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Wed, 30 Sep 2026 07:37:49 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AAFgH-j8k6Zg Date: Wed, 30 Sep 2026 13:36:32 +0200 From: "Arnd Bergmann" To: "Linus Walleij" , "Fil Dunsky" Cc: "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, "Jason Li" Message-Id: In-Reply-To: References: <20260930-b4-cs75xx-v1-0-4617c4463529@gmail.com> <20260930-b4-cs75xx-v1-4-4617c4463529@gmail.com> <65c87e07-1722-44c2-9a08-ed9e18902058@kernel.org> <179076583795.3054628.14443934429806440798@gmail.com> Subject: Re: [PATCH RFC 04/10] ARM: cortina: Add support for the CS75xx SoC family Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On Wed, Sep 30, 2026, at 13:01, Linus Walleij wrote: > On Wed, Sep 30, 2026 at 12:57=E2=80=AFPM Fil Dunsky wrote: >> On 30/09/2026 12:20, Krzysztof Kozlowski wrote: > >> > How is it different from Cortina Gemini? >> >> Apart from the vendor, they have little in common. Gemini (SL3516/ >> CS3516) is a single ARMv4 FA526 with Faraday peripherals (FTINTC010, >> FTTMR010, FTGPIO010, a 16550 UART) and builds for ARCH_MULTI_V4. The >> CS75xx ("Goldengate G2") is an ARMv7 dual Cortex-A9 MPCore with GIC, >> SCU, TWD/global timer and a PL310, and its UART, GPIO, interrupt >> controller and NAND controller are different blocks from the Gemini >> ones. So it cannot share mach-gemini or its drivers. https://wikidevi.wi-cat.ru/Cortina explains a little more about the timeline here. As far as I can tell, both the Storlink/Storm Gemini SL351x/CS351x and the original Cortina Systems CS75xx ended up in Cortina Access when Realtek bought that business unit in 2015, but got discontinued in the meantime: https://web.archive.org/web/20150729020021/http://www.cortina-access.com= /dhp The rest of what was Cortina Systems at the time remained up in Inphy and later in Marvell, who I assume hold the naming rights. >> >> +machine-$(CONFIG_ARCH_CORTINA_CS75XX) +=3D cortina >> > >> > Arch should be rather per entire family, not one SoC. >> >> CS75xx is meant as the family (the vendor kernel covers the CS7522 and >> CS7542 with one ARCH_GOLDENGATE), but I see the name reads like a >> single part. Following Linus' suggestion of mach-goldengate, v2 will >> use ARCH_GOLDENGATE and arch/arm/mach-goldengate for the whole family. > > Put the rationale into the commit message, that's exactly what we want= to > see in there. How about making this one ARCH_CORTINA_ACCESS to match the 64-bit port (saturn, venus) that Jason posted at https://lore.kernel.org/linux-arm-kernel/20260610112821.3030099-5-jason.= li@cortina-access.com/ I think this would be consistent with how we deal with other acquisitions (storm->cortina, freescale->nxp, ...). I would leave Gemini as-is because changing the name only causes problems, but for the new platform I would use the current name of the company that last sold them. =20 Arnd