Re: [PATCH v2 1/7] ARM: sunxi: Introduce Allwinner A80 support

[Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>]

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On Sat, Sep 27, 2014 at 09:16:02PM +0800, Chen-Yu Tsai wrote:
> On Thu, Sep 25, 2014 at 9:25 PM, Maxime Ripard
> <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> wrote:
> > On Wed, Sep 24, 2014 at 10:48:55PM +0800, Chen-Yu Tsai wrote:
> >> The Allwinner A80 is a new Cortex octo-core A7/A15 big.LITTLE SoC.
> >> While it's processor cores and interconnecting bus are new, it
> >> re-uses many peripherals found in earlier Allwinner SoCs.
> >>
> >> Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
> >> ---
> >>  arch/arm/mach-sunxi/Kconfig | 5 +++++
> >>  arch/arm/mach-sunxi/sunxi.c | 9 +++++++++
> >>  2 files changed, 14 insertions(+)
> >>
> >> diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig
> >> index 1aaa1e1..72f222b 100644
> >> --- a/arch/arm/mach-sunxi/Kconfig
> >> +++ b/arch/arm/mach-sunxi/Kconfig
> >> @@ -42,4 +42,9 @@ config MACH_SUN8I
> >>       select MFD_SUN6I_PRCM
> >>       select RESET_CONTROLLER
> >>
> >> +config MACH_SUN9I
> >> +     bool "Allwinner A80 (sun9i) SoCs support"
> >
> > With the new naming scheme, I wonder wether it makes sense to have the
> > A80 displayed here and in the machine definition.
> 
> I expect anything that falls under sun9i to be compatible, or a trimmed
> down version. But that's just me.

Well, compatible is a rather vague notion. They will be different for
sure. Maybe not that different, but still.

> We know that Allwinner has released the A33, which should be compatible
> with the A23, sun8i.

Except that it would not be straight forward for an A33 user for
example that he needs to enable the A23 support.

> And the A83 has been announced, which looks like a trimmed down
> version of the A80. The next SoC should be arm64, and would not
> matter here.
> 
> Kevin, Shuge, could you provide us with the codenames for the A33 and
> A83, and what earlier SoC they are based on?

Even though it would be nice to know, it's not really the issue here.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

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