[PATCH V5] ARM: OMAP5/DRA7: realtime_counter: Configure CNTFRQ register
tony at atomide.com
Thu Oct 10 13:15:40 EDT 2013
* Santosh Shilimkar <santosh.shilimkar at ti.com> [131010 06:20]:
> On Thursday 10 October 2013 03:43 AM, Sricharan R wrote:
> > From: R Sricharan <r.sricharan at ti.com>
> > The realtime counter called master counter, produces the count
> > used by the private timer peripherals in the MPU_CLUSTER. The
> > CNTFRQ per cpu register is used to denote the frequency of the counter.
> > Currently the frequency value is passed from the
> > DT file, but this is not scalable when we have other non-DT guest
> > OS. This register must be set to the right value by the
> > secure rom code. Setting this register helps in propagating the right
> > frequency value across OSes.
> > More discussions and the reason for adding this in a non-DT
> > way can be seen from below.
> > http://firstname.lastname@example.org/msg93832.html
> > So configuring this secure register for all the cpus here.
> > Cc: Santosh Shilimkar <santosh.shilimkar at ti.com>
> > Cc: Nishanth Menon <nm at ti.com>
> > Cc: Rajendra Nayak <rnayak at ti.com>
> > Cc: Marc Zyngier <marc.zyngier at arm.com>
> > Cc: Mark Rutland <mark.rutland at arm.com>
> > Cc: Tony Lindgren <tony at atomide.com>
> > Tested-by: Nishanth Menon <nm at ti.com>
> > Acked-by: Santosh Shilimkar <santosh.shilimkar at ti.com>
> > Signed-off-by: Sricharan R <r.sricharan at ti.com>
> > ---
> > [V5] Removed the use of extern variable in omap-smp.c
> > as per suggestion from Santosh Shilimkar <santosh.shilimkar at ti.com>
> Thanks for the updates Sricharan. Looks fine now.
> Tony, Can you apply this version if you are fine with it.
Yes thanks looks good to me now. Applying into omap-for-v3.13/soc.
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