为什么/sys/devices/system/cpu/cpu0下没有cpufreq，该如何调频

• shenqidpanzi

  Posts: 18

  Joined: 2025-02-10 11:36

  2025-02-10 11:45

  内核里我也配置了，但是没有用，求助
  
  #
  # CPU Power Management
  #
  
  #
  # CPU Frequency scaling
  #
  CONFIG_CPU_FREQ=y
  CONFIG_CPU_FREQ_GOV_ATTR_SET=y
  CONFIG_CPU_FREQ_GOV_COMMON=y
  CONFIG_CPU_FREQ_STAT=y
  CONFIG_CPU_FREQ_DEFAULT_GOV_PERFORMANCE=y
  # CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE is not set
  # CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE is not set
  # CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND is not set
  # CONFIG_CPU_FREQ_DEFAULT_GOV_CONSERVATIVE is not set
  # CONFIG_CPU_FREQ_DEFAULT_GOV_SCHEDUTIL is not set
  # CONFIG_CPU_FREQ_DEFAULT_GOV_INTERACTIVE is not set
  CONFIG_CPU_FREQ_GOV_PERFORMANCE=y
  CONFIG_CPU_FREQ_GOV_POWERSAVE=y
  CONFIG_CPU_FREQ_GOV_USERSPACE=y
  CONFIG_CPU_FREQ_GOV_ONDEMAND=y
  CONFIG_CPU_FREQ_GOV_CONSERVATIVE=y
  CONFIG_CPU_FREQ_GOV_SCHEDUTIL=y
  CONFIG_CPU_FREQ_GOV_INTERACTIVE=y
  
  root@luckfox:/sys/devices/system/cpu/cpu0# pwd
  /sys/devices/system/cpu/cpu0
  root@luckfox:/sys/devices/system/cpu/cpu0# ls
  cpu_capacity of_node subsystem uevent
  hotplug power topology
  root@luckfox:/sys/devices/system/cpu/cpu0# ^C

  • Quote

&pvtpll_core {
        assigned-clock-rates = <要设置的频率>;
};

cat /sys/kernel/debug/clk/armclk/clk_rate