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Thierry Reding 2838cfddbc arm64: tegra: Bump #address-cells and #size-cells
The #address-cells and #size-cells properties for the top-level bus were
set to 1 because that was enough to represent the register ranges of all
the IP blocks on that bus. However, most of these devices can do DMA to
a larger address space, so translation of DMA addresses needs to happen
in a 64-bit address space.

Partially this was already done by the memory controller increasing that
address space by setting #address-cells and #size-cells to 2, but a full
DMA address translation would still cause truncation when traversing to
the top-level bus.

Fix this by setting #address-cells = <2> and #size-cells = <2> on the
top-level bus and adjusting all "reg" and "ranges" properties of its
children.

While at it, also move the PCI and GPU nodes back under the top-level
bus where they belong. The were put outside of it to work around this
same problem.

Signed-off-by: Thierry Reding <treding@nvidia.com>
History 2023-01-17 13:55:04 +01:00
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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.