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Wed, 30 Sep 2026 03:57:20 -0700 (PDT) From: Fil Dunsky To: Krzysztof Kozlowski Cc: Arnd Bergmann , Linus Walleij , 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 Subject: Re: [PATCH RFC 04/10] ARM: cortina: Add support for the CS75xx SoC family In-Reply-To: <65c87e07-1722-44c2-9a08-ed9e18902058@kernel.org> References: <20260930-b4-cs75xx-v1-0-4617c4463529@gmail.com> <20260930-b4-cs75xx-v1-4-4617c4463529@gmail.com> <65c87e07-1722-44c2-9a08-ed9e18902058@kernel.org> Date: Wed, 30 Sep 2026 13:57:17 +0300 Message-ID: <179076583795.3054628.14443934429806440798@gmail.com> Content-Transfer-Encoding: 8bit Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8"; format="fixed" 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. >> +machine-$(CONFIG_ARCH_CORTINA_CS75XX) += 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. Thanks, Fil