RE: [PATCH 0/3] tty: serial: Add Cortina-Access UART driver and platform support

[Jason Li]

Hi Arnd,

Your memory is truly amazing; you even remember a submission from a few years ago.
Since the last sumbission was drop so I though restart a new one this time.
OK, I'll review all feedback and fix them for the next V6 submission.

Yes, we expect actual end-user products based on these SoCs, and our intention is to provide complete upstream support over time. The UART driver and DTS support submitted in this series are the first step in that effort.

Cortina-System and Cortina-Access are now totally different company.
Current aarch64 chipset are totally different with legacy gemini processor.
Realtek has many business unit, different BU may have upstream plan but they are individual.
Although Cortina-Access is a wholly-owned subsidiary of Realtek, our product development is entirely independent.


Thanks,
Jason
> -----Original Message-----
> From: Arnd Bergmann <arnd@xxxxxxxx>
> Sent: Wednesday, June 10, 2026 8:51 PM
> To: Jason Li <jason.lee651024@xxxxxxxxx>; Jason Li
> <jason.li@xxxxxxxxxxxxxxxxxx>; Greg Kroah-Hartman
> <gregkh@xxxxxxxxxxxxxxxxxxx>; Jiri Slaby <jirislaby@xxxxxxxxxx>
> Cc: Rob Herring <robh@xxxxxxxxxx>; Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>;
> Conor Dooley <conor+dt@xxxxxxxxxx>; Catalin Marinas
> <catalin.marinas@xxxxxxx>; Will Deacon <will@xxxxxxxxxx>;
> linux-serial@xxxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx;
> devicetree@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH 0/3] tty: serial: Add Cortina-Access UART driver and
> platform support
> 
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> On Wed, Jun 10, 2026, at 13:28, Jason Li wrote:
> > This series adds Linux kernel support for the UART controller
> > integrated in Cortina-Access SoCs, with CA8289 (Venus) as the first supported
> device.
> 
> Hi Jason,
> 
> Thanks a lot for your submission!
> 
> I'm glad to see Cortina Access is getting back to upstreaming this support, I see
> that you first tries this in 2021 but didn't get very far at the time. The last
> submission was v4, so it would make sense to cound this one as v5 and
> continue with v6 next time.
> 
> You have already received a number of comments, so I'll skip looking at the
> details for the moment and let you work through them.
> 
> Regarding how to split up the patch series between uart and soc, I think
> sending them together during the review phase as you do here makes sense,
> but as they are loosely coupled, I think we will likely merge them separately.
> For simplicity, I would then just put the MAINTAINERS entry and the bindings
> for the vendor and board into the series for the soc tree.
> 
> It would also help me if you could add some more context about the SoC into
> the patch description for the patch that adds the arm64 platform, in particular:
> 
>  - is this the only one you are planning to upstream at this
>    point, or do you already have plans for other SoCs in this
>    family?
> 
>  - do you expect to see full support for actual end-user
>    products using these chips?
> 
>  - is there any shared lineage with the cortina-systems
>    (storlink/storm, now marvell) gemini 32-bit chips that we
>    already support, or with any of the Realtek SoCs that
>    are also being upstreamed now?
> 
>        Arnd