334eb3ba15
The driver supports UHS-I bus speed modes: SDR25, DDR50, and SDR104. By default, the controller operates in SDR25 mode. Higher-speed modes can be enabled via the Device Tree by adding the following properties to the SDIO node: - sd-uhs-ddr50 - sd-uhs-sdr104 When these properties are present, the driver negotiates the highest supported UHS mode with the card and host. Signed-off-by: Swee Aun Khor <sakhor@efinixinc.com>
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.