clk_round_rate — adjust a rate to the exact rate a clock can provide
|struct clk * clk,|
|unsigned long rate|
This answers the question “if I were to pass
what clock rate would I end up with?” without changing the hardware
in any way. In other words:
rate = clk_round_rate(clk, r);
clk_set_rate(clk, r); rate = clk_get_rate(clk);
are equivalent except the former does not modify the clock hardware in any way.
Returns rounded clock rate in Hz, or negative errno.