PCIe hotplug support

[TrinathK]

Hi

I have a PCIe communication between ls1043ardb (layerscape board as Root complex) and Beagleboard x15 (as endpoint). I enabled PCIe hotplug in kernel configuration of ls1043ardb.

And i have already used "remove" and "rescan" and everything is working fine. I can able to detect my endpoint after rescan. but sometimes BARs are not being assigned.

Firstly, how may i know if a board support hotplug feature or not. In reference manual of ls1043 and ls1046, nothing is mentioned about pcie hotplug. Does ls1043 and ls1046 support hotplug feature ?

Also as per my understanding, hardware support is also required for hotplug feature to work. please explain on it.

Thanks in advance.

[ufedor · Accepted solution]

> Does ls1043 and ls1046 support hotplug feature ?

The processors do not support Hot-Plug.

References:

QorIQ LS1043A Reference Manual, 28.4.2.45.2 Function

LS1046A Reference Manual, 25.4.2.60.2 Function