topic Re: PCIe hot-plug iMX8MM Support in i.MX Processors

PCIe hot-plug iMX8MM Support

raajeshk88 — Thu, 14 May 2020 03:26:06 GMT

Hi,

Does iMX8MM support PCIe hot-plug? I saw some previous questions about iMX6 which had contradicting answers as it supports and not supports. Regarding iMX8 https://community.nxp.com/thread/494660 this shows as it does not support but RM shows the registers for hot plug. Could you pleaase help to clarify this since we are in a time crunch for a proposal. Thanks

Re: PCIe hot-plug iMX8MM Support

igorpadykov — Fri, 30 Apr 2021 10:15:22 GMT

Hi Raajesh

unfortunately hardware does not supports it.

Best regards
igor
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Re: PCIe hot-plug iMX8MM Support

raajeshk88 — Thu, 14 May 2020 06:53:14 GMT

Hi Igor,

Thanks for the reply. There is no reference examples but the standard PCIe BSP has the feature enabled. Is my understanding correct.

Regards,

Raajesh K

Re: PCIe hot-plug iMX8MM Support

igorpadykov — Thu, 14 May 2020 08:20:39 GMT

Hi Raajesh

yes standard PCIe BSP is enabled, except PCIe hot-plug.

Best regards
igor

Re: PCIe hot-plug iMX8MM Support

zhangjunsheng — Mon, 26 Apr 2021 08:59:57 GMT

Hi Igor:

How can we verify the PCIe hotplug feature/support by using the NXP demo board (imx8mm-evk)?

Best regards.

Johnson

Re: PCIe hot-plug iMX8MM Support

weidong_sun — Fri, 30 Apr 2021 10:20:35 GMT

I confirmed it with i.mx expert hardware team again.

So clarify it again.

Hardware: PCIe interface doesn't support Hot plug.

software: Not support Hot plug, too.

DON'T USE HOT PLUG feature of PCIe On i.MX8MM.

Up to now, PCIe interface of all imx processors(i.MX6/7/8) doesn't support Hot plug.

Have a nice day!

B.R,

Weidong