Re: [PATCH] clk: bcm: Add driver for Northstar ILP clock

[Ray Jui]

On 7/29/2016 1:55 PM, Florian Fainelli wrote:
> On 07/29/2016 01:52 PM, RafaÅ MiÅecki wrote:
> > On 29 July 2016 at 22:49, Ray Jui <ray.jui@xxxxxxxxxxxx> wrote:
> > > On 7/29/2016 1:46 PM, RafaÅ MiÅecki wrote:
> > > > On 29 July 2016 at 22:44, Ray Jui <ray.jui@xxxxxxxxxxxx> wrote:
> > > > > On 7/29/2016 5:58 AM, RafaÅ MiÅecki wrote:
> > > > > > From: RafaÅ MiÅecki <rafal@xxxxxxxxxx>
> > > > > >
> > > > > > This clock is present on cheaper Northstar devices like BCM53573 or
> > > > > > BCM47189 using Corex-A7. This driver uses PMU (Power Management Unit)
> > > > > > to calculate clock rate and allows using it in a generic (clk_*) way.
> > > > >
> > > > > I thought Northstar uses Cortex A9 instead of A7?
> > > >
> > > >
> > > > [    0.000000] CPU: ARMv7 Processor [410fc075] revision 5 (ARMv7),
> > > > cr=10c5387d
> > > > [    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT aliasing
> > > > instruction cache
> > > > [    0.000000] Machine model: Tenda AC9
> > >
> > > Yeah ARMv7 instruction set but the core is Cortex A7. Both Cortex A7 and A9
> > > use ARMv7 instructions.
> >
> > OK, sorry for irrelevant part then :)
> >
> > This is from BCM4709C0:
> > bcma: bus0: Core 10 found: ARM Cortex A9 core (ihost) (manuf 0x4BF, id
> > 0x510, rev 0x07, class 0x0)
> >
> > This is from BCM47189B0::
> > bcma: bus0: Core 3 found: ARM CA7 (manuf 0x4BF, id 0x847, rev 0x00, class 0x0)
>
> This is indeed a Cortex A7-based chip, not clear if putting this chip in
> the Northstar family is accurate here because it really seems to have a
> different architecture from the NS/NSP family here...

Okay I got it. Good to know! I got confused by it being called 
"Northstar" because as far I can remember, none of the Northstar chips 
uses Cortex A7 (or maybe even that assumption is incorrect, :))

Thanks,

Ray