ARM:imx:fix pwm period value
authorJason Chen <jason.chen@linaro.org>
Mon, 19 Dec 2011 03:23:28 +0000 (11:23 +0800)
committerSascha Hauer <s.hauer@pengutronix.de>
Mon, 19 Dec 2011 11:25:35 +0000 (12:25 +0100)
commit5776ac2eb33164c77cdb4d2b48feee15616eaba3
treeff2dee4d0f3aa296190dc1a7a7812587c199f14c
parent384703b8e6cd4c8ef08512e596024e028c91c339
ARM:imx:fix pwm period value

According to imx pwm RM, the real period value should be
PERIOD value in PWMPR plus 2.

PWMO (Hz) = PCLK(Hz) / (period +2)

Signed-off-by: Jason Chen <jason.chen@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@kernel.org
arch/arm/plat-mxc/pwm.c