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The K3 AM65x family of SoCs have the next generation of the PRU-ICSS processor subsystem capable of supporting Gigabit Ethernet, and is commonly referred to as ICSSG. These SoCs contain typically three ICSSG instances named ICSSG0, ICSSG1 and ICSSG2. The three ICSSGs are identical to each other for the most part with minor SoC integration differences and capabilities. The ICSSG2 supports slightly enhanced features like SGMII mode Ethernet, while the ICSS0 and ICSSG1 instances are limited to MII mode only. The ICSSGs on K3 AM65x SoCs are in general super-sets of the PRUSS on the AM57xx/66AK2G SoCs. They include two additional auxiliary PRU cores called RTUs and few other additional sub-modules. The interrupt integration is also different on the K3 AM65x SoCs and are propagated through various SoC-level Interrupt Router and Interrupt Aggregator blocks. Other IP level differences include different constant tables, 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 updated to support these new ICSSG instances through new AM65x specific compatibles. A build dependency with ARCH_K3 is added to enable building all the existing PRUSS platform drivers for this ARMv8 platform. 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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| kernel | ||
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README
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.