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In order to support dynamic frequency scaling: * the cpuclk Device Tree node needs to be updated to describe a second set of registers describing the PMU DFS registers. * the clock-latency property of the CPUs must be filled, otherwise the ondemand and conservative cpufreq governors refuse to work. The latency is high because the cost of a frequency transition is quite high on those CPUs. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1404920715-19834-5-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net> |
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