clk_round_rate (9) - Linux Manuals

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

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.

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