title: How to configure clock through Device Tree?
body: <p>I was trying to configure the clock for a new device included to the Kernel.
  I have an older version of the Kernel, in which the device already included.</p>
  
  <p>So I tried to make similar changes to the Kernel for the clock.
  But in the older version of the Kernel there was a C file for configuring the clock for almost all Devices, 
  but I couldn't find any similar file in the newer Kernel.</p>
  
  <p>After my investigation I found that, in newer versions of the Kernel the parameters for configuring the clocks are passed to the Kernel through the Device Tree.
  So I tried to change the DT to include the clock for new device , but I couldn't succeed completely.
  So my questions are:</p>
  
  <p>1)How the Kernel get parameters and register addresses  for configuring the clock for a particular device </p>
  
  <p>2)Can we access this information(like register adders ) in Kernel or Driver?</p>
  
  <p>3)Is there any other way , that we can use the registers directly in the driver or Kernel to set
    the clock (like frequency )</p>