891d940aef
The Kobo Aura is an e-book reader released in 2013. With the devicetree in its current state, the kernel will boot and run for about ten seconds. To solve this, the embedded controller needs to be told that the system should stay powered on. This will be done in a later patchset. - The IOMUXC mode bits for the SD interfaces were taken from the vendor's U-Boot fork. - The bus width of the eMMC is 4 bits in the vendor kernel, but I achieved better performance with 8 bits. - The SDIO clock frequency for the WiFi chip is 25MHz in the vendor kernel, but the WiFi chip (BCM43362) supports 50MHz, which works reliably on this board and gives slightly better performance. - The I2C pins' IOMUXC settings come from the vendor's U-Boot fork. Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net> Signed-off-by: Shawn Guo <shawnguo@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.