From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH v4 06/20] dt-bindings: memory: tegra: Squash tegra20-gart into tegra20-mc Date: Thu, 27 Sep 2018 13:41:43 -0500 Message-ID: <20180927184143.GA24866@bogus> References: <20180924004153.8232-1-digetx@gmail.com> <20180924004153.8232-7-digetx@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20180924004153.8232-7-digetx@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: Dmitry Osipenko Cc: Thierry Reding , Jonathan Hunter , Joerg Roedel , Robin Murphy , iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org On Mon, 24 Sep 2018 03:41:39 +0300, Dmitry Osipenko wrote: > Splitting GART and Memory Controller wasn't a good decision that was made > back in the day. Given that the GART driver wasn't ever been used by > anything in the kernel, we decided that it will be better to correct the > mistakes of the past and merge two bindings into a single one. As a result > there is a DT ABI change for the Memory Controller that allows not to > break newer kernels using older DT and not to break older kernels using > newer DT, that is done by changing the 'compatible' of the node to > 'tegra20-mc-gart' and adding a new-required clock property. The new clock > property also puts the tegra20-mc binding in line with the bindings of the > later Tegra generations. > > Signed-off-by: Dmitry Osipenko > --- > .../bindings/iommu/nvidia,tegra20-gart.txt | 14 ---------- > .../memory-controllers/nvidia,tegra20-mc.txt | 27 +++++++++++++------ > 2 files changed, 19 insertions(+), 22 deletions(-) > delete mode 100644 Documentation/devicetree/bindings/iommu/nvidia,tegra20-gart.txt > Reviewed-by: Rob Herring