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The DE33 is a newer version of the Allwinner Display Engine IP block, found in the H616, H618, H700 and T507 SoCs. DE2 and DE3 are already supported by the mainline driver. Notable features (from the H616 datasheet and implemented): - 4096 x 2048 (4K) output support Other features (implemented but not in this patchset): - AFBC ARM Frame Buffer Compression support - YUV pipeline support The DE2 and DE3 engines have a blender register range within the mixer engine register map, whereas the DE33 separates this out into a separate display group, and adds a top register map. The DE33 also appears to remove the global double buffer control register, present in the DE2 and DE3. Extend the mixer to support the DE33. Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Ryan Walklin <ryan@testtoast.com> Signed-off-by: Chris Morgan <macromorgan@hotmail.com> Acked-by: Maxime Ripard <mripard@kernel.org> Reviewed-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20250528092431.28825-7-ryan@testtoast.com Signed-off-by: Maxime Ripard <mripard@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.