Xilinx zynqmp cpu主频控制

参考

CPU frequency scaling
Common Clock Framework

内核启动打印

[    2.926159] cpufreq: cpufreq_online: CPU0: Running at unlisted freq: 1333333 KHz
[    2.933381] cpu cpu0: dev_pm_opp_set_rate: failed to find current OPP for freq 1333333320 (-34)
[    2.942153] cpufreq: cpufreq_online: CPU0: Unlisted initial frequency changed to: 1199999 KHz
[    2.950512] cpu cpu0: dev_pm_opp_set_rate: failed to find current OPP for freq 1333333320 (-34)

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