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From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Biju Das <biju.das.jz@bp.renesas.com>,
	"Lad, Prabhakar" <prabhakar.csengg@gmail.com>
Cc: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@bp.renesas.com>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>,
	Albert Ou <aou@eecs.berkeley.edu>,
	Anup Patel <anup@brainfault.org>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
	<devicetree@vger.kernel.org>,
	linux-riscv <linux-riscv@lists.infradead.org>,
	LKML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for Renesas RZ/Five SoC and SMARC EVK
Date: Wed, 27 Jul 2022 15:00:40 +0200	[thread overview]
Message-ID: <75e5ace3-3255-2302-65f5-9fbef9cb1147@linaro.org> (raw)
In-Reply-To: <OS0PR01MB5922FDF8CFFE44A611D3783886979@OS0PR01MB5922.jpnprd01.prod.outlook.com>

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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  reply	other threads:[~2022-07-27 13:01 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-07-26 18:06 [PATCH 0/6] Add support for Renesas RZ/Five SoC Lad Prabhakar
2022-07-26 18:06 ` [PATCH 1/6] dt-bindings: arm: renesas: Ignore the schema for RISC-V arch Lad Prabhakar
2022-07-27  8:50   ` Krzysztof Kozlowski
2022-07-27  8:55     ` Lad, Prabhakar
2022-07-27  8:53   ` Krzysztof Kozlowski
2022-07-27  9:00     ` Lad, Prabhakar
2022-07-27  9:31       ` Krzysztof Kozlowski
2022-07-27  9:48         ` Lad, Prabhakar
2022-08-11 15:26           ` Geert Uytterhoeven
2022-08-11 23:37             ` Lad, Prabhakar
2022-07-27 15:43   ` Rob Herring
2022-07-26 18:06 ` [PATCH 2/6] dt-bindings: riscv: Sort the CPU core list alphabetically Lad Prabhakar
2022-07-27  8:51   ` Krzysztof Kozlowski
2022-07-26 18:06 ` [PATCH 3/6] dt-bindings: riscv: Add Andes AX45MP core to the list Lad Prabhakar
2022-07-27  8:51   ` Krzysztof Kozlowski
2022-07-26 18:06 ` [PATCH 4/6] dt-bindings: riscv: Add DT binding documentation for Renesas RZ/Five SoC and SMARC EVK Lad Prabhakar
2022-07-27  8:54   ` Krzysztof Kozlowski
2022-07-27  9:05     ` Lad, Prabhakar
2022-07-27  9:27       ` Biju Das
2022-07-27  9:35         ` Lad, Prabhakar
2022-07-27  9:54       ` Krzysztof Kozlowski
2022-07-27 10:06         ` Lad, Prabhakar
2022-07-27 10:09           ` Krzysztof Kozlowski
2022-07-27 11:37             ` Lad, Prabhakar
2022-07-27 11:44               ` Krzysztof Kozlowski
2022-07-27 12:21                 ` Biju Das
2022-07-27 12:36                   ` Krzysztof Kozlowski
2022-07-27 12:56                     ` Biju Das
2022-07-27 13:00                       ` Krzysztof Kozlowski [this message]
2022-07-27 13:29                         ` Conor.Dooley
2022-07-27 15:32                           ` Lad, Prabhakar
2022-08-11 15:42                     ` Geert Uytterhoeven
2022-08-12  6:23                       ` Krzysztof Kozlowski
2022-08-12  9:49                         ` Lad, Prabhakar
2022-08-12 15:10                         ` Palmer Dabbelt
2022-07-26 18:06 ` [PATCH 5/6] RISC-V: Kconfig.socs: Add Renesas RZ/Five SoC kconfig option Lad Prabhakar
2022-07-26 18:49   ` Conor.Dooley
2022-07-27  8:19     ` Lad, Prabhakar
2022-07-26 18:06 ` [PATCH 6/6] riscv: dts: renesas: Add initial devicetree for Renesas RZ/Five SoC Lad Prabhakar
2022-07-26 18:25   ` Conor.Dooley
2022-07-26 18:53     ` Conor.Dooley
2022-07-27  8:09     ` Lad, Prabhakar
2022-07-27  8:21       ` Conor.Dooley
2022-07-27  8:30         ` Lad, Prabhakar
2022-07-27  8:55   ` Krzysztof Kozlowski
2022-07-27  9:08     ` Lad, Prabhakar
2022-07-26 18:51 ` [PATCH 0/6] Add support " Conor.Dooley
2022-07-27  8:00   ` Lad, Prabhakar

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