From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 664D2606A31A for ; Tue, 27 Oct 2026 09:57:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=x1pCXQKt; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=NT1znik9 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; 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Tue, 27 Oct 2026 09:56:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793095012; bh=GP5oharGv0apk4U72jFVlwAbHHN87kFMPLSACqzLjUs=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=NT1znik9uR+3gc3Tt3ZFxzdRSRBStmc3sLNfoepUakyw+eIZeOE1KrHR+tVHWUxYt noAz+K62TqwcKkFrDmnLeeMiv3sKZtc19JKRLql6TM/QtA06HkHJhL3JM7aikHo/76 dcB1qRsVBsu24P7qgMKVEqJZFBpLEFp9k/rbhFqtxfraBT7OhZ3aXBwQmsqhc0qCl/ 2ck0cMkgJa6qxc/PPp2ctQfcHG7a+jBEm79C+T1dJPV/OJZIaZlLKViM/1WLTGHcWG StF0ItbyTTis5VD6Y7i1xChzfTMmo2Oig5gvA715s2a8tdrlLBUaI3y62ALm8LBZzj I+kzJhs3fATIQ== Message-ID: <7b993a3e-d2b4-417b-90a3-a41d1f454cda@kernel.org> Date: Tue, 27 Oct 2026 10:56:44 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] dt-bindings: arm: rockchip: Add ArmSoM Sige7s To: Jianfeng Liu Cc: HystericalDragons@proton.me, amadeus@jmu.edu.cn, conor+dt@kernel.org, devicetree@vger.kernel.org, heiko@sntech.de, hrushirajg23@gmail.com, krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, macromorgan@hotmail.com, michael.opdenacker@rootcommit.com, naoki@radxa.com, robh@kernel.org References: <20261027-angelic-caribou-of-wonder-02ccc8@quoll> <20261027085634.380872-1-liujianfeng1994@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-7.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 27/10/2026 09:56, Jianfeng Liu wrote: > Hi Krzysztof, > > On 2026-10-27 7:48 UTC, Krzysztof wrote: >> Maybe just install the DTB under new name if they are identical? > > Thanks for the suggestion. > > Installing the existing CoolPi 4B DTB under a different filename would > solve the DTB naming issue, but the model and compatible properties would > still identify the device as a CoolPi 4B. > > This is my main concern. Users running Linux on a Sige7s would still see > "RK3588S CoolPi 4 Model B" in /proc/device-tree/model, even though they > purchased an ArmSoM Sige7s. > > I agree that we should avoid duplicating the hardware description, since > the boards are identical. However, I think preserving the correct board > identity in the device tree is useful, especially for a product that is > still being manufactured and will receive ongoing upstream support. > > Would it be acceptable to share the entire hardware description while > keeping separate model and compatible properties for the two boards? Yes, just be sure to capture this in commit msg and maybe Sige7s DTS comments. Best regards, Krzysztof