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cd5901c83f
// example:
&rk628 {
// case 1:
mode-hsync-pol = <1>;
mode-vsync-pol = <1>;
// case 2:
mode-sync-pol = <1>;
// case 3:
display-timings {
src-timing {
...
hsync-active = <1>;
vsync-active = <1>;
...
}
dst-timing {
...
}
}
}
Priority: case 3 > case 2 > case 1
-- case 1: the hsync and vsync polarities are configured by parsing
the values of the "mode-hsync-pol" and "mode-vsync-pol" properties
(if no property is configured, the corresponding polarity defaults to
positive polarity.
-- case 2: hsync and vsync polarity equal to "mode-sync-pol"
-- case 3: the "hsync-active" and "vsync-active" properties values in
the "display-timings"-"src-timings" node are prioritized to configure
the hsync and vsync polarity.
Signed-off-by: Zhibin Huang <zhibin.huang@rock-chips.com>
Change-Id: I595651f0761ed77e5582e297977359ab7ddc1743
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.