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[93.93.131.118]) by smtp.gmail.com with ESMTPSA id b16sm55167860wrj.23.2020.01.21.09.19.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 21 Jan 2020 09:19:11 -0800 (PST) Received: from bsmtp by cheddar.halon.org.uk with local-bsmtp (Exim 4.89) (envelope-from ) id 1itxBG-0002ib-Nt; Tue, 21 Jan 2020 17:19:10 +0000 Received: from steve by tack.einval.org with local (Exim 4.92) (envelope-from ) id 1itxAl-0003E3-KQ; Tue, 21 Jan 2020 17:18:39 +0000 Date: Tue, 21 Jan 2020 17:18:39 +0000 From: Steve McIntyre To: Rob Herring Cc: David Gibson , Alexandre Torgue , Frank Rowand , Masahiro Yamada , Michal Marek , Simon Glass , devicetree@vger.kernel.org, "linux-kernel@vger.kernel.org" , Linux Kbuild mailing list , Devicetree Compiler Subject: Re: [RFC PATCH 1/3] dtc: Add dtb build information option Message-ID: <20200121171833.GG6796@tack.einval.com> References: <20200113181625.3130-1-alexandre.torgue@st.com> <20200113181625.3130-2-alexandre.torgue@st.com> <20200116005741.GB54439@umbus> <20200117090937.GU54439@umbus> <20200119063916.GD54439@umbus> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-attached: none User-Agent: Mutt/1.10.1 (2018-07-13) X-wibble: sender_address steve.mcintyre@linaro.org Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jan 21, 2020 at 09:59:44AM -0600, Rob Herring wrote: >On Sun, Jan 19, 2020 at 12:41 AM David Gibson > wrote: >> >> It's not really about who consumes it. It's about defining a >> namespace for the new property to exist in, since it's not part of a >> relevant standard (if we wanted to make it such, we should pin down >> what goes in there with much more precision). > >I can't think of any cases of the 'linux' prefix not being about who >consumes it. And we often end up dropping 'linux' because it turns out >to not be Linux specific. I don't care to see u-boot,build-info, >freebsd,build-info, etc. when a given dtb can only have 1 of those. Yes, exactly. What would happen if somebody (tried to) fill in more than one of XXXX.build-info? It makes no sense. >My intent is this property name is added to the DT spec, but I don't >agree we should define what's in it beyond a string. It is information >that is useful for humans identifying what the dtb was built from. Nod - defining this as a free-form string lets people put their own information in, without us having to try and agree on a full spec which we'll need to update as ideas change. -- Steve McIntyre steve.mcintyre@linaro.org Linaro.org | Open source software for ARM SoCs