Re: [PATCH v4 06/20] dt-bindings: memory: tegra: Squash tegra20-gart into tegra20-mc

Rob Herring
2018-09-27T18:41:47Z

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 <digetx@gmail.com>
> ---
> .../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 <robh@kernel.org>