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AngeloGioacchino Del Regno
713ee44144
On some SoCs, like MT8195 and MT8188, the DPI instance that is reserved to the HDMI Transmitter uses a different clock topology. In this case, the DPI is clocked by the HDMI IP, and this outputs its clock to the MM input of dpi_pixel_clk, which is essential to enable register access to the DPI IP. Add a `clocked_by_hdmi` member to struct mtk_dpi_conf, and check it to avoid enabling the DPI clocks in the mediatek-drm internal .start() callback (and avoid disabing in the .stop() component callback): this will make sure that the clock configuration sequence is respected during display pipeline setup by following the bridge ops between DPI and HDMI, where the HDMI driver is expected to enable the clocks in the bridge's pre_enable(), and DPI in the enable() cb. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: CK Hu <ck.hu@mediatek.com> Signed-off-by: Chun-Kuang Hu <chunkuang.hu@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.