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The realtek ALC5645 data sheet is unclear about the state of the IN1 port control mixer register, MX-0A, in that enabling bit 2 (En_bst1, also called "IN1 Port Enable Control") actually *prevents* the headset microphones from functioning. Change-Id: I560ac2e98301131dab4f70cf1a996553e61cefc0
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.