> On 17 Mar 2012, at 19:22, Ben Kochie<superq@...> wrote:
>> I'm testing my net6501-70 boxes right now with Vyatta Linux
>> The cpufreq modules don't seem to be loading properly. This is
>> likely because it can't find the ACPI table from the BIOS to setup
>> the correct modes for the Atom E680. I tried loading some of the
>> modules manually, but they don't seem to work.
>> The CPU runs at about 115F which isn't too bad, but it would be
>> nice if speestep worked. Has anyone had any luck with this? Maybe
>> it's possible to load the required tables from userspace.
> The 6501 BIOS has no ACPI and there are no plans to implement it.
> Without ACPI you can't get cpufreq on these newer processors.
> Basically, you can't use cpufreq scaling on the 6501 and won't be
> able to for the foreseeable future.
Although it's not highest priority, I am looking into implementing ACPI,
it's not that complicated as long as it's just the tables and not the
advanced power management....
But despite having all kind of docs on the Atom E6xx series, including
BIOS writers guide under RSNDA, I haven't managed yet to get the P-State
And there isn't that much power to save anyway, the Atom core itself is
using less power than the memory and io controllers....