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a323430753
Sometimes interrupts are routed from an interrupt controller to another in no specific order. Having these in the drives makes it difficult to maintain when the same drivers supports multiple variants with different mapping. Also, specifying them in DT makes little sense with a bunch of numbers like - <0, 13>, <5, 32>, It makes more sense when we can have the parent handle along with interrupt specifiers for the incoming interrupt as well as that of the outgoing interrupt like - <22 0 &intc 36 0>, <24 0 &intc 37 0>, <26 0 &intc 38 0>, And the interrupt specifiers can be interpreted using these properties - irqdomain-map-mask = <0xff 0>; irqdomain-map-pass-thru = <0 0xff>; Let's add a helper function to parse this from DT. Bug: 150637369 Change-Id: Idb3d698ff1d5353d8efc316e21700a1be4ffc542 Patch-mainline: https://lore.kernel.org/patchwork/patch/1026606 Signed-off-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Lina Iyer <ilina@codeaurora.org> Signed-off-by: Will McVicker <willmcvicker@google.com> (cherry picked from commit 0303182e48222df84b24725a4ef16fbd5cecd09d)
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.