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里面找到static struct pll_config pll4_cfg_tbl[]这一个就是cpu的原始频率配置文件，里面有很多的候选的频率：

static struct pll_config pll4_cfg_tbl[] = {

[0] = { 36, 1, 2 }, /* 700.8 MHz */

[1] = { 52, 1, 2 }, /* 1008 MHz */

[2] = { 63, 0, 1 }, /* 1209.6 MHz */

[3] = { 73, 0, 1 }, /* 1401.6 MHz */

[4] = { 60, 0, 1 }, /* 1152 MHz */

[5] = { 57, 1, 2 }, /* 1104 MHz */

[6] = { 54, 1, 2 }, /* 1046.7 MHz */

};

你可以往里面增加新的值，也可以把这个保持不变。

然后找到自己机型的频率表定义

/*

* ACPU freq tables used for different PLLs frequency combinations. The

* correct table is selected during init.

*

* Table stepping up/down entries are calculated during boot to choose the

* largest frequency jump that's less than max_speed_delta_khz on each PLL.

*/

找到以后可以仿照其他型号的机器给