB Wakeup

ZRay — Mon, 14 Oct 2024 01:17:49 GMT

Hi,

Does this method also work on desktop?
I have the same need on desktop and would like some help.

Thank you.

回复： IMX8MQ USB Wakeup

Jack19 — Tue, 15 Oct 2024 15:14:59 GMT

Hi @ZRay,
Can you clarify what you mean by "on desktop"? Is this related to an NXP product?
Thanks

回复： IMX8MQ USB Wakeup

ZRay — Wed, 16 Oct 2024 01:11:00 GMT

Hi @Jack19,

My customer is using i.MX8MQ with nxp-desktop (Kernel version 5.15.32)

They want to resume the system via USB, but it seems that patch is needed.

Thank you.

Re: IMX8MQ USB Wakeup

antoluk — Thu, 12 Dec 2024 11:21:25 GMT

Hello, Could you please send this patches to me too?

Re: IMX8MQ USB Wakeup

huangbaokang — Tue, 13 Jan 2026 05:34:38 GMT

Hello, Could you please send this patches to me too? we need this patch too.

Re: IMX8MQ USB Wakeup

huangbaokang — Wed, 14 Jan 2026 01:14:17 GMT

@Rita_Wang have any feedback ?