Messages in this thread | | | Date | Wed, 27 Jul 2022 15:00:40 +0200 | Subject | Re: [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for Renesas RZ/Five SoC and SMARC EVK | From | Krzysztof Kozlowski <> |
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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
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