From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 24E37371CF8; Sat, 28 Mar 2026 12:19:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774700360; cv=none; b=BNMxnOBH/SPIDjcZdAHGj66epx13jM8GvAxc82q/Ar0d900gEyCzKzI0PpS3iyhzqVlPRV9hes43nLP734H3aklQopIXARx0QJ4gotA1IO4bB/c76p0HD2as5+vJkSNmldrwS3d9MJmwy4YMYzK3KynLW6eu1whSat50/ASmVrU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774700360; c=relaxed/simple; bh=l8PzdOc2SiJp/F8zuhhdYG5SfUVQ0zwugQQ6DSe52nI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tfmBl7PJtdNKf/hnVu9xroYmrv46WFqwe7sH9qakSv/mJ2ooebjKm7ALynsecDmaDJ+6rVBk8r+xUs8dPaPeu/w3jJSYnVBSryfXbj4mhhhZA+e+xoiLriLyvDaF9QUA4LSBnCFfAUzKXsggn00o5LWchUlLboXTD7C4vPL1Mso= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=l9WnTOJt; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="l9WnTOJt" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2DAACC4CEF7; Sat, 28 Mar 2026 12:19:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774700359; bh=l8PzdOc2SiJp/F8zuhhdYG5SfUVQ0zwugQQ6DSe52nI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=l9WnTOJttj/IU9I9W8rlkRxwoMFOJ7DbkDrJACcaoxdsZ7ikx8F7cf2BGC6E3cbUM JmbjVooXlV3gTcy2z38BAaFKDX0EcUxpGezNyevLoCNz1yewktA5VC4aDmFUzPUbe0 9lY5+ElUbcYiR8FUvfsqbHp4lOPtolnLdvHp3vDubZkMXmosfIKdsz5wGhC5dRasCC DlWUNBOPmrt0K4zHENJoUq4tK5mMvBxZb0V7kxNWWLRn1gpIVpoyjfx5GkX0pCi8Qw HkLpEED2kAwWlQA9631zOn7AwvBEXWnDN3w2SPXh3rl8RsjKy0JB3bGikZDFJpbAO4 SVWhHIQcNpV7A== Message-ID: <9d9f96d2-2174-4493-8508-230168499df7@kernel.org> Date: Sat, 28 Mar 2026 13:19:15 +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 v2 3/3] memory: renesas-rpc-if: Add support for RZ/T2H SoC To: Prabhakar , Rob Herring , Conor Dooley , Geert Uytterhoeven , Magnus Damm , Biju Das , Wolfram Sang Cc: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Fabrizio Castro , Lad Prabhakar References: <20260327174245.3947213-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20260327174245.3947213-4-prabhakar.mahadev-lad.rj@bp.renesas.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 27/03/2026 18:42, Prabhakar wrote: > From: Lad Prabhakar > > Add support for the xSPI controller found on the Renesas RZ/T2H > (R9A09G077) SoC. > > The xSPI IP on RZ/T2H is closely related to the RZ/G3E variant, with > minor differences in some configuration register bits. As these > differences are not currently exercised by the driver, reuse the > existing implementation and regmap configuration. > > Signed-off-by: Lad Prabhakar > --- > v1->v2: > - Added xspi_info_r9a09g077 for RZ/T2H with type XSPI_RZ_T2H instead > of reusing xspi_info_r9a09g047 with type XSPI_RZ_G3E, to allow for > better differentiation in the future if needed. I see you tried to improve the description, but I have the same concerns. You added now bunch of dead code to mimic lack of compatibility, but it does not change the fact the code is 100% compatible in the meaning of DT. Let me repeat the question from v1: "Eventually provide extensive arguments in terms of how DT understands compatibility." And if you answer like Geert did last time: "differences are not handled yet" or "new features are not yet implemented" then you will get the same answer. Best regards, Krzysztof