From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263363AbVGOUkz (ORCPT ); Fri, 15 Jul 2005 16:40:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262096AbVGOUkf (ORCPT ); Fri, 15 Jul 2005 16:40:35 -0400 Received: from atlrel6.hp.com ([156.153.255.205]:34215 "EHLO atlrel6.hp.com") by vger.kernel.org with ESMTP id S262023AbVGOUjB (ORCPT ); Fri, 15 Jul 2005 16:39:01 -0400 Subject: Re: serial: 8250 fails to detect Exar XR16L2551 correctly From: Alex Williamson To: Russell King Cc: David Vrabel , Linux Kernel In-Reply-To: <20050714144604.A7314@flint.arm.linux.org.uk> References: <42CA96FC.9000708@arcom.com> <20050706195740.A28758@flint.arm.linux.org.uk> <42CD2C16.1070308@arcom.com> <1121108408.28557.71.camel@tdi> <20050711204646.D1540@flint.arm.linux.org.uk> <1121112057.28557.91.camel@tdi> <20050711211706.E1540@flint.arm.linux.org.uk> <1121116677.28557.104.camel@tdi> <1121274296.4334.58.camel@tdi> <20050714144604.A7314@flint.arm.linux.org.uk> Content-Type: text/plain Organization: LOSL Date: Fri, 15 Jul 2005 14:39:21 -0600 Message-Id: <1121459961.12944.52.camel@tdi> Mime-Version: 1.0 X-Mailer: Evolution 2.2.2 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 2005-07-14 at 14:46 +0100, Russell King wrote: > Then we try to register the console, which may result in this UART > becoming a console. So now we have a console which is in low power > mode. Bad bad bad. No cookie for the serial layer today. I don't know if this is a possible short term option, but the code David proposes would work fine on the A2 rev ST16C255x parts as long as UART_CAP_SLEEP in not included in the list of capabilities. The check for the A2 part would not be needed (esp. since it doesn't work). When the console detection code is fixed up, this flag could be included, and I'd be happy to test it. This would at least give us both usable UARTs until we can work out the other kinks. Thanks, Alex -- Alex Williamson HP Linux & Open Source Lab