From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suravee Suthikulanit Subject: Re: [PATCH 00/13] dtb: amd: Miscelleneous Updates for AMD Seattle DTS Date: Thu, 28 Jan 2016 16:20:38 -0600 Message-ID: <56AA9436.60800@amd.com> References: <1453929121-12171-1-git-send-email-Suravee.Suthikulpanit@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Olof Johansson Cc: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Arnd Bergmann , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "arm@kernel.org" , brijeshkumar.singh@amd.com, Thomas Lendacky , leo.duran@amd.com List-Id: devicetree@vger.kernel.org Hi Olof, On 1/28/2016 3:39 PM, Olof Johansson wrote: > Hi Suravee, > > On Wed, Jan 27, 2016 at 1:11 PM, Suravee Suthikulpanit > wrote: >> From: Suravee Suthikulpanit >> >> This patch series contains several updates for the AMD Seattle SOC DTS files. >> It also adds new board files for newer Overdrive and Linaro 96boards (Husky) >> platforms. > > My Overdrive comes with DT provided by firmware, so there's no need to > have a in-kernel-tree DT source. You are correct that the FW comes with DT, and in typical case, you wouldn't need this. > Are you aware of other reasons to have it here? I just foresee > divergence and conflicts between the two. It was quite obvious before > this update when the FW-provided DT was a lot more complete than what > we had in the kernel tree. However, there are still new/updated drivers being developed, and sometimes requires new/changes in DT binding. So, the DT that comes with the FW can get out of date, and will lack the support for new drivers. Certain version of the FW allows overriding the DT that comes with the FW. So, we are providing the in-kernel DT to allow developers to provide the updated device tree for newer kernels. This patch series is bringing the in-kernel DT closer to what the latest FW is providing to avoid potential conflicts. Regards, Suravee > > -Olof >