Resetting PCI-E devices after linux boot
Stefan Roese
sr at denx.de
Thu Apr 15 20:59:27 EST 2010
Hi Ben,
On Thursday 15 April 2010 00:25:23 Benjamin Herrenschmidt wrote:
> It should be possible to get that working, but I suspect not without
> some code changes. I know the current PCIe hotswap driver has ACPI hooks
> that would need to be replaced by appropriate hooks into the powerpc
> code to perform the right resource manipulation etc...
>
> We do PCIe hotswap on IBM pSeries, but this is using specific FW
> interfaces for which we have a dedicated PCI hotplug driver.
>
> Can the slot power be SW controlled on the Canyonlands PCIe slot ?
No. I just checked the schematics. PCIe power supply is directly connected to
the board power supplies.
Cheers,
Stefan
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