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f15be3d4a0
Rockchip 356x SoC's GIC has two hardware integration issues that affect MSI functionality of the GIC. Previously, both these GIC issues were worked around by using MBI for MSI instead of ITS because kernel GIC driver didn't have necessary quirks. First issue is about RK356x GIC not supporting programmable shareability, while reporting it as supported in a GIC's feature register. Rockchip assigned Erratum ID #3568001 for this issue. This patch adds dma-noncoherent property to the GIC node, denoting that a SW workaround is required for mitigating the issue. Second issue is about GIC AXI master interface addressing limited to the first 4GB of physical address space. Rockchip assigned Erratum ID #3568002 for this issue. Now that kernel supports quirks for both of the erratums, add MSI controller node to RK356x device-tree. Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250216221634.364158-3-dmitry.osipenko@collabora.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 reStructuredText 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.