[U-Boot] [PATCH 3/6] sunxi: add Cubieboard2 support

[Ian Campbell]

On Thu, 2014-07-24 at 06:12 +0300, Siarhei Siamashka wrote:
> On Thu,  5 Jun 2014 19:00:14 +0100
> Ian Campbell <ijc at hellion.org.uk> wrote:
> 
> > This is a sun7i (A20) based followup to the sun4i (A10)
> > Cubieboard. It has GMAC using MII mode.
> > 
> > Signed-off-by: Ian Campbell <ijc at hellion.org.uk>
> > Acked-by: Hans de Goede <hdegoede at redhat.com>
> 
> This board is using exactly the same PCB as the Cubieboard1. And only
> the SoC is different (Allwinner A20 instead of the pin-compatible
> Allwinner A10).
> 
> Before piling up more board configurations, we might want to consider
> supporting both Cubieboard1 and Cubieboard2 with a single u-boot binary
> (and perhaps keep Cubieboard1 and Cubieboard2 as aliases in boards.cfg).
> The Allwinner SoCs have support for runtime identification of the SoC
> type (sun4i/sun5i/sun7i) via the VER_REG (Version Register) located at
> the address 0x01C00024 as explained in the Allwinner A20 user manual.
> This requires replacing all the CONFIG_SUN4I/CONFIG_SUN5I/CONFIG_SUN7I
> ifdefs in the u-boot code with a runtime SoC type checks, but there
> are not too many places affected (mostly just the DRAM code).

This all sounds nice but is very certainly a future piece of work not
related to this patch submission.

> The newly added Cubieboard2 from your patch appears to be missing the
> important AXP209_POWER option. So the patch is not good enough to be
> pushed anywhere in its current form.

It works for me regardless and always has. The AXP209 config is trivial
to add now that Hans has added the relevant code. 

Ian.