Commit 3b442c60 authored Jul 30, 2019 by Uwe Kleine-König Committed by Thierry Reding Sep 21, 2019

pwm: jz4740: Document known limitations



The JZ4740 PWM implementation doesn't fulfill the (up to now
insufficiently documented) requirements of the PWM API. At least
document them in the driver.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

parent f6abac03

drivers/pwm/pwm-jz4740.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -2,6 +2,11 @@
		/*
		* Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
		* JZ4740 platform PWM support
		*
		* Limitations:
		* - The .apply callback doesn't complete the currently running period before
		* reconfiguring the hardware.
		* - Each period starts with the inactive part.
		*/

		#include <linux/clk.h>