[PATCH v5] clocksource: dw_apb_timer: Add common DTS glue for dw_apb_timer

[dinguyen@altera.com (Dinh Nguyen)]

On Wed, 2012-07-11 at 23:08 +0200, Pavel Machek wrote:
> Hi!
> 
> > From: Dinh Nguyen <dinguyen@altera.com>
> 
> Not that it matters, but it should probably be from: me, since I did
> the original version...

I apologize, I just took over the next day since my submission for
Altera's socfpga port is dependent on this. 

> 
> > Make a common device tree glue for clocksource/dw_apb_timer.
> > Move mach-picoxcell/time.c to be a generic device tree application
> > of the dw_apb_timer.
> > 
> > Configure mach-picoxcell to use the dw_apb_timer_of device tree
> > implementation in drivers/clocksource.
> 
> > @@ -25,11 +32,12 @@ static void timer_get_base_and_rate(struct device_node *np,
> >  	if (!*base)
> >  		panic("Unable to map regs for %s", np->name);
> >  
> > -	if (of_property_read_u32(np, "clock-freq", rate))
> > -		panic("No clock-freq property for %s", np->name);
> > +	if (of_property_read_u32(np, "clock-freq", rate) &&
> > +		of_property_read_u32(np, "clock-frequency", rate))
> > +		panic("No clock-frequency property for %s", np->name);
> >  }
> >  
> 
> But this should be ||, not &&, I guess.

Actually the way the code was written, it should be &&. Since
of_property_read_u32 returns 0 for success, doing an OR will fail if 1
of the conditions is true. We only want to fail if both conditions fail.

Dinh
> 
> Thanks for the patch,
> 									Pavel
>