4.19.260-atzlinux-ft9 内核，不支持 CPUFREQ

Linux atzlinux-d2000 4.19.260-atzlinux-ft9 # 4 SMP Fri Sep 30 22:47:12 CST 2022 aarch64 GNU/Linux

cpufreq-info 命令输出：

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU
  maximum transition latency: 4294.55 ms.

cpupower info
System does not support Intel's performance bias setting
analyzing CPU 0:

cpupower monitor
No HW Cstate monitors found

cpupower frequency-info
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU
  CPUs which run at the same hardware frequency: Not Available
  CPUs which need to have their frequency coordinated by software: Not Available
  maximum transition latency:  Cannot determine or is not supported.
Not Available
  available cpufreq governors: Not Available
  Unable to determine current policy
  current CPU frequency: Unable to call hardware
  current CPU frequency:  Unable to call to kernel

麒麟内核 initrd.img-5.4.18-55-generic 支持以上命令。
config-5.4.18-55-generic 中显示有驱动：
CONFIG_ARM64_PHYTIUM_CPUFREQ=y

这个驱动，在飞腾第 9 版本补丁中，没有发现。

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