https://www.phoronix.com/scan.php?page=news_item&px=Thermal-Cooling-Tegra-Devfreq
https://lkml.org/lkml/2021/5/31/252
> Some hardware versions of NVIDIA Tegra SoCs support higher freqs and they > are producing much more heat than the other versions. We found that CPU > throttling may be not enough on devices like Asus Transformer TF700T, > which is Tegra30 tablet device. This series adds thermal cooling support > to the NVIDIA Tegra30+ devfreq which cools down SoC by throttling memory > frequency on overheat.
NVIDIA Tegra SoC的某些版本支持更高的频率,因而散发更多热量。CPU throttling 不能够处理这些设备。 这些补丁提供了针对此类设备的降温支持。通过限制(throttling)GPU 内存频率来降温,驱动模块为devfreq。
这里有两个问题: 1) cpu throttling对应的内核代码是什么?通过什么机制throttling的?
2)合入的补丁位置