[PATCH] ARM: OMAP2+: timer: remove CONFIG_OMAP_32K_TIMER

[Paul Walmsley]

On Thu, 8 Nov 2012, Jon Hunter wrote:

> On 11/08/2012 11:58 AM, Paul Walmsley wrote:
> > On Thu, 8 Nov 2012, Jon Hunter wrote:
> > 
> >> Igor was mentioning a h/w scenario where the 32kHz source is not
> >> present. However, I am not sure which devices support this and is
> >> applicable too.
> > 
> > Pretty sure Igor is referring to the AM3517/3505.  This is very poorly 
> > documented, but can be observed in the AM3517 TRM Rev B (SPRUGR0B) Figure 
> > 4-23 "PRM Clock Generator" and the AM3517 DM Rev C (SPRS550C) Section 4 
> > "Clock Specifications".
> 
> But AFAICT, even in that h/w configuration the internal 32k
> oscillator will be used

Just to clarify, there's no internal 32k oscillator used on the 3517/3505; 
just a divider from the HF clock.

> and so the gptimer will still have a 32k clock source.

That's a good question and you might want to check with Igor on that one,
the AM3517 TRM conflicts with the DM as to whether it's available to the 
GPTIMER or not :-(


- Paul