From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Fainelli Subject: Overriding/concatenating kernel command-line with bootargs from dtb? Date: Fri, 08 Jun 2012 09:55:11 +0200 Message-ID: <2050174.dvvKJHKP0J@flexo> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: linux-arm , device-tree List-Id: devicetree@vger.kernel.org Hi all, I have a specific use case, where two boards using the same SoC have different UART speeds, which is something that I have specified in their corresponding dts files. In order to make sure people don't mess up the configuration, I prefer not to rely on the bootloader-supplied kernel-command line. I was kind of expecting that ARM_ATAG_DTB_COMPAT + CMDLINE_EXTEND would actually concatenate the kernel command-line with the bootargs provided from dtb. Is this something someone else would need? If so, shall we just make that happen when the two config symbols mentionned above are enabled, or shall we introduce a 4th kernel command line handling strategy? Thank you for your answers. -- Florian