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([2a02:810d:15c0:828:77d1:16a1:abe1:84fc]) by smtp.gmail.com with ESMTPSA id jy17-20020a170907763100b00969dc13d0b1sm10311892ejc.43.2023.05.16.03.08.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 May 2023 03:08:40 -0700 (PDT) Message-ID: Date: Tue, 16 May 2023 12:08:39 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.11.0 Subject: Re: [PATCH v1] Documentation/process: add soc maintainer handbook Content-Language: en-US To: Arnd Bergmann , "Conor.Dooley" Cc: Conor Dooley , soc@kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Olof Johansson , Palmer Dabbelt , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-riscv@lists.infradead.org References: <20230515-geometry-olympics-b0556ff8a5f7@spud> <20230516-grader-dejected-df65cdc584b3@wendy> From: Krzysztof Kozlowski In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On 16/05/2023 11:16, Arnd Bergmann wrote: > On Tue, May 16, 2023, at 10:57, Conor Dooley wrote: >> On Tue, May 16, 2023 at 10:31:19AM +0200, Krzysztof Kozlowski wrote: >>> On 15/05/2023 21:20, Conor Dooley wrote: >> >>>> + - Defer the devicetree changes to a release after the binding and driver have >>>> + already been merged >>>> + >>>> + - Change the bindings in a shared immutable branch that is used as the base for >>>> + both the driver change and the devicetree changes >>> >>> The policy told to me some time ago was that no merges from driver >>> branch or tree are allowed towards DTS branch, even if they come only >>> with binding header change. There are exceptions for this, e.g. [1], but >>> that would mean we need to express here rules for cross-tree merges. >> >> I've got away with having an immutable branch for dt-binding headers! >> That said, Arnd did actually have a look at this (and suggested some >> changes) before I sent it & did not cry fowl about this section. IIRC, >> this is actually his wording, not mine. > > Yes, I merge a lot of shared branches with dt-binding changes into the > soc/dt branch, and I wasn't aware of a policy against that, certainly did > not enforce it. Not as enforcement, but as your (or Olof's) preferred approach. See for example: https://lore.kernel.org/all/CAOesGMhfrWSvLtDtGRWBTJiAoeSwzGgsdUTm26j1mpoVu0ghDg@mail.gmail.com/ https://lore.kernel.org/all/CAOesGMi98hJnUYVLkgcbBpXsi-Xe6QPh-gtLaPWPO-EW+KcGuQ@mail.gmail.com/ I understand the "preferred approach" as part of discussions on the patches, when the entire patchset can still be re-arranged or changed. Not as strict policy applied on the actual git pull request from sub-arch maintainer. If we want to keep such recommendation, let's embed it into maintainer handbook, so we will not have to dig the emails. > > I generally object to changes touching drivers/* or anything else besides > arch/*/boot/dts, Documentation/devicetree/bindings/ and include/dt-bindings > in the dt branches, but I have made expections in the past when there > was a particular important reason. Best regards, Krzysztof