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AJvYcCXvS9s0fQ+uYY1mXhi2qwqBF/33Em8uhQL5tay40n6J+Eqz4Bcl/OdzSNVvbAcMGZRiVSeRZTPr1ZD7PR2ndP/zuN6jGL+gRLsd8A== X-Gm-Message-State: AOJu0YyOMJfjeUp1cNAOQA617qUbmwRMbdKnwciQzI8LwHi+Gu4V/jkk 2fthPQI/GBmIG7UKCgxgX255MAnVEqjmdGaR7vmCM6ITlnSniuGJaMEVuAoB0HM= X-Google-Smtp-Source: AGHT+IHDr81vF3zRaP+wqZ0e/t3Npy7uy0+VIJt9rq33DGzEfErerpHR1e93tPmTzcCcl0IZq6Sihg== X-Received: by 2002:a19:3847:0:b0:513:d5bb:3017 with SMTP id d7-20020a193847000000b00513d5bb3017mr1358675lfj.36.1711618912288; Thu, 28 Mar 2024 02:41:52 -0700 (PDT) Received: from [192.168.1.20] ([178.197.219.148]) by smtp.gmail.com with ESMTPSA id g8-20020a05600c310800b0041488cfd0fesm4857970wmo.28.2024.03.28.02.41.50 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Mar 2024 02:41:51 -0700 (PDT) Message-ID: <68fd00b8-d6f1-463b-9d0d-b77bf9364f7f@linaro.org> Date: Thu, 28 Mar 2024 10:41:50 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: arm64: marvell: add solidrun cn9130 clearfog boards To: Josua Mayer , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Yazan Shhady , "linux-arm-kernel@lists.infradead.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <20240321-cn9130-som-v1-0-711127a409ae@solid-run.com> <20240321-cn9130-som-v1-1-711127a409ae@solid-run.com> <0f7ca0ed-a1c1-41d2-a1fa-27431d14c056@solid-run.com> <6a6e7c4d-d5fd-42ae-bc3d-a3978d65e8e4@solid-run.com> <6af08a38-5239-4f5f-9e87-108e3400a6e6@solid-run.com> <62242f04-c18d-4da0-bd40-1be26886e41a@linaro.org> <1153cdd4-ed86-4a1f-ae4d-d9da1161f763@solid-run.com> <539eaf79-cff5-4bb7-84c8-7c9943c6d8ae@linaro.org> <5ea0feb4-4d7e-4a10-9254-b034e368e8ad@solid-run.com> Content-Language: en-US From: Krzysztof Kozlowski Autocrypt: addr=krzysztof.kozlowski@linaro.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 28/03/2024 10:33, Josua Mayer wrote: >> >>> 2. 88F8215, SouthBridge Communication Processor, System on Chip >>> (only usable in combination with a CN9130) >>> >>> Now, in terms of compatible string, what happens when a board >>> has multiples of these? >> Multiple of CN9130? 2x CN9130? > this specifically is an academic question, > the main point is multiple southbridges to one CN9130. I did not know to what you refer. >> >> You should know what is this about and come >> with explanation to the community. > If I was to come up with something new, without looking at existing > Documentation/devicetree/bindings/arm/marvell/armada-7k-8k.yaml > I would describe the hardware like this: > > SolidRun "CN9131" SolidWAN board is comptible with: > - solidrun,cn9131-solidwan: >   name of the carrier board, and name of the complete product >   includes one southbridge chip, but I don't need to mention it? > - solidrun,cn9130-sr-som: >   just the som, including 1x CN9130 SoC > - marvell,cn9130: >   this is the SoC, internally combining AP+CP >   AP *could* be mentioned, but I don't see a reason With an explanation in commit msg about not using other compatible fallbacks, this looks good to me. > >> Your platform maintainers should know what is this about and come >> with explanation to the community. > Is there a way forward? > Would it be worth challenging the existing bindings by proposing (RFC) > specific changes in line with what I described above? It all depends on "what" and "why" you want to do. I don't know. Best regards, Krzysztof