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Thu, 1 Oct 2026 02:19:16 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AxcX56erMFXV Date: Thu, 01 Oct 2026 08:18:56 +0200 From: "Arnd Bergmann" To: "Fil Dunsky" , "Jason Li" Cc: "Linus Walleij" , "Krzysztof Kozlowski" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Greg Kroah-Hartman" , "Jiri Slaby" , "Russell King" , "Alexandre Belloni" , "Drew Fustini" , "Lorenzo Pieralisi" , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "linux-serial@vger.kernel.org" Message-Id: <3ddf4b8e-14b7-442b-9d4f-5167875e3d64@app.fastmail.com> In-Reply-To: <179083239972.193541.4791387611943615705@gmail.com> References: <20260930-b4-cs75xx-v1-0-4617c4463529@gmail.com> <20260930-b4-cs75xx-v1-7-4617c4463529@gmail.com> <1d81c2ef-7a5b-4306-83d2-ff96b0eb6a06@app.fastmail.com> <179076749140.3134070.3869742286743401078@gmail.com> <179082517588.138645.14615134489246049313@gmail.com> <179083239972.193541.4791387611943615705@gmail.com> Subject: Re: [PATCH RFC 07/10] tty: serial: Add Cortina Systems CS75xx UART driver Content-Type: text/plain Content-Transfer-Encoding: 7bit On Thu, Oct 1, 2026, at 07:26, Fil Dunsky wrote: > On Thu, Oct 01, 2026 at 05:14:59AM +0000, Jason Li wrote: >> We agree with the approach of using a single UART driver since the >> CS75xx and CA series share the same UART hardware implementation. >> For the Device Tree compatible strings, we would prefer using the >> "cortina-access" vendor prefix for the CA SoCs (e.g. >> "cortina-access,-uart"). >> We do not have concerns with using a neutral driver name such as >> cortina-uart. However, for DT bindings and related documentation >> describing the CA devices, we would prefer the wording "Cortina >> Access" to distinguish them from the legacy Cortina/Marvell branded >> devices. > > - drivers/tty/serial/cortina-uart.c, SERIAL_CORTINA, > SERIAL_CORTINA_CONSOLE; > - the CS75xx parts keep the existing "cortina" prefix > ("cortina,cs7542-uart"), the CA parts get "cortina-access,-uart" > when they are added; > - the binding and the Kconfig help name both families, as "Cortina > Systems CS75xx" and "Cortina Access CAxxxx". > > Arnd, this also answers the prefix question from patch 4 for me: I > would leave the CS75xx compatibles and the dts directory on "cortina" > then, and use "cortina-access" only for the parts that Cortina Access > made. Please shout if you or the DT maintainers see it differently. 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'? Arnd