From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758573AbXHGIha (ORCPT ); Tue, 7 Aug 2007 04:37:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756311AbXHGIhU (ORCPT ); Tue, 7 Aug 2007 04:37:20 -0400 Received: from smtp35.poczta.interia.pl ([80.48.65.35]:15992 "EHLO smtp4.poczta.interia.pl" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756242AbXHGIhR (ORCPT ); Tue, 7 Aug 2007 04:37:17 -0400 Message-ID: <46B82F2B.7010704@interia.pl> Date: Tue, 07 Aug 2007 10:36:59 +0200 From: =?UTF-8?B?UmFmYcWCIEJpbHNraQ==?= User-Agent: Thunderbird 2.0.0.6 (X11/20070802) MIME-Version: 1.0 To: "Udo A. Steinberg" Cc: Andreas Mohr , David Edwards , power@bughost.org, Thomas Gleixner , linux-kernel@vger.kernel.org Subject: Re: HPET force-enable investigations on Via VT8235 References: <20070806204249.GA25957@rhlx01.hs-esslingen.de> <46B79512.6090704@interia.pl> <20070806235752.1e6c5653@laptop.hypervisor.org> In-Reply-To: <20070806235752.1e6c5653@laptop.hypervisor.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-EMID: dd00cacc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > RB> VT8235 does *NOT* have a HPET(*). Only part which has HPET is VT8237. It > RB> is device 00:17.0 too, but only 1106:3227 has HPET enable and memory > RB> base registers. VT8235 one and only feature which doesn't have driver > RB> yet seems to be hardware watchdog. > RB> (*) Datasheet revision 2.03 March 16, 2005 > > We have an Asrock K7VT4A+ board with VT8235 southbridge in our lab and it > does have an HPET. Just because the datasheet does not document HPET does > not mean it is not implemented. > > My guess is that newer revisions of VT8235 have HPET whereas older revisions > do not. I'll get an lspci dump from our box tomorrow. Indeed datasheet lies. I have VIA EPIA M10000 Rev. B motherboard. % uname -r 2.6.23-rc1-hrt1 % dmesg | grep -i hpet Force enabled HPET at base address 0xfed00000 hpet clockevent registered hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0 hpet0: 3 32-bit timers, 14318180 Hz Time: hpet clocksource has been installed. % cat /proc/timer_list [...] Tick Device: mode: 1 Clock Event Device: hpet max_delta_ns: 2147483647 min_delta_ns: 3352 mult: 61496110 shift: 32 mode: 3 next_event: 672664000000 nsecs set_next_event: hpet_legacy_next_event set_mode: hpet_legacy_set_mode event_handler: hrtimer_interrupt 00:11.0 ISA bridge: VIA Technologies, Inc. VT8235 ISA Bridge Subsystem: VIA Technologies, Inc. Unknown device aa01 Flags: bus master, stepping, medium devsel, latency 0 Capabilities: [c0] Power Management version 2 00: 06 11 77 31 87 00 10 02 00 00 01 06 00 00 80 00 10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 06 11 01 aa 30: 00 00 00 00 c0 00 00 00 00 00 00 00 00 00 00 00 40: 45 00 f0 00 00 00 00 00 0c 20 00 00 44 00 0a 08 50: 81 1d 09 00 00 b0 a5 30 03 00 00 00 00 00 00 00 60: 00 00 00 00 00 00 00 04 80 00 d0 fe 00 00 00 00 70: 06 11 01 aa 00 00 00 00 00 00 00 00 20 00 00 00 80: 20 84 59 00 b2 30 00 00 01 04 00 00 00 18 00 00 90: 00 1f 50 88 b0 c0 00 00 00 97 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 01 00 02 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 01 05 01 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 14 88 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 16 00 00 00 00 00 01 00 00 00 > Cheers, > > - Udo Regards Rafał ---------------------------------------------------------------------- Plaza plazy nierowna Kliknij >>>http://link.interia.pl/f1af7