diff options
Diffstat (limited to 'arch/arm/plat-mxc/pwm.c')
| -rwxr-xr-x | arch/arm/plat-mxc/pwm.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c index b683d2eb6261..eb49057116f1 100755 --- a/arch/arm/plat-mxc/pwm.c +++ b/arch/arm/plat-mxc/pwm.c @@ -6,7 +6,7 @@ * published by the Free Software Foundation. * * Derived from pxa PWM driver by eric miao <eric.miao@marvell.com> - * Copyright 2009-2012 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright 2009-2013 Freescale Semiconductor, Inc. All Rights Reserved. */ #include <linux/module.h> @@ -87,11 +87,7 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) prescale = period_cycles / 0x10000 + 1; period_cycles /= prescale; - /* the chip document says the counter counts up to - * period_cycles + 1 and then is reset to 0, so the - * actual period of the PWM wave is period_cycles + 2 - */ - c = (unsigned long long)(period_cycles + 2) * duty_ns; + c = (unsigned long long)period_cycles * duty_ns; do_div(c, period_ns); duty_cycles = c; |