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fa16d7a820
The ROCK Pi 4A/B/C boards come with a 32 Mbit SPI NOR flash chip (XTX Technology Limited XT25F32) with a maximum clock frequency of 108 MHz. Use this value for the device node's spi-max-frequency property. This patch has been tested on ROCK Pi 4A. Signed-off-by: Stefan Nagy <stefan.nagy@ixypsilon.net> Reviewed-by: Dragan Simic <dsimic@manjaro.org> Link: https://lore.kernel.org/r/20231217113208.64056-1-stefan.nagy@ixypsilon.net Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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.