Re: [Gumstix-users] Scott Ellis' PWM & kernel 3.0

[Scott E. <sc...@ju...>]

The new [master] branch in that project has support for multiple
timers with the original 0-100% duty-cycle outputs. See the README.

The [servo] branch does servo-type outputs. The timers aren't selectable
in that branch yet. You always get all 4 timers.

Both branches have the clock enable fix for new kernels.

http://github.com/scottellis/omap3-pwm

Scott

On Tue, 2011-08-16 at 21:29 +0300, Tuomas Kulve wrote:
> On 08/16/2011 08:29 PM, Scott Ellis wrote:
> > It might be enough to call pwm_enable_clock() before trying
> > to access the CM_CLKSEL_CORE register in use_sys_clk().
> >
> > So either move use_sys_clk() to the open() function or move the
> > pwm_enable_clock() into init().
> 
> I moved pwm_enable_clock() into init() to enable clocks already there 
> because use_sys_clk() touches two PWMs and in open() only one would be 
> enabled (although I don't know if there are separate clocks for all or 
> how it works..).
> 
> Any way, now I didn't experience crashes anymore, so thanks! :)
> 
> Next thing is to figure what numbers this four-channel version actually 
> takes in but that's a task for tomorrow. I managed to get it from 99% to 
> 0% but then to nothing.
>