Re: enabling aspm on ati radeon

[Phillip Susi <psusi@ubuntu.com>]

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On 5/17/2013 3:52 PM, Bjorn Helgaas wrote:
> I just sent a patch to make lspci decode all possible values
> there. In the PCIe r2.1 spec, only 1 ("L0s") and 3 ("L0s and L1")
> were defined.  The r3 spec added 0 ("not supported") and 2 ("L1"),
> but lspci hadn't quite kept up.

So do you still want the lspci -xxxs output, or was that just to
answer the question of why it said unknown instead of not supported?
Are we then back to no idea?

I notice a number of functions in drivers/pci/pcie/aspm.c that look
like they need used to configure aspm.  The radeon driver does not
appear to call any of them ( grep for aspm came up with nothing ).
Could that be why?  I can't find anything under Documentation/ about
what a driver needs to do to enable aspm.



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