From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752284AbaC1QIS (ORCPT ); Fri, 28 Mar 2014 12:08:18 -0400 Received: from mail-pa0-f42.google.com ([209.85.220.42]:33835 "EHLO mail-pa0-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752111AbaC1QIP (ORCPT ); Fri, 28 Mar 2014 12:08:15 -0400 From: Grant Likely To: devicetree@vger.kernel.org, christoffer.dall@linaro.org, linux-kernel@vger.kernel.org, olof@lixom.net, benh@kernel.crashing.org, rob.herring@linaro.org Subject: [RFC 0/5] of: Automatic console registration cleanups Date: Fri, 28 Mar 2014 09:08:00 -0700 Message-Id: <1396022885-6102-1-git-send-email-grant.likely@linaro.org> X-Mailer: git-send-email 1.8.3.2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, This is a series that I've been playing with over the last few days to clean up the selection of default console devices when using the device tree. The device tree defines a way of specifying the console by using a "stdout-path" property in the /chosen node, but very few drivers actually attempt to use that data, and so for most platforms there needs to be a "console=" line in the command line if a serial port is intended to be used as the console. With this series, if there is a /chosen/stdout-path property, and if that property points to a serial port node, then when the serial driver registers the port, the core uart_add_one_port() function will notice and if no console= argument was provided then add it as a preferred console. I've not tested this very extensively yet, but I want to get some feedback before I go further. The one downside with this approach is that it doesn't do anything for early console setup. That still needs to be added on a per-driver basis, but at least it shouldn't conflict with this approach.