What Intel chipsets do include "AHCI chipset"?
I guess you are talking about the SATA controller of certain new Intel
chipsets, aren't you?
Just recently I noticed that my new notebooks SATA controller won't work
with the libata Intel ICH* drivers, though ICH8 was mentioned in the
description.
My SATA controller identifies as "Intel Corporation Mobile SATA AHCI
Controller" and seems to work with libata AHCI.
I was wondering when support for this controller will be added through
the ICH* driver, but is it possible that this SATA controller is
supposed to be used with the standard AHCI driver?
The chipset is an i965 (ICH8M).
Peter
John Fremlin wrote:
Tejun Heo has made an excellent patch for saving power with the AHCI
chipset. It saves about 1 W on my Thinkpad X60s.
This patch will stop the ports when they are idle. To turn it on,
echo 1 > /sys/module/libata/parameters/powersave
This is very different from the patch I posted a while ago turning on
a few bits in the CMD register (ALPE and ASP) and which Intel is
apparently now trying. That only saves around 250mW. Tejun's patch
saves about 1 W. It should also make the ALPE and ASP stuff irrelevant
because it performs the same operation in software where better
information about usage is (theoretically) available.
I have updated the patch for 2.6.22-rc4. That is the extent of my
involvement - if it works, thank Tejun Heo. But problems are quite
likely to have been introduced by my clumsy update, so if it doesn't
work, blame me first.
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