[Arm-dev] Centos support for Marvell Armada 7k/8k

On 09/29/2017 05:35 AM, Marcin Wojtas wrote:
> Hi,
> 
> As for the news, unmodified CentOS-7-aarch64 downloaded from
> http://mirror.centos.org/altarch/7/isos/aarch64/
> works great on Marvell Armada 8040 MacchiatoBin (http://macchiatobin.net/).
> 
> You can see vmlinuz-4.11.0-22.el7a.aarch64 bootlog here:
> https://pastebin.com/kuDQRzDV
> 

Oh very nice!

> All interfaces that are supported in the mainline linux kernel (with
> ACPI) work fine with Centos image as well. However as there's an
> effort to add ACPI support to remaining interfaces (e.g. network or
> sd/mmc controllers), we would like backport upstream patches to your
> tree. Hence I have a couple of questions in addition to what can be
> found in https://wiki.centos.org/SpecialInterestGroup/AltArch/AArch64/Contributions:
> 
> 1. Are the Centos kernel sources accessible in some kind of public repository?
> 

Yes. You can find the repository details at
https://git.centos.org/summary/?r=sig-altarch/kernel in the
sig-altarch7-aarch64 branch.

We don't store the larger tarballs in git though, so it may help for you
to look at https://wiki.centos.org/Sources/ to see how to interact with
our look-aside repository.

> 2. When sending patches to arm-dev, do you require original commit log
> and URL to adequate patch in the kernel.org?
> 

Yes.

> 3. Is patch existence in linux-next sufficient for you to accept it?
> 

Yes.

> 4. I imagine proceeding in two steps - align drivers between v4.11 and
> mainline first and later add (still being developed) ACPI support
> patches once they are ready and merged upstream. Would it be ok for
> you?
>

As long as you're not disabling existing support in the kernel patches
(You can't turn acpi off, for example) and the patches are specific to
your hardware, that sounds fine.



> 5. Do you have some kind of merge windows/release cycles to follow,
> when upstreaming patches?
> 

No, only when building updated install media.

> Given current quality of Centos support for new family of ARM64 SoCs,
> how about mentioning Armada 7k/8k family in 'Supported Hardware'
> section on https://wiki.centos.org/SpecialInterestGroup/AltArch/AArch64


I can add it as developmental support while we get the network pieces
and acpi sorted out. Will that work for you?



-- 
Jim Perrin
The CentOS Project | http://www.centos.org
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