Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264732AbTFLEgV (ORCPT ); Thu, 12 Jun 2003 00:36:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264733AbTFLEgV (ORCPT ); Thu, 12 Jun 2003 00:36:21 -0400 Received: from jadzia.bu.edu ([128.197.20.189]:1957 "EHLO jadzia.bu.edu") by vger.kernel.org with ESMTP id S264732AbTFLEgU (ORCPT ); Thu, 12 Jun 2003 00:36:20 -0400 To: linux-kernel@vger.kernel.org Subject: Re: Pentium M (Centrino) cpufreq device driver (please test me) In-Reply-To: <20030611230037$61cf@gated-at.bofh.it> References: <20030611230037$61cf@gated-at.bofh.it> Reply-To: mattdm@mattdm.org Date: Thu, 12 Jun 2003 00:50:05 -0400 Message-Id: <20030612045005.3883C720B1@jadzia.bu.edu> From: mattdm@jadzia.bu.edu (Matthew Miller) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1630 Lines: 30 > The driver uses built-in tables for all the operating points of known > Pentium M processors, derived from the Table 5 in the Intel Pentium M > datasheet (25261202.pdf). The tables derived from the datasheet exactly > match the tables in ACPI on my 1.3GHz Pentium M IBM ThinkPad X31. > > Because this driver is using undocumented registers, it is careful to > only apply to CPUs which I'm confident that it will work with. > Therefore, not only does it look for the EST feature bit, but will only > work on Family 6, Model 9, Stepping 5 processors. It also needs an > exact match on model name when choosing which operating point table to > use. For what it's worth (maybe not much) I have a Vaio U101 which uses the "Celeron 600A" processor. This is a sort of bastard-child of the Pentium M family -- it's not listed on their web site anywhere that I know of -- certainly not in the pdf documents -- and it doesn't have any SpeedStep ability at all. (It's apparently locked 600Mhz and the lowest voltage. I have't tried your patch to see what happens -- I can if you want.) Anyway, I mention it because it *does* report itself as Family 6, Model 9, Stepping 5. Model name is "Mobile Intel(R) Celeron(R) processor 600MHz". -- Matthew Miller mattdm@mattdm.org Boston University Linux ------> - 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/