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The AM64 MAIN domain contains a Mailbox IP instance with multiple clusters, and is a variant of the IP on current AM65x and J721E SoCs. The AM64x SoC has only 8 clusters with no interrupts routed to the A53 core on the first 2 clusters. The interrupt outputs from the IP do not go through any Interrupt Routers and are hard-wired to each processor, with only couple of interrupts from each cluster reaching the A53 core. Add all the Mailbox clusters that generate interrupts towards the A53 core as their own nodes under the cbass_main node instead of creating an almost empty parent node for the Mailbox IP and the clusters as its child nodes. All these nodes are enabled by default in the base dtsi file, but any cluster that does not define any child sub-mailbox nodes should be disabled in the corresponding board dts files. Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Gowtham Tammana <g-tammana@ti.com> Link: https://lore.kernel.org/r/20210322185430.957-3-s-anna@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.