[U-Boot] [PATCH 1/5][v2] armv8: usec2ticks function defined

[Bansal Aneesh]

> -----Original Message-----
> From: York Sun [mailto:yorksun at freescale.com]
> Sent: Thursday, November 19, 2015 10:26 PM
> To: Bansal Aneesh-B39320 <aneesh.bansal at freescale.com>; u-boot at lists.denx.de
> Cc: Gupta Ruchika-R66431 <ruchika.gupta at freescale.com>; Kushwaha Prabhakar-
> B32579 <prabhakar at freescale.com>
> Subject: Re: [PATCH 1/5][v2] armv8: usec2ticks function defined
> 
> On 11/18/2015 09:41 PM, Aneesh Bansal wrote:
> > usec2ticks() function has been defined for ARMv8 which will be used by
> > SEC Driver.
> >
> > Signed-off-by: Aneesh Bansal <aneesh.bansal at freescale.com>
> > ---
> > Changes in v2:
> > New Patch Set created with an additional patch.
> >
> >  arch/arm/cpu/armv8/generic_timer.c | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> >
> > diff --git a/arch/arm/cpu/armv8/generic_timer.c
> > b/arch/arm/cpu/armv8/generic_timer.c
> > index 8e60bae..8f47a82 100644
> > --- a/arch/arm/cpu/armv8/generic_timer.c
> > +++ b/arch/arm/cpu/armv8/generic_timer.c
> > @@ -40,3 +40,14 @@ unsigned long timer_read_counter(void)  #endif
> >  	return cntpct;
> >  }
> > +
> > +unsigned long usec2ticks(unsigned long usec) {
> > +	ulong ticks;
> > +	if (usec < 1000)
> > +		ticks = ((usec * (get_tbclk()/1000)) + 500) / 1000;
> > +	else
> > +		ticks = ((usec / 10) * (get_tbclk() / 100000));
> > +
> > +	return ticks;
> > +}
> >
> 
> Is existing usec_to_tick() in lib/time.c good for you?
> 
> York

The CAAM driver in U-Boot uses the function usec2ticks().
This is already defined for previous SoC's LS1020 (ARM v7) and PPC.

Aneesh