High precision Timer of DM8168

Hi everyone,

   I am a beginner of DM8168, now I want a high frequency clock, which can be programmed and interupted within 1 milliseconds.

   The precision of usleep seems not so high to do this work.

   So, I think maybe I should use the timer hardware on the board to implement this work.

   I found in the kernel, a 27Mhz clock was registed in clock816x_data.c

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static struct clk sys_clkin_ck = {

.name = "sys_clkin_ck",

.ops = &clkops_null,

.rate = 27000000,

.flags = RATE_IN_TI816X,

};

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  But how to use it? Is there any example about how to set the timer ?

  Thank you.

Best wishes,

lei