如何把8147或8148 A8的cpu频率提高至1GHz

1. 修改uboot让A8运行到1GHz，u-boot/arch/arm/include/asm/arch-ti81xx/clocks_ti814x.h

2. 供电电压是否是1.35V。

#define OSC_0_FREQ 20

/* Put the pll config values over here */
#define AUDIO_N 19
#define AUDIO_M 500
#define AUDIO_M2 2
#define AUDIO_CLKCTRL 0x801

#define MODENA_N 0x1
#define MODENA_M 0x3C
#define MODENA_M2 1
#define MODENA_CLKCTRL 0x1

#define L3_N 19
#define L3_M (pg_val_ti814x(880, 800))
#define L3_M2 4
#define L3_CLKCTRL 0x801

#define DDR_N 19
#define DDR_M (pg_val_ti814x(666, 900))
#define DDR_M2 2
#define DDR_CLKCTRL 0x801

#define DSP_N 19
#define DSP_M 500
#define DSP_M2 1
#define DSP_CLKCTRL 0x801

#define DSS_N 19
#define DSS_M (pg_val_ti814x(800, 800))
#define DSS_M2 4
#define DSS_CLKCTRL 0x801

#define IVA_N 19
#define IVA_M (pg_val_ti814x(612, 612))
#define IVA_M2 2
#define IVA_CLKCTRL 0x801

#define ISS_N 19
#define ISS_M 800
#define ISS_M2 (pg_val_ti814x(2, 2))
#define ISS_CLKCTRL 0x801

#define USB_N 19
#define USB_M 960
#define USB_M2 (pg_val_ti814x(1, 5))
#define USB_CLKCTRL 0x200a0801

clocks_ti814x.h对应的文件内容如上，请问要修改那几个值，具体改成多少？有文档可以参考吗？

你好，

请参考git上最新的uboot相关代码：
arago-project.org/.../

git上uboot的链接：
arago-project.org/.../