patch subject above:Hi Heiko
dt-bindings: add documentation for Rockchip rk3399 display controllers
not everybody skimming over patches directly knows what a vop is;-)
I still believe even such a trivial patch should also get some form of
description, something like:
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Document compatible values for rk3399 display controllers.
Big and little display controllers are not identical and have differing
feature sets on the rk3399.
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