Commit 72c16a9f authored Nov 09, 2015 by Ryo Kodama Committed by Thierry Reding Dec 16, 2015

pwm: rcar: Improve accuracy of frequency division setting



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>

parent d6dbdf0d

drivers/pwm/pwm-rcar.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;
		}

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