[PATCH RFC 07/10] tty: serial: Add Cortina Systems CS75xx UART driver

[Jason Li]

> -----Original Message-----
> From: Fil Dunsky <filipp.dunsky at gmail.com>
> Sent: Thursday, October 1, 2026 2:29 PM
> To: Arnd Bergmann <arnd at arndb.de>
> Cc: Jason Li <jason.li at cortina-access.com>; Linus Walleij <linusw at kernel.org>;
> Krzysztof Kozlowski <krzk at kernel.org>; Rob Herring <robh at kernel.org>;
> Krzysztof Kozlowski <krzk+dt at kernel.org>; Conor Dooley
> <conor+dt at kernel.org>; Greg Kroah-Hartman <gregkh at linuxfoundation.org>;
> Jiri Slaby <jirislaby at kernel.org>; Russell King <linux at armlinux.org.uk>;
> Alexandre Belloni <alexandre.belloni at bootlin.com>; Drew Fustini
> <fustini at kernel.org>; Lorenzo Pieralisi <lpieralisi at kernel.org>;
> linux-arm-kernel at lists.infradead.org; devicetree at vger.kernel.org;
> linux-kernel at vger.kernel.org; linux-serial at vger.kernel.org
> Subject: Re: [PATCH RFC 07/10] tty: serial: Add Cortina Systems CS75xx UART
> driver
> 
> External mail :
> This email originated from outside the organization. Do not reply, click links, or
> open attachments unless you recognize the sender and know the content is
> safe.
> 
> On Thu, Oct 01, 2026 at 08:18:56AM +0200, Arnd Bergmann wrote:
> > No objections from me either way, but I don't quite understand what
> > that will mean for the older parts that that are still sold by Cortina
> > Access: cs8032, cs8022 and cs8124. If someone later adds DT support
> > for those, would we use 'cortina,cs8032' or 'cortina-access,cs8032'?
> 
> I would go by the part number, the way fsl/nxp is handled: the parts that came
> out of Cortina Systems with a CSxxxx number keep "cortina", so
> "cortina,cs8032", and the CAxxxx parts that Cortina Access designed use
> "cortina-access". That gives a rule a later submitter can apply without knowing
> who sells the chip today.
> 
> Jason, if Cortina Access would rather see its current CS80xx/CS81xx parts
> under "cortina-access", now would be the time to say so; I have no stake in
> those and only need a rule for the CS75xx.
> 
> Thanks,
> Fil

Hi Fil/Arnd,
Cortina-Access Cortina-Access’s primary product offerings are PON and L3 gateway solutions.
At that time, Cortina Systems’ primary products focused on high-speed SERDES/PHY.
And we are no longer involved in the support of any CSxxxx-related products.
I'll recommend "cortina-access,caxxxx" for all Cortina-access's product.

Thanks,
Jason