How to modify CPU frequency on Tina Linux SDK with F1C100S

[SDK]/lichee/linux-3.10/arch/arm/boot/ DTS/sun3iw1p1-clk.dtsi Modify the assigned clock rate to the target frequency in Hz. As follows:

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";
};