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The DP calibration data is stored in nvmem cells, and the data layout is described in the `mtk_dp_efuse_fmt` arrays for each platform. There is no guarantee that the data is always a 4-length u32 cell array. For example, MT8188 has a data length of 3, preventing it from passing the preliminary check and undergoing calibration. Update the logic to support flexible data lengths. Specifically, we validate the length returned from `nvmem_cell_read()` against the platform-specific efuse format. If out-of-bound access is detected, fall back to the default calibration values. This likely indicates an error in either the efuse data length described in DT or the efuse format within the driver. Signed-off-by: Fei Shao <fshao@chromium.org> Reviewed-by: CK Hu <ck.hu@mediatek.com> Link: https://patchwork.kernel.org/project/dri-devel/patch/20241204142626.158395-1-fshao@chromium.org/ Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org> |
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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.