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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id u73sm3668919oie.30.2021.02.08.09.58.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Feb 2021 09:58:48 -0800 (PST) Received: (nullmailer pid 1618899 invoked by uid 1000); Mon, 08 Feb 2021 17:58:47 -0000 Date: Mon, 8 Feb 2021 11:58:47 -0600 From: Rob Herring To: Hector Martin Subject: Re: [PATCH 18/18] arm64: apple: Add initial Mac Mini 2020 (M1) devicetree Message-ID: <20210208175847.GB1567700@robh.at.kernel.org> References: <20210204203951.52105-1-marcan@marcan.st> <20210204203951.52105-19-marcan@marcan.st> <20210208110441.25qc6yken4effd6c@kozik-lap> <20210208121325.owjjd7nfbdanszny@kozik-lap> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210208_175855_711435_B47441C0 X-CRM114-Status: GOOD ( 26.22 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Cc: Arnd Bergmann , DTML , Marc Zyngier , "linux-kernel@vger.kernel.org" , Krzysztof Kozlowski , SoC Team , Olof Johansson , Linux ARM Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Feb 08, 2021 at 11:12:52PM +0900, Hector Martin wrote: > On 08/02/2021 21.40, Arnd Bergmann wrote: > > On Mon, Feb 8, 2021 at 1:13 PM Krzysztof Kozlowski wrote: > > > > > > On Mon, Feb 08, 2021 at 08:56:53PM +0900, Hector Martin 'marcan' wrote: > > > > On 08/02/2021 20.04, Krzysztof Kozlowski wrote: > > > > > apple > > > > > > > > > > Don't make things different for this one platform (comparing to all > > > > > other platforms). Apple is not that special. :) > > > > > > > > AAPL is the old vendor prefix used in the PowerPC era. I'm happy to use > > > > `apple`, as long as we're OK with having two different prefixes for the same > > > > vendor, one for PPC and one for ARM64. I've seen opinions go both ways on > > > > this one :) > > > > > > Thanks for explanation. I propose to choose just "apple". Sticking to > > > old vendor name is not a requirement - we have few vendor prefixes which > > > were marked as deprecated because we switched to a better one. > > > > We've gone back and forth on this a few times already. My current > > preference would also be to go with "apple", not because it's somehow > > nicer or clearer but because it avoids the namespace conflict with > > what the Apple firmware uses: It's only AAPL,phandle and AAPL,unit-string (equivalent to unit-address) AFAICT which are really internal format details. So it's really 'apple' that could conflct, but I can't see that mattering. > Ack, I'll use 'apple' for v2. 3 votes for 'apple'. You all get to pick the color of this shed. > Amusingly, Apple actually use 'apple,firestorm' and 'apple,icestorm' for the > CPUs in their devicetrees for these machines, so those will end up identical > :) (they don't use apple-related prefixes for any other compatible strings > at all, it's a mess). But we don't care about what their ADTs (Apple DTs) do > in Linux anyway, the bootloader abstracts all that out and we'll be dealing > with mantaining proper DTs ourselves. > > > > Makes sense. In such case it's indeed your work. Since you introduce it, > > > the DTSes are usually licensed with (GPL-2.0+ OR MIT). > > > > Indeed, we do want other OSs to use our dts files, so the general > > preference is to have a permissive license, unless you have a strong > > reason yourself to require GPL-only. > > Thanks for pointing this out; this was actually unintentional. I based it > off of an old dts I'd written ages ago and forgot to revisit the license. I > even have it marked GPL-2.0+ in the copy in our bootloader repo, which is > otherwise supposed to be MIT for original code... I'll also highlight there's a DT only tree[1] available to import DT related parts to other projects. It's generated from the kernel tree. Probably an overkill to copying at this point though. Rob [1] https://git.kernel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel