a1b6c81ba4
PHY_TYPE_USB is undefined and was added as PHY_TYPE_USB2 and PHY_TYPE_USB3 in 2fbbc96d1600 (phy: Add PHY header file for DT x Driver defines, 2014-11-04). Fix documentation to avoid misleading users. Signed-off-by: Liam Beguin <lvb@xiphos.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Link: https://lore.kernel.org/r/20211117003841.2030813-1-lvb@xiphos.com Signed-off-by: Vinod Koul <vkoul@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.