Re: [PATCH] ARM: bcm2835_defconfig: add minimal support for Raspberry Pi4

[Marek Szyprowski]

Hi Nicolas

On 12.02.2020 19:31, Nicolas Saenz Julienne wrote:
> Hi Marek,
> On Wed, 2020-02-12 at 11:20 +0100, Marek Szyprowski wrote:
>> Add drivers for the minimal set of devices needed to boot Raspberry Pi4
>> board.
>>
>> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> Just so you know, the amount of support on the RPi4 you might be able to get
> updating bcm2835_defconfig's config is very limited. Only 1GB of ram and no
> PCIe (so no USBs).

Yes, I know. A lots of core features is missing: SMP, HIGHMEM, LPAE, PCI 
and so on, but having a possibility to boot RPi4 with this defconfig 
increases the test coverage.

> FYI I've been working on getting a workable configuration for arm32, short of
> creating a new config altogether:
> https://www.mail-archive.com/linuxppc-dev@xxxxxxxxxxxxxxxx/msg163770.html
>
> That said, if you insist on booting with bcm2835_defconfig, I have no problem
> with the patch.

Right, having a proper multi defconfig with LPAE is also needed on other 
boards. I would add VIRTUALIZATION and KVM to it too.

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland