CLK_GET_RATE(9) Clock Framework CLK_GET_RATE(9)
NAME clk_get_rate - obtain the current clock rate (in Hz) for a clock source. This is only valid once the clock source has been enabled.
SYNOPSIS unsigned long clk_get_rate(struct clk * clk);
ARGUMENTS clk clock source
COPYRIGHT Kernel Hackers Manual 2.6. July 2015 CLK_GET_RATE(9)