Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262144AbUKDJSm (ORCPT ); Thu, 4 Nov 2004 04:18:42 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262143AbUKDJSl (ORCPT ); Thu, 4 Nov 2004 04:18:41 -0500 Received: from zone3.gcu-squad.org ([217.19.50.74]:24075 "EHLO zone3.gcu-squad.org") by vger.kernel.org with ESMTP id S262139AbUKDJSX convert rfc822-to-8bit (ORCPT ); Thu, 4 Nov 2004 04:18:23 -0500 Date: Thu, 4 Nov 2004 10:12:20 +0100 (CET) To: degger@fhm.edu Subject: Re: dmi_scan on x86_64 X-IlohaMail-Blah: khali@gcu.info X-IlohaMail-Method: mail() [mem] X-IlohaMail-Dummy: moo X-Mailer: IlohaMail/0.8.13 (On: webmail.gcu.info) Message-ID: In-Reply-To: From: "Jean Delvare" Bounce-To: "Jean Delvare" CC: "Andi Kleen" , "LKML" MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1733 Lines: 38 Hi Daniel, > Is this stuff any relevant to a Tyan Tiger K8W (S2875), i.e. is Tyan > employing the multiplexing trick on several boards or just the one you > tried to identify? The SMBus multiplexing is rarely used and highly board dependent. I have no reason to believe that the Tyan Tiger K8W (S2875) has its SMBus multiplexed (and if it were, it would require different, although similar, code than I wrote for the S4882 anyway). For reference, the only boards I know for sure use a form of multiplexing for their hardware monitoring capabilities are the Iwill MPX2 and the Gigabyte GA7 DPXDW+. Both use LM90 chips. One of them (can't remember which) does true SMBus multiplexing over two of these, while the other has a single chip which can be routed to either of two thermal diodes. The sensors drivers don't support these setups yet. I think I also remember of a board where fan inputs were somehow multiplexed (the board had six fan headers, all of them reported speeds in the BIOS setup screen, but the hardware monitoring chip would only have three tachometers inputs.) I can't seem to remember the brand and model, and we did not investigate the problem deep enough to propose a solution back then anyway. As a matter of fact, my proposal to support the S4882 SMBus multiplexing is the first attempt to support this kind of setup. Note that other proposals were already made but they were aimed at supporting home-made setups, not publicly available motherboards. -- Jean - 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/