[GIT PULL] ARM: dts: aspeed: Changes for 4.14

[Arnd Bergmann]

On Thu, Aug 24, 2017 at 5:06 PM, Cédric Le Goater <clg at kaod.org> wrote:
> On 08/24/2017 01:13 PM, Arnd Bergmann wrote:
>> On Thu, Aug 24, 2017 at 6:14 AM, Joel Stanley <joel at jms.id.au> wrote:
>>> Hi Arnd and Olof,
>>> Aspeed devicetree updates for 4.14
>>>
>>>  - fix to expose the full flash windows on ast2400.
>>>
>>
>> Pulled into next/dt, thanks! Can you explain the CONFIG_VMSPLIT_2G
>> requirement mentioned in the changelog here? Will it stop working with
>> a normal multiplatform configuration that uses VMSPLIT_3G, or just
>> have no effect?
>
> The kernel will still boot but, without VMSPLIT_2G, the SPI flash
> controller driver will fail to map the memory windows of the flash
> devices. And the system will surely lack a root filesystem.

Hmm, why does the flash controller even map the entire area?

IIRC, NOR flash controllers normally have a 'ranges' property that
gets set up to list the available memory ranges, and the chips
attached to them have the 'reg' property that matches the actual
size.

     Arnd