rTCNTB0 = (PCLK7)freq
CPU frequency and voltage scaling code in the Linux(TM) kernel L i n u x C P U F r e q Dominik Brodowski [email=linux@brodo.de]linux@brodo.de[/email] Clock scaling allows you to change the clock speed of the CPUs on the fly. This is a nice method to save battery power, because the lower the clock speed, the less power the CPU consumes. Documents in this direc...
by yuchuan2008 - Linux文档专区 - 2008-12-18 12:58:04 阅读（1210） 回复（0）
FCLK, HCLK, and pclk FCLK is used by ARM920T.HCLK is used for AHB bus, which is used by the ARM920T, the memory controller, the interrupt controller, the LCD controller, the DMA and USB host block. pclk is used for APB bus, which is used by the peripherals such as WDT, IIS, I2C, PWM timer, MMC interface, ADC, UART, GPIO, RTC and SPI. he S3C2440A supports selection of Dividing Ratio between FCLK, H...
ChangeMPllValue((mpll_val>>12)&0xff, (mpll_val>>4)&0x3f, mpll_val&3);
ChangeClockDivider(key, 12);
1）FLCK、HCLK和pclk的关系
S3C2440有三个时钟FLCK、HCLK和pclk
s3c2440官方手册...
ADS1.2中关于时钟的C代码
如图 每个CPU的频率是399MHZ,为何还有后面的 1415数字表示什么意思?,表达的是最高达1415频率???? [ 本帖最后由 coologin 于 2008-11-30 23:15 编辑 ]
