pwm: jz4740: Enhance precision in calculation of duty cycle

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Calculating the hardware value for the duty from the hardware value of
the period resulted in a precision loss versus calculating it from the
clock rate directly.

(Also remove a cast that doesn't really need to be here)

Fixes: f6b8a57000 ("pwm: Add Ingenic JZ4740 support")
Cc: <stable@vger.kernel.org>
Suggested-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

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Paul Cercueil 2020-05-27 13:52:23 +02:00 • committed by Thierry Reding

parent b48d49e0d5

commit 9017dc4fbd

1 changed files with 3 additions and 3 deletions

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drivers/pwm/pwm-jz4740.c

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