Re: Issues with AHCI and SATAII using JMD360

[Moritz Heiber <moe@lunar-linux.org>]

On Sun, 07 May 2006 22:23:59 +0900
Tejun Heo <htejun@gmail.com> wrote:

> The digit in the middle is the SPD limit and 0 means no limit.
> Hmm... wait, this is a hitachi disk.  Have you tried the feature
> tool?  Hitachi limits the spd of the harddrive tso 1.5 gbps, probably
> for compatibility reasons, and allows users to enable it with the
> feature tool.
> 
> http://www.hitachigst.com/hdd/support/download.htm#FeatureTool

That did it. Thank you very much Tejun. I promise I'll be looking for
such a tool next time before I bother any of the kernel related
mailinglists. My Hitachi is now officially running at 3.0Gbps .. and I
even managed to enable some of the other features (Accustic Management
and Power Management).

As a sidenote: Hitachi also provides bootable CD images. Very
convenient!

> > Given your patch though .. your git-based code looks much simpler. I
> > wonder if that is a good or a bad thing and wether I should try a
> > more recent kernel .. (?)
> 
> The patch was pulled from libata devel tree.  I was being lazy again
> and didn't test it on 2.6.16.14.  :p  However, I can assure you
> libata doesn't play much role in PHY spd configuration.

Nevermind here, I'm a long term C lover .. so it wasn't all that
complicated to adjust the patch. Besides, you've been very kind in
providing a patch at least .. since otherwise I'd have to dig one up
myself (and I am lazy as well ;-).

Thanks again.

Regards,

Moritz