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379ac9eb1f
Add a custom SoC attribute for Tegra to expose the HIDREV register fields to userspace via the sysfs. This register provides additional details about the type of device (eg, silicon, FPGA, etc) as well as revision. Exposing this information is useful for identifying the exact device revision and device type. For Tegra devices up until Tegra186, the majorrev and minorrev fields of the HIDREV register are used to determine the device revision and device type. For Tegra194, the majorrev and minorrev fields only determine the revision. Starting with Tegra194, there is an additional field, pre_si_platform (which occupies bits 20-23), that now determines device type. Therefore, for all Tegra devices, add a custom SoC attribute for the majorrev and minorrev fields and for Tegra194 add an additional attribute for the pre_si_platform field. Signed-off-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.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 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.