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There are timer IO pads in the MCU domain, and in the MAIN domain. These pads can be muxed for the related timers. There are timer IO control registers for input and output. The registers for CTRLMMR_TIMER*_CTRL and CTRLMMR_MCU_TIMER*_CTRL are used to control the input. The registers for CTCTRLMMR_TIMERIO*_CTRL and CTRLMMR_MCU_TIMERIO*_CTRL the output. The multiplexing is documented in Technical Reference Manual[1] under "Timer IO Muxing Control Registers" and "Timer IO Muxing Control Registers", and the "Timers Overview" chapters. We do not expose the cascade_en bit due to the racy usage of independent 32 bit registers in-line with the timer instantiation in the device tree. The MCU timer controls are also marked as reserved for usage by the MCU firmware. [1] http://www.ti.com/lit/pdf/spruil1 Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Tony Lindgren <tony@atomide.com> Link: https://lore.kernel.org/r/20230531213215.602395-3-nm@ti.com Signed-off-by: Vignesh Raghavendra <vigneshr@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.