mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-06 10:58:48 +09:00
122ffa74f5
However, the hdmi 2.0 spec requires that some flags are set in the sink scdc regs, and those flags are very likely to be reset when the cable has been disconnected. This will thus result in a blank display, even if the display pipeline configuration hasn't been modified or is in the exact same state. The solution we've had so far is to enable the scrambling and high ratio related bits again on reconnection, but the hdmi 2.0 spec (Section 6.1.3.1 - Scrambling Control) requires that the scdc bit is set before sending any scrambled video signal. Using that solution thus breaks that expectation. So we need disable hdmi signal output when hdmi plug out. writing scdc scrambling and high ratio regs when hdmi plug in then enable hdmi signal output finally. Change-Id: I422455e1d5b60c3fd4a3ef35ccb46de9fb0f28f8 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.