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Date: Wed, 12 Dec 2018 11:02:14 +0100
From: Thierry Reding <thierry.reding@...il.com>
To: Dmitry Osipenko <digetx@...il.com>
Cc: Jonathan Hunter <jonathanh@...dia.com>,
Joerg Roedel <joro@...tes.org>,
Robin Murphy <robin.murphy@....com>,
iommu@...ts.linux-foundation.org, devicetree@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 06/21] dt-bindings: memory: tegra: Squash tegra20-gart
into tegra20-mc
On Sun, Dec 09, 2018 at 11:29:35PM +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 <digetx@...il.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
> .../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
Acked-by: Thierry Reding <treding@...dia.com>
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