clk_round_rate — adjust a rate to the exact rate a clock can provide
long clk_round_rate ( | struct clk * clk, |
unsigned long rate) ; |
This answers the question “if I were to pass rate
to clk_set_rate
,
what clock rate would I end up with?” without changing the hardware
in any way. In other words:
rate = clk_round_rate(clk, r);
and:
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.