PCIe hot-plug iMX8MM Support

[raajeshk88]

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

[igorpadykov]

Hi Raajesh

unfortunately hardware does not supports it.

Best regards
igor
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[raajeshk88]

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

[igorpadykov]

Hi Raajesh

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

Best regards
igor

[zhangjunsheng]

Hi Igor:

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

Best regards.

Johnson

[weidong_sun]

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