From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?ISO-8859-2?Q?Rafa=B3_Bilski?= Subject: Re: [PATCH] Longhaul - Only for "Powersaver" Date: Thu, 13 Jul 2006 08:59:24 +0200 Message-ID: <44B5EF4C.1000906@interia.pl> References: <44B5E0DD.9090109@interia.pl> <20060713062723.GB12807@redhat.com> Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20060713062723.GB12807@redhat.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@lists.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=m.gmane.org+glkc-cpufreq=m.gmane.org@lists.linux.org.uk Content-Type: text/plain; charset="iso-8859-1" To: Dave Jones Cc: cpufreq@lists.linux.org.uk > It's really a BIOS failing. The CPU cares nothing about how it's driven, > but if the DSDT lacks methods to do anything interesting, nothing happens. >=20 No it isn't. I have checked FADT and DSDT and everything is OK. David spend last 2 days checking changes in code that I send him. ACPI C3 is working on EPIA 800. It really don't work for BCR2 MSR. Frequency is ONLY changed on=20 "halt" instruction. NEVER on ACPI C3. Maybe it works on lower ACPI states, but if I understand ACPI spec correcly only C3 state is good for this. Worst part is that this is mentioned in documentation: AUTOHALT only. Information about Longhaul is stripped from later datasheets. Probably=20 designers from Centaur add support for ACPI later. I didn't know that=20 AUTOHALT don't mean ACPI C3 capable. There is SLEEP signal and probably this signal is used to put processor in C3 state. Sorry. I'm still learning. Rafa=B3 -------------------------------------------------------------------- 12 000 SMS-ow gratis! Promocja na http://link.interia.pl/f1971