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[ Upstream commit2c4e80e067] On Amlogic Meson G12b platform, similar to fclk_div3, the fclk_div2 seems to be necessary for the system to operate correctly as well. Typically, the clock also gets chosen by the eMMC peripheral. This probably masked the problem so far. However, when booting from a SD card the clock seems to get disabled which leads to a system freeze. Let's mark this clock as critical, fixing boot from SD card on G12b platforms. Fixes:085a4ea93d("clk: meson: g12a: add peripheral clock controller") Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Tested-by: Anand Moon <linux.amoon@gmail.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Link: https://lore.kernel.org/r/577e0129e8ee93972d92f13187ff4e4286182f67.1598629915.git.stefan@agner.ch Signed-off-by: Sasha Levin <sashal@kernel.org>
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.