mirror of
https://github.com/hardkernel/linux.git
synced 2026-06-07 19:30:30 +09:00
88576e2388
Look like an explicit fixing up of mode_flags is required for DSIM IP present in i.MX8M Mini/Nano SoCs. At least the LCDIF + DSIM needs active low sync polarities in order to correlate the correct sync flags of the surrounding components in the chain to make sure the whole pipeline can work properly. On the other hand the i.MX 8M Mini Applications Processor Reference Manual, Rev. 3, 11/2020 says. "13.6.3.5.2 RGB interface Vsync, Hsync, and VDEN are active high signals." i.MX 8M Mini Applications Processor Reference Manual Rev. 3, 11/2020 3.6.3.5.2 RGB interface i.MX 8M Nano Applications Processor Reference Manual Rev. 2, 07/2022 13.6.2.7.2 RGB interface both claim "Vsync, Hsync, and VDEN are active high signals.", the LCDIF must generate inverted HS/VS/DE signals, i.e. active LOW. No clear evidence about whether it can be documentation issues or something, so added proper comments on the code. Comments are suggested by Marek Vasut. Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Marek Vasut <marex@denx.de> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Signed-off-by: Inki Dae <inki.dae@samsung.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.