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The 66AK2G SoC supports two PRU-ICSS instances, named PRUSS0 and PRUSS1, each of which has two PRU processor cores. The two PRU-ICSS instances are identical to each other with few minor SoC integration differences, and are very similar to the PRU-ICSS1 of AM57xx/AM43xx. The Shared Data RAM size is larger and the number of interrupts coming into MPU INTC is like the instances on AM437x. There are also few other differences attributing to integration in Keystone architecture (like no SYSCFG register or PRCM handshake protocols). Other IP level differences include different constant table, differences in system event interrupt input sources etc. They also do not have a programmable module reset line like those present on AM33xx/AM43xx SoCs. The modules are reset just like any other IP with the SoC's global cold/warm resets. The existing PRUSS platform driver has been enhanced to support these 66AK2G PRU-ICSS instances through new 66AK2G specific compatible for properly probing and booting all the different PRU cores in each PRU-ICSS processor subsystem. A build dependency with ARCH_KEYSTONE is added to enable the driver to be built in K2G-only configuration. Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Grzegorz Jaszczyk <grzegorz.jaszczyk@linaro.org> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com> |
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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.