clk_round_rate (9) Linux Manual Page
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:
clk_set_rate(clk, r); rate = clk_get_rate(clk);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.