From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758087Ab2IRLer (ORCPT ); Tue, 18 Sep 2012 07:34:47 -0400 Received: from 217-155-41-104.dsl.in-addr.zen.co.uk ([217.155.41.104]:60268 "EHLO centos1.newflow.co.uk" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1757441Ab2IRLeq (ORCPT ); Tue, 18 Sep 2012 07:34:46 -0400 Message-ID: <50585C41.1050704@mimc.co.uk> Date: Tue, 18 Sep 2012 12:34:25 +0100 From: Mark Jackson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120827 Thunderbird/15.0 MIME-Version: 1.0 To: "linux-omap@vger.kernel.org" CC: lkml Subject: Re: 0.5sec delay when ttyO0 is enabled References: <50584F90.2000606@mimc.co.uk> In-Reply-To: <50584F90.2000606@mimc.co.uk> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18/09/12 11:40, Mark Jackson wrote: > I'm using a BeagleBone, and the linux kernel from Koen Kooi (https://github.com/koenkooi/linux.git). > > I have noticed there is a 0.5sec delay between OMAP UART0 being initialised and the console being > enabled. It is, of course, when the printk() messages are processed and dumped to the console. If I boot with the "quiet" flag, the delay is magically gone. Apologies for the noise.