rk3288 andorid7.1 修改cpu频率

更改cpu频率

echo userspace> /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
echo 1416000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_setspeed

//查看当前cpu频率
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq

//查看支持cpu频率
cat sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
126000 216000 408000 600000 696000 816000 1008000 1200000 1416000 1512000 1608000

在kernel 的dts注释掉 cpu 频率部分

            rockchip,pvtm-temp-prop = <(-18) (-18)>;
            rockchip,thermal-zone = "soc-thermal";

•           opp-126000000 {
  

+/* opp-126000000 {
opp-hz = /bits/ 64 <126000000>;
opp-microvolt = <950000 950000 1350000>;
opp-microvolt-L0 = <950000 950000 1350000>;

                    opp-microvolt-L3 = <950000 950000 1350000>;
                    clock-latency-ns = <40000>;
                    opp-suspend;

•           };
  

•           };  */