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When widebus was enabled for DisplayPort in commitc7c4122026("drm/msm/dp: enable widebus on all relevant chipsets") it was clarified that it is only supported on DPU 5.0.0 onwards which includes SC7180 on DPU revision 6.2. However, this patch missed that the description structure for SC7180 is also reused for SDM845 (because of identical io_start address) which is only DPU 4.0.0, leading to a wrongly enbled widebus feature and corruption on that platform. Create a separate msm_dp_desc_sdm845 structure for this SoC compatible, with the wide_bus_supported flag turned off. Fixes:c7c4122026("drm/msm/dp: enable widebus on all relevant chipsets") Signed-off-by: James A. MacInnes <james.a.macinnes@gmail.com> [DB: reworded commit text following Marijn's suggestion] Reviewed-by: Abhinav Kumar <quic_abhinavk@quicinc.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Patchwork: https://patchwork.freedesktop.org/patch/636944/ Link: https://lore.kernel.org/r/20250212-sdm845_dp-v2-1-4954e51458f4@gmail.com Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.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.