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9b27303003
this is used to be compatible with old SoCs, such as mt8195, which shares t-phy between usb3 and pcie controller, usually, it's default mode is pcie rc mode, and could use force mode to switch into usb3 mode, because pericfg layer doesn't provide mode switch, also no efuse or jumper can be used; Currently, only support switch from default pcie mode to usb3; Note: don't use this way on new SoCs, use pericfg layer's mode switch instead (by perperty "mediatek,syscon-type"). Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/20231211025624.28991-2-chunfeng.yun@mediatek.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.