From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chirag Jog Subject: Re: How to enable HPET on an 2.6.23.9-rt12 with Intel ICH2 Date: Tue, 22 Jan 2008 18:20:03 +0530 Message-ID: <20080122125003.GA9929@linux.vnet.ibm.com> References: <7B9B6F61B189D94CA8CEE58A449BF3A97124FB@de01ex02.GLOBAL.JHCN.NET> <20080122115436.GC8660@linux.vnet.ibm.com> <7B9B6F61B189D94CA8CEE58A449BF3A9712600@de01ex02.GLOBAL.JHCN.NET> Reply-To: Chirag Jog Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: linux-rt-users@vger.kernel.org To: Lampersperger Andreas Return-path: Received: from E23SMTP03.au.ibm.com ([202.81.18.172]:39220 "EHLO e23smtp03.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751370AbYAVMuG (ORCPT ); Tue, 22 Jan 2008 07:50:06 -0500 Received: from d23relay03.au.ibm.com (d23relay03.au.ibm.com [202.81.18.234]) by e23smtp03.au.ibm.com (8.13.1/8.13.1) with ESMTP id m0MCnYYU027920 for ; Tue, 22 Jan 2008 23:49:34 +1100 Received: from d23av03.au.ibm.com (d23av03.au.ibm.com [9.190.234.97]) by d23relay03.au.ibm.com (8.13.8/8.13.8/NCO v8.7) with ESMTP id m0MCo411639184 for ; Tue, 22 Jan 2008 23:50:04 +1100 Received: from d23av03.au.ibm.com (loopback [127.0.0.1]) by d23av03.au.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id m0MCo5vQ020321 for ; Tue, 22 Jan 2008 23:50:05 +1100 Content-Disposition: inline In-Reply-To: <7B9B6F61B189D94CA8CEE58A449BF3A9712600@de01ex02.GLOBAL.JHCN.NET> Sender: linux-rt-users-owner@vger.kernel.org List-ID: * Lampersperger Andreas [2008-01-= 22 13:14:40]: > No, there is no BIOS option which indicates HPET support. But the > BIOS on my system is IMHO very very bad. It knows nothing about the > features on the board. Is ist crucial to have here BIOS support? Or > can these features be enabled by e.g. boot parameters? Hi, afaik, there needs to be h/w support enabled [via bios] as hpet is a ha= rdware feature. Without h/w enablement, the kernel can't do much. > -----Urspr=FCngliche Nachricht----- > Von: Chirag Jog [mailto:chirag@linux.vnet.ibm.com]=20 > Gesendet: Dienstag, 22. Januar 2008 12:55 > An: Lampersperger Andreas > Cc: linux-rt-users@vger.kernel.org > Betreff: Re: How to enable HPET on an 2.6.23.9-rt12 with Intel ICH2 >=20 > * Lampersperger Andreas [2008-0= 1-22 12:09:42]: >=20 > > Hello, > >=20 > > does anyone have a hint how to enable High resolution timers on my=20 > > system (with a Intel ICH2 (which has afaik 8254 Timers). Is this=20 > > hardware not enough for hr-timers? > Check your BIOS settings. > If your h/w supports HPET, there should be an option in the BIOS to t= urn it on. >=20 > > -- > Cheers, > Chirag Jog >=20 >=20 > ---------------------------------------------------------------------= ---------------------------------- > Registergericht: Traunstein / Code of Register HRB 275 Sitz / Head Of= fice: Traunreut > Aufsichtsratsvorsitzender / Chairman of Supervisory Board: Rainer Bur= khard > Geschaeftsfuehrung / Managing Director: Thomas Sesselmann >=20 --=20 Cheers, Chirag Jog