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([2a02:810d:15c0:828:77d1:16a1:abe1:84fc]) by smtp.gmail.com with ESMTPSA id d19-20020a1709061f5300b009596e7e0dbasm10695764ejk.162.2023.05.16.03.25.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 16 May 2023 03:25:08 -0700 (PDT) Message-ID: <578a743e-dee4-59b7-2f4e-290b551211e0@linaro.org> Date: Tue, 16 May 2023 12:25:07 +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: [EXT] Re: [PATCH 1/2 v7] dt-bindings: watchdog: marvell GTI system watchdog driver Content-Language: en-US To: Sunil Kovvuri Goutham , Bharat Bhushan , "wim@linux-watchdog.org" , "linux@roeck-us.net" , "robh+dt@kernel.org" , "krzysztof.kozlowski+dt@linaro.org" , "linux-watchdog@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <20230508131515.19403-1-bbhushan2@marvell.com> <8119eec8-0190-b6a5-85a7-301bcb81b0c9@linaro.org> <8b540cc2-bc0d-9d8b-45e6-98410322b3f6@linaro.org> From: Krzysztof Kozlowski In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 16/05/2023 12:06, Sunil Kovvuri Goutham wrote: >>>>> Marvell have octeontx2 series of processor which have watchdog timer. >>>>> In 95xx,98xx,96xx are the processors in octeontx2 series of >>>>> processor. So >>>> octeontx2-95xx is on soc, octeontx2-96xx is another and so on. >>>> >>>> No, 95xx is not a processor. Otherwise please point me to exact >>>> product datasheet. Hint: I checked it. >>> >>> Looks like 95xx data sheet is not public, will remove in that case. >> >> We can talk about 96xx. Can you point me to the SoC named exactly like this? >> Hint: I checked it. > > To recap what Bharat mentioned before along with references to individual processors. > OcteonTx2 is a family of processors > https://www.marvell.com/products/data-processing-units.html > Please check for "OCTEON TX2 DPUs" > CN96xx and CN98xx are two silicon variants in this family. > https://www.marvell.com/content/dam/marvell/en/public-collateral/embedded-processors/marvell-infrastructure-processors-octeon-tx2-cn92xx-cn96xx-cn98xx-product-brief-2020-02.pdf This is a product brief which further suggests CN96xx is a family (or sub-family). "xx" is pretty often used as family, not as product. Otherwise how one product CN92XX can come with 12-18 cores *in the same time*? https://www.marvell.com/company/newsroom/marvell-announces-octeon-tx2-family-of-multi-core-infrastructure-processors.html "Marvell’s CN91xx, CN92xx, CN96xx, and CN98xx processor families include:" https://www.marvell.com/products/data-processing-units.html > And CNF95xx is another silicon variant in the same family. > https://www.marvell.com/content/dam/marvell/en/public-collateral/embedded-processors/marvell-infrastructure-processors-octeon-fusion-cnf95xx-product-brief.pdf Again, unspecific product brief. Your other briefs specify them clearer, e.g. CN9130, CN9131 > > Since the HW block is same in all the variants of silicons in this family, we would like to use a > generic string instead of different compatible string for each one. ie > - const: marvell,octeontx2-wdt > Hope this is okay. https://elixir.bootlin.com/linux/v6.1-rc1/source/Documentation/devicetree/bindings/writing-bindings.rst#L42 > > Same with CN10K or Octeon10 family of silicons. > https://www.marvell.com/products/data-processing-units.html > Please check for "OCTEON 10" > > CN103xx and CN106xx are two silicons in this family. Are they? "Up to 8" cores, so how this can be one specific silicon? One customer buys CN10300 with 8 cores, second buys exactly the same CN10300 and has 4 cores? You are mixing families and specific devices. Best regards, Krzysztof