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The timing of YUV420 at the same resolution is different from other color formats. Therefore, if timing switch of vop is later than the switching process of hdmi, hdmi timing will be abnormal. In hdmi frl mode, input ipi clk is different from output link clk frequency, which makes it difficult to restore after the timing error. Therefore, it is necessary to ensure that the output mode of vop is switched before hdmi switch to ensure the correct timing Change-Id: I4633670f13a28975eb37a68ad597956d87a159c3 Signed-off-by: Algea Cao <algea.cao@rock-chips.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 Restructured Text 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.