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Thu, 27 Mar 2025 06:29:49 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface MIME-Version: 1.0 X-ThreadId: T24bcb56938053d3a Date: Thu, 27 Mar 2025 11:29:19 +0100 From: "Arnd Bergmann" To: "Peter Chen" Cc: "Krzysztof Kozlowski" , "Marc Zyngier" , soc@kernel.org, "Rob Herring" , krzk+dt@kernel.org, "Conor Dooley" , "Catalin Marinas" , "Will Deacon" , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, cix-kernel-upstream@cixtech.com, marcin@juszkiewicz.com.pl, kajetan.puchalski@arm.com, "Krzysztof Kozlowski" , "Fugang . duan" Message-Id: In-Reply-To: References: <20250324062420.360289-1-peter.chen@cixtech.com> <20250324062420.360289-6-peter.chen@cixtech.com> <865xjxmlgl.wl-maz@kernel.org> <861pukm9yd.wl-maz@kernel.org> <422deb4d-db29-48c1-b0c9-7915951df500@app.fastmail.com> Subject: Re: [PATCH v5 5/6] arm64: dts: cix: add initial CIX P1(SKY1) dts support Content-Type: text/plain Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250327_032953_179795_BF588774 X-CRM114-Status: GOOD ( 14.44 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Mar 27, 2025, at 10:31, Peter Chen wrote: > On 25-03-27 09:18:42, Arnd Bergmann wrote: >> Agreed. The usual arrangement for a new SoC family is to have >> the minimum set of drivers (uart, clk, pinctrl, regulator, >> iommu, irqchip) along with the DT bindings and the dts files >> in one branch and have that go through the SoC tree as part of >> the soc/newsoc branch. It sounds like in this case we only need >> uart and a mailbox since the rest are shared with existing >> firmware based drivers, so this isn't even the worst case >> but still requires some coordination between subsystem maintainers >> to ensure that all patches have been properly reviewed before >> I merge them. > > So, in this case, we should add mailbox driver support in this > series, and once the mailbox maintainer has reviewed mailbox > driver, all the patches could go your tree? Yes, exactly. Just make sure you describe this in the submission for the mailbox driver to make sure everyone understands the plan. I don't think we've had a mailbox driver as the critical path for a new platform before, so they would usually go through the mailbox subsystem tree. Arnd