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Commit 6cc3d0e9a0 ("cpufreq: tegra186: add
CPUFREQ_NEED_INITIAL_FREQ_CHECK flag") fixed CPUFREQ support for
Tegra186 but as a consequence the following warnings are now seen on
boot ...
cpufreq: cpufreq_online: CPU0: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed to: 2035200 KHz
cpufreq: cpufreq_online: CPU1: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU1: Unlisted initial frequency changed to: 2035200 KHz
cpufreq: cpufreq_online: CPU2: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU2: Unlisted initial frequency changed to: 2035200 KHz
cpufreq: cpufreq_online: CPU3: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU3: Unlisted initial frequency changed to: 2035200 KHz
cpufreq: cpufreq_online: CPU4: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU4: Unlisted initial frequency changed to: 2035200 KHz
cpufreq: cpufreq_online: CPU5: Running at unlisted freq: 0 KHz
cpufreq: cpufreq_online: CPU5: Unlisted initial frequency changed to: 2035200 KHz
Fix this by adding a 'get' callback for the Tegra186 CPUFREQ driver to
retrieve the current operating frequency for a given CPU. The 'get'
callback uses the current 'ndiv' value that is programmed to determine
that current operating frequency.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
[ Viresh: Return 0 on error ]
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
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
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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.