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 5BCD23090E2 for ; Fri, 14 Nov 2025 10:25:41 +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=1763115941; cv=none; b=pZLOijPExz4CQJrUNR5OoMwK2Aqv6GdGS9hqdXj9kJBvHElgDatPXHw4kegkthVwjtO1WdoG5/j3hS5+KcmYlKFy9P067jsuO2DIqRNDknmbrPvaDZB4EOPeR6H5/sjrptYZerrGqt6YlFdEFaNratosrLHWu+MrDK6ogrhuL5I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763115941; c=relaxed/simple; bh=xbRr64+VOJ7bkaBbrPgTViWV02mxV4dUSmkkvIUgt0U=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=t/mZURBcs6SaPDA7Ybk1AFHSznc3PxqxrPReFUbog+9CDxJvXo4M53j0KReASOp9gy1R8s0T3/A4KzZ8VnQdNNv5nlArJqzc1skygbVixVmKEM5g/1V9LB/e8SJDS1/bYvzz3CWPUiHHw5ZFODMu+6egXTM/DDwL0LVNFqo7Atg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jHd0ZFH9; 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="jHd0ZFH9" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDAFBC4CEF1; Fri, 14 Nov 2025 10:25:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763115940; bh=xbRr64+VOJ7bkaBbrPgTViWV02mxV4dUSmkkvIUgt0U=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=jHd0ZFH97CRcs94oPE81IgtORCgWd/qGCUP9mZqPE3biFGP6+2jmSxQImwuRY1NPn ia5598L1xPPWX8MzShX/+SQPcSzrP8kj5csIYHvnle+XQjnYRSytrVx0sigKKqwP/1 Q0bdDjOWupv3JMUXqnON1psRHS2qKQNoGCl2tBVujoN9Acf72oZDd+5KfQraJWBr7q u+Zr4AGl9oKiquqWDc9aDl+6c1eBaZoGWSQZ6g7hgXGa2br11pwAwVszJck0p9jeZu qu2Fv9VGI+b0JpQPWfs67HlNe5J5Bplh9Tpk79cgcqqVw8whkKpALbqBHObswwK4aQ fAWghhMHJ+erg== Message-ID: <618422a5-9e74-47e9-a97c-641c47d13186@kernel.org> Date: Fri, 14 Nov 2025 11:25:37 +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] dt-bindings: vendor-prefixes: add kfr prefix To: Gilles BULOZ , Rob Herring Cc: devicetree@vger.kernel.org References: <13a2c25b-9633-c06c-0c07-95157a2a9c1e@kontron.com> <2e04869a-29f8-4c2e-bfe7-0a4b22369a8c@kernel.org> <3635333b-689f-215f-0127-5d24c2b7a71f@kontron.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 14/11/2025 11:19, Gilles BULOZ wrote: > Le 14/11/2025 à 10:32, Krzysztof Kozlowski a écrit : > >> On 14/11/2025 10:23, Gilles BULOZ wrote: >>> Le 14/11/2025 à 09:40, Krzysztof Kozlowski a écrit : >>> >>>> >>>> On 14/11/2025 08:53, Gilles BULOZ wrote: >>>>> Add kfr vendor prefix for Kontron France, which is a single-board >>>>> computer (SBC) manufacturer. >>>> There is no user for this. >>> Hi Krzysztof, >>> >>> Yes, there's no user for vendor "kfr" in kernel tree, but Kontron has >>> produced some ARM boards (VM6103,VX3106,VX6124,VX3124) on which we >>> ported uboot and added some entries in device tree for board specific >>> devices (CPLD) using vendor "kfr". We also provide a Linux BSP for these >>> boards with drivers using compatible = kfr,. >>> My patch was just to reserve this vendor officially so that no other >> You have entire commit msg to explain unusual things. Your commit msg >> must explain WHY you are doing it so we know WHY we would want to accept >> that patch. If you do not want to convince me why I want this patch >> then... I don't want that patch (please watch Greg's talk titled that way). > > Sorry, I had a look to the mailing list archive and did as another developer > did to have a vendor added to the list, but his patch also added new drivers > using this vendor, unlike mine. > > I also did not understand you answer "there is no user for this" but I > guessed, I hope right. > >> >> Anyway, you cannot "reserve" prefix. You must reference here the >> upstream user, if it is not obvious. > > With "upstream user", do you mean a driver in the official kernel tree ? > In this case there's none : we provide our drivers out-of-tree in a BSP package. Upstream user, or user in this context, is any upstream open-source project using these bindings or in-kernel DTS. out-of-tree forks are not upstream, thus does not count here, sorry. > >> >> Plus I am pretty sure Kontron already has prefix and there is no point >> for another one. How many companies Samsung has? 10? 20? How many prefixes? > > Yes there's already "Kontron S&T AG" but as Kontron France is making very > specific products, I thought this was possible to have a different vendor as > for ACPI/PNP ID registry where Kontron has four entries. Maybe this rule is > written somewhere but I was not aware and did not see device-tree vendors as > a rare resource. One prefix is just enough, there are no benefits usually of having more. Best regards, Krzysztof