Aaron Kling b6c886e75e cpufreq: tegra186: add OPP support and set bandwidth
Add support to use OPP table from DT in Tegra186 cpufreq driver.
Tegra SoC's receive the frequency lookup table (LUT) from BPMP-FW.
Cross check the OPP's present in DT against the LUT from BPMP-FW
and enable only those DT OPP's which are present in LUT also.

The OPP table in DT has CPU Frequency to bandwidth mapping where
the bandwidth value is per MC channel. DRAM bandwidth depends on the
number of MC channels which can vary as per the boot configuration.
This per channel bandwidth from OPP table will be later converted by
MC driver to final bandwidth value by multiplying with number of
channels before being handled in the EMC driver.

If OPP table is not present in DT, then use the LUT from BPMP-FW
directy as the CPU frequency table and not do the DRAM frequency
scaling which is same as the current behavior.

Change-Id: I11a37b2bd7d6b7a7ee9d270ecd0430430a407d65
Signed-off-by: Aaron Kling <webgeek1234@gmail.com>
2025-11-11 15:15:05 +00:00
2024-09-01 20:43:24 -07:00
2024-11-07 14:14:59 -08:00
2022-09-28 09:02:20 +02:00
2024-11-17 14:15:08 -08:00
2024-03-18 03:36:32 -06:00

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.
S
Description
No description provided
Readme
4.6 GiB
0 Stars 1 Watchers 0 Forks
Languages
C 96.9%
Assembly 1%
Rust 0.6%
Shell 0.6%
Python 0.4%
Other 0.3%