Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764528AbZFOSu2 (ORCPT ); Mon, 15 Jun 2009 14:50:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753423AbZFOSuN (ORCPT ); Mon, 15 Jun 2009 14:50:13 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:53078 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751635AbZFOSuM (ORCPT ); Mon, 15 Jun 2009 14:50:12 -0400 Date: Mon, 15 Jun 2009 20:50:08 +0200 From: Pavel Machek To: Brian Swetland Cc: linux-arm-kernel@lists.arm.linux.org.uk, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2/3] [ARM] msm: make debugging UART (for DEBUG_LL) configurable Message-ID: <20090615185008.GC10490@elf.ucw.cz> References: <1245033557-10968-1-git-send-email-swetland@google.com> <1245033557-10968-2-git-send-email-swetland@google.com> <1245033557-10968-3-git-send-email-swetland@google.com> <20090615132018.GA14555@elf.ucw.cz> <20090615183433.GB10490@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1466 Lines: 31 On Mon 2009-06-15 11:43:23, Brian Swetland wrote: > On Mon, Jun 15, 2009 at 11:34 AM, Pavel Machek wrote: > >> > ...and those that do, have it at fixed uart, no? > >> > >> Well, I'd like to support the SoC generally, not just Dream -- it's > >> used in a bunch of different devices, and there's nothing that forces > >> you to use UART3 everywhere (I certainly have seen some 7k hardware > >> that uses UART1 as the debug serial port). > > > > Aha, ok, I guess that should go to the changelog. (Nice bonus would be > > if it was automatically/correctly set up when user selects machine > > type... Actually, how does that work if you support few boards with > > same kernel...?) > > At this point a kernel for multiple boards with different DEBUG_LL > uarts doesn't work correctly -- I'm not sure this could be done > without making the debug macro code, etc, a lot messier (since it has > to write to the physical uart address in early boot and I believe that > happens before the machine type is determined, though maybe I'm > wrong). Ok, makes sense. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/