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[78.26.46.173]) by smtp.gmail.com with ESMTPSA id z20-20020a056512309400b0048a93325906sm1438931lfd.171.2022.07.27.06.00.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 27 Jul 2022 06:00:41 -0700 (PDT) Message-ID: <75e5ace3-3255-2302-65f5-9fbef9cb1147@linaro.org> Date: Wed, 27 Jul 2022 15:00:40 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for Renesas RZ/Five SoC and SMARC EVK Content-Language: en-US To: Biju Das , "Lad, Prabhakar" Cc: Prabhakar Mahadev Lad , Geert Uytterhoeven , Magnus Damm , Rob Herring , Krzysztof Kozlowski , Paul Walmsley , Palmer Dabbelt , Albert Ou , Anup Patel , Linux-Renesas , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , linux-riscv , LKML References: <20220726180623.1668-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20220726180623.1668-5-prabhakar.mahadev-lad.rj@bp.renesas.com> <636e9214-4b36-e9a6-3c6b-b6edb944335e@linaro.org> <9f32a4a9-66b4-ba2e-1713-436103c2faf8@linaro.org> <80f08089-e3bb-983e-313b-45613364829e@linaro.org> From: Krzysztof Kozlowski In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220727_060047_258312_7DA33C75 X-CRM114-Status: GOOD ( 14.66 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On 27/07/2022 14:56, Biju Das wrote: >> >> Then it is not the same SoC! Same means same, identical. CPU >> architecture is one of the major differences, which means it is not the >> same. > > Family SoC(R9A07G043) is at top level. Then it has different SoCId for taking care of > differences for SoC based on ARMV8 and RISC-V which has separate compatible like > r9a07g043u11 and r9a07g043f01? This does not answer the concern - it's not the same SoC. The most generic compatible denotes the most common part. I would argue that instruction set and architecture are the most important differences. None of ARMv8 SoCs (SoCs, not CPU cores) have "arm,armv8" compatible and you went even more - you combined two architectures in the most generic compatibles. > >> >>> Using same SoM and Carrier board? >> >> It's like saying PC with x86 and ARMv8 board are the same because they >> both use same "PC chassis". > > What I meant is board based on Family SoC(R9A07G043) that is either based on ARMv8 or > RISC-V cpu architecture. I don't see this related to the topic at all. What board do you use, does not matter. The board does not change the fact these SoCs have entirely different architecture - ARMv8 and RISC-V. Best regards, Krzysztof _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv