打開平臺的clock配置dts文件, 位於[sdk]/lichee/linux-3.10/arch/arm/boot/dts/, 文件名是sun3iw1p1-clk.dtsi
找到pll cpu, 將assigned-clock-rates修改成目標的頻率, 單位是Hz. 以下:linux
clk_pll_cpu: pll_cpu { #clock-cells = <0>; compatible = "allwinner,sunxi-pll-clock"; lock-mode = "none"; assigned-clock-rates = <696000000>; clock-output-names = "pll_cpu"; };