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Until now, the first UART port baudrate was set by the bootloader. Add a function allowing to change the baudrate. Changes may be done from userspace but also at probe time by the kernel. Use the simplest method: baudrate divisor. Works for all UART ports until 230400 baud. To achieve higher baudrates, software should implement the fractional divisor feature that allows more accuracy for higher rates. Signed-off-by: Allen Yan <yanwei@marvell.com> [<miquel.raynal@free-electrons.com>: changed termios handling] Signed-off-by: Miquel Raynal <miquel.raynal@free-electrons.com> Reviewed-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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.