From mboxrd@z Thu Jan 1 00:00:00 1970 From: Benjamin Herrenschmidt Subject: Re: radeonfb monid i2c bus Date: Fri, 06 Jun 2008 23:50:18 +1000 Message-ID: <1212760218.12464.33.camel@pasglop> References: <20080606120151.7976df45@hyperion.delvare> Reply-To: benh@kernel.crashing.org Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.91] helo=mail.sourceforge.net) by sc8-sf-list1-new.sourceforge.net with esmtp (Exim 4.43) id 1K4cKs-0005R6-9F for linux-fbdev-devel@lists.sourceforge.net; Fri, 06 Jun 2008 06:50:30 -0700 Received: from gate.crashing.org ([63.228.1.57] ident=[U2FsdGVkX18ryXxRaqoVAajNfTSdKk+AGcq2EkcL/EQ=]) by mail.sourceforge.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.44) id 1K4cKq-0007j2-Rp for linux-fbdev-devel@lists.sourceforge.net; Fri, 06 Jun 2008 06:50:30 -0700 In-Reply-To: <20080606120151.7976df45@hyperion.delvare> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-fbdev-devel-bounces@lists.sourceforge.net Errors-To: linux-fbdev-devel-bounces@lists.sourceforge.net To: Jean Delvare Cc: linux-fbdev-devel@lists.sourceforge.net On Fri, 2008-06-06 at 12:01 +0200, Jean Delvare wrote: > Hi Ben, > > Can you explain what is the "monid" i2c bus on Radeon adapters? I have > two Radeon chips here, an M6 in my old laptop and a 9200 in my desktop > system. On the M6 there is nothing on the monid bus. On the 9200, the > monid bus doesn't even work, every access results in timeout. The > radeonfb driver doesn't even look for EDID EEPROMs on that bus (except > in debug code.) > > So I'm curious why you create this i2c bus if you don't need it. > Have you ever seen a Radeon adapter where there is something on that > bus? The BIOS connector tables might make us use it. Otherwise, it tends to have the external TMDS transmitter on it for which we'll one day get proper support for re-initializing on wakeup from sleep... Ben. ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://sourceforge.net/services/buy/index.php