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dd7db8d911
This commit fixes the potential misalignment between the value of device tree property "dma-coherent" and default value of COHERENCY_ENABLE register. Panthor driver didn't explicitly program the COHERENCY_ENABLE register with the desired coherency mode. The default value of COHERENCY_ENABLE register is implementation defined, so it may not be always aligned with the "dma-coherent" property value. The commit also checks the COHERENCY_FEATURES register to confirm that the coherency protocol is actually supported or not. v2: - Added R-b tags Signed-off-by: Akash Goel <akash.goel@arm.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> Reviewed-by: Liviu Dudau <liviu.dudau@arm.com> Reviewed-by: Steven Price <steven.price@arm.com> Link: https://lore.kernel.org/r/20241030225407.4077513-3-akash.goel@arm.com Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
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.