Name

clk_round_rate — adjust a rate to the exact rate a clock can provide

Synopsis

long clk_round_rate (struct clk * clk,
 unsigned long rate);
 

Arguments

clk

clock source

rate

desired clock rate in Hz

Description

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.