On Tue, Nov 15, 2011 at 07:47:58PM +0100, Takashi Iwai wrote:
> At Fri, 11 Nov 2011 14:12:58 -0800,
> Simon Que wrote:
> >
> > If the firmware did not initialize the backlight PWM registers, set up a
> > default PWM frequency of 200 Hz. This is determined using the following
> > formula:
> >
> >
At Fri, 11 Nov 2011 14:12:58 -0800,
Simon Que wrote:
>
> If the firmware did not initialize the backlight PWM registers, set up a
> default PWM frequency of 200 Hz. This is determined using the following
> formula:
>
> freq = refclk / (128 * pwm_max)
>
> The PWM register allows the max PWM va
On Fri, Nov 11, 2011 at 02:17:20PM -0800, Olof Johansson wrote:
> On Fri, Nov 11, 2011 at 02:12:58PM -0800, Simon Que wrote:
> > If the firmware did not initialize the backlight PWM registers, set up a
> > default PWM frequency of 200 Hz. This is determined using the following
> > formula:
> >
>
On Fri, Nov 11, 2011 at 02:12:58PM -0800, Simon Que wrote:
> If the firmware did not initialize the backlight PWM registers, set up a
> default PWM frequency of 200 Hz. This is determined using the following
> formula:
>
> freq = refclk / (128 * pwm_max)
>
> The PWM register allows the max PWM
If the firmware did not initialize the backlight PWM registers, set up a
default PWM frequency of 200 Hz. This is determined using the following
formula:
freq = refclk / (128 * pwm_max)
The PWM register allows the max PWM value to be set. So we want to use
the formula, where freq = 200:
pw
