From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 0ABD9DDE0E for ; Wed, 24 Sep 2008 07:16:23 +1000 (EST) Subject: Re: mpc8541 pci1 ioport allocation address space problem From: Benjamin Herrenschmidt To: Wang Jian In-Reply-To: <48D8FC36.9080407@linux.net.cn> References: <48D4DB89.3040607@linux.net.cn> <1222062464.12085.25.camel@pasglop> <48D8FC36.9080407@linux.net.cn> Content-Type: text/plain Date: Wed, 24 Sep 2008 07:16:12 +1000 Message-Id: <1222204572.8277.13.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org Reply-To: benh@kernel.crashing.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, 2008-09-23 at 22:24 +0800, Wang Jian wrote: > > I had this patch and 2 fixes on dts applied simultaneously, and the > board > works. I thought this patch was necessary. > > I reverted this patch and tried again, the board still works. Thanks > for > your insight. > > Anyway, the io port read from /proc/ioports is misleading, so I wish > it > can be changed a little. > Ordering things differently in the DTS so that the lower address bus gets probed first might help. Cheers Ben.