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pwm: rcar: Improve accuracy of frequency division setting

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From: Ryo Kodama <ryo.kodama.vz@renesas.com>

When period_ns is set to the same value of RCAR_PWM_MAX_CYCLE in
rcar_pwm_get_clock_division(), this function should allow such value
for improving accuracy of frequency division setting.

Signed-off-by: Ryo Kodama <ryo.kodama.vz@renesas.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
This commit is contained in:
Ryo Kodama 2015-11-09 09:42:25 +09:00 committed by Thierry Reding
parent d6dbdf0dde
commit 72c16a9f98
1 changed files with 1 additions and 1 deletions
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2
drivers/pwm/pwm-rcar.c
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@ -81,7 +81,7 @@ static int rcar_pwm_get_clock_division(struct rcar_pwm_chip *rp, int period_ns)
max = (unsigned long long)NSEC_PER_SEC * RCAR_PWM_MAX_CYCLE *
(1 << div);
do_div(max, clk_rate);
if (period_ns < max)
if (period_ns <= max)
break;
}