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There are 8 instances of gpio modules in main domain divided into 2 groups: - Group1: gpio0, gpio2, gpio4, gpio6 - Group2: gpio1, gpio3, gpio5, gpio7 Groups are created to provide protection between two different processor virtual worlds. There are x gpio lines coming out of each group. Each module in a group has equal x gpio lines pinned out. There is a top level mux for selecting the module instance for each pin coming out of group. Exactly one module can be selected to control the corresponding pin. This muxing can be controlled along the pad mux configuration registers. Group1 pins out 128 lines(8 banks). Group 2 pins out 36 lines(2 banks). Add DT nodes for each module instance in the main domain. Users should make sure that correct gpio instance is selected in their pad configuration. Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com> Reviewed-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Tero Kristo <t-kristo@ti.com>
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.