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30a4687394
Current code always sets reset line low in .pre_enable callback and holds it low for 10ms. This is sub-optimal and increases the time between enablement of the DSI83 and valid LVDS clock. Rework the reset handling such that the reset line is held low for 10ms both in probe() of the driver and .disable callback, which guarantees that the reset line was always held low for more than 10ms and therefore the reset line timing requirement is satisfied. Furthermore, move the reset handling into .enable callback so the entire DSI83 initialization is now in one place. This reduces DSI83 enablement delay by up to 10ms. Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Robert Foss <robert.foss@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Link: https://patchwork.freedesktop.org/patch/msgid/20211016210402.171595-1-marex@denx.de |
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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.