lkml.org 
[lkml]   [2012]   [Apr]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [RFC PATCH] PCIe: Add PCIe runtime D3cold support
From
On Tue, Apr 17, 2012 at 1:07 AM, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> Moreover, I really don't think it's a good idea to put PCI Express ports into
> low-power states in general.  It might work on your platform, whatever it is,
> but that doesn't mean it's going to work on every PCI Express system out
> there.  I actually know of a number of such systems where it surely won't
> work at all.

The runtime PM support for PCIe port is not turned on by default, we need

# echo auto > /sys/devices/pcixxxx:xx/<pci id>/power/control

to turn on it. And we will turn on it on system it works. Is this sufficient?

Best Regards,
Huang Ying
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2012-04-17 04:11    [W:0.142 / U:0.252 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site