clk gating的优点在于设计简单,省电明显,clk停掉信息不丢失。power gating则更加复杂,但是省电效果也很明显,尤其是消费电子,要知道很多部件工作时间远远少于idle时间,所以节省静态功耗更有意义。power gating的缺点在于电源关闭之后信息会丢失,所以重新工作的时候,需要一段时间来准备,需要重新给电源网络供电,重新启动clk,重...
在电子设备的功耗管理中，两种策略被广泛应用，分别是clk gating和power gating。其中，clk gating通过关闭模块的时钟（clk）来降低功耗，这通常能显著减少动态功耗，因为clk信号需要驱动大量的缓冲器和寄存器，其翻转率最高。然而，关闭clk意味着在该模块再次激活时，需要额外时间来唤醒系统，即增加了一定的...
cp信号用于上层模块的clk信号输入,te信号置0,可用于test代码,基本思路为在输入时钟cp的下降沿检测使能信号,使能信号e有效,在输入cp接下来的上升沿将输出时钟q同步,使能信号无效则输出时钟依然为0。在输入时钟cp的下降沿对e进行采样,其优点在于避免了毛刺的产生,qd会在cp的下降沿输出,等待cp到达上升沿得到输出的时钟...
gating, rate adjustment, muxing or other operations. This framework is enabled with the CONFIG_COMMON_CLK option. The interface itself is divided into two halves, each shielded from the details of its counterpart. First is the common definition of struct clk which unifies the framework-level acc...
| 150 | 9 | 0 | 141 | 0 | N/A || All Paths:| 29196 | 28483 | 798 | 683 | 31 | N/A |+---+---+---+---+---+---+---+ Hi,What could be a reason for ignoring Clock Gating checks by optDesign and timeDesign?Thanks a lot.-Boris Oldest Votes Newest Kari ...
CCGR(CCM Clock Gating Register )接口(翻译) 当进入或离开低功耗模式时,CCM可以控制CCM_ANALOG中的PLL。在开机重置(POR)后进入低功耗模式之前,软件必须在CCM_ANALOG中设置PLL覆盖。 一个逻辑领域有四个级别的低功耗模式: No need RUN STOP WAIT CCM仅在域状态在STOP之间切换时采取行动(深度睡眠模式与STOP相同)。
> clk-gating can be used to turn the clks-off after a very short > duration of request inactivity say 200ms - (which can be used to save > the power of some voltage rail or something) > While runtime-PM would need ~10sec since it involves chain of devices ...
32-kHz clock. This clock is fed back into the PRCM for clock gating. (See the CLK32KDIV...
MMC_CLKGATE was once invented to save power by gating the bus clock at request inactivity. At that time it served its purpose. The modern way to deal with power saving for these scenarios, is by using runtime PM. Nowadays, several host drivers have deployed runtime PM, but for those ...
在TRM内3.7.3.3 CPU Subsystem Clock (SYSCLK and PERx.SYSCLK) The CPU provides a clock (SYSCLK) to the CLA, DMA, and most peripherals. This clock is identical to PLLSYSCLK, but is gated when the CPU enters HALT mode. Each peripheral clock has its own independent...