Shulou(Shulou.com)06/01 Report--

Whether the addition of cooling driver in Linux 5.13 can reduce the frequency of Intel CPU, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Linux 5.13 will introduce the "intel_tcc_cooling" driver, which allows users to set a temperature threshold that is lower than the default setting of CPU, thus reducing the clock rate of the processor core in advance to help cool the newer Intel mobile / desktop CPU.

This new driver for Linux 5.13 allows you to set a lower threshold / offset for the activation temperature of the thermal control circuit (TCC,Thermal Control Circuit). If you want to set the frequency reduction at a temperature lower than the default critical temperature, Intel CPU supports applying an offset (TCC offset) through MSR, rather than waiting until the default TCC activation temperature is reached.

The final result still depends on the specific Intel platform, as well as the frequency reduction speed and activity of CPU, this "intel_tcc_cooling" driver is only used to set up TCC Offset MSR.

This new driver can be enabled through the INTEL_TCC_COOLING Kconfig build switch. The current form of driver supports Skylake to Comet Lake processors, as well as Tiger Lake processors.

This Intel cooling driver will be introduced into the system as part of the cooling update of the Linux 5.13 merge window.

This is the answer to the question about whether the addition of cooling drivers in Linux 5.13 can reduce the frequency of Intel CPU. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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