de12c53843
Document the Qualcomm WCD9390/WCD9395 USB SubSystem Altmode/Analog Audio Switch which is a separate USB SubSystem for Altmode/Analog Audio Switch accessible over an I2C interface. Since Audio Headphone and Microphone data path between the Codec and the USB-C Mux subsystems are external to the IC, it requires a second port to handle USB-C altmode & orientation switching for Audio Accessory Mode to the Codec SubSystem. Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20231212-topic-sm8650-upstream-wcd939x-usbss-v2-1-38961fea5867@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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.