Commit af4fab8b authored Oct 24, 2019 by Uwe Kleine-König Committed by Thierry Reding Jan 20, 2020

pwm: rcar: Document inability to set duty_cycle = 0



When .apply() is called with state->duty_cycle = 0 the duty_ns parameter
to rcar_pwm_set_counter() is 0 which results in ph being 0 and
rcar_pwm_set_counter() returning -EINVAL.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

parent bca90082

drivers/pwm/pwm-rcar.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -3,6 +3,9 @@
		* R-Car PWM Timer driver
		*
		* Copyright (C) 2015 Renesas Electronics Corporation
		*
		* Limitations:
		* - The hardware cannot generate a 0% duty cycle.
		*/

		#include <linux/clk.h>

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