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916fa558cb
Users report being able to boot (u-boot) from SD card but kernel init then fails to mount partitions on the card containing boot media resulting in first-boot failure. System logs show only the probe of the mmc devices: the SD card is seen, but no partitions are found so init fails to mount them and boot stalls. Reducing the speed of the SD card from 50MHz to 35MHz results in complete probing of the card and successful boot. Signed-off-by: Christian Hewitt <christianshewitt@gmail.com> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Link: https://lore.kernel.org/r/20250505143700.4029484-1-christianshewitt@gmail.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.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 reStructuredText 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.