linux-kernel - Re: [PATCH v3] docs: dt-bindings: add DTS Coding Style document

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Message-ID: <99190f51-59b5-4326-8c02-35529c280c2e@linaro.org>
Date:   Sat, 25 Nov 2023 23:24:50 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, Andrew Davis <afd@...com>,
        Andrew Lunn <andrew@...n.ch>, Arnd Bergmann <arnd@...db.de>,
        Bjorn Andersson <andersson@...nel.org>,
        Chen-Yu Tsai <wens@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Heiko Stuebner <heiko@...ech.de>,
        Jonathan Corbet <corbet@....net>,
        Michal Simek <michal.simek@....com>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Nishanth Menon <nm@...com>, Olof Johansson <olof@...om.net>,
        Rafał Miłecki <zajec5@...il.com>,
        linux-rockchip@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org,
        linux-amlogic@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
        workflows@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v3] docs: dt-bindings: add DTS Coding Style document

[...]
>> +
>> +3. Unit addresses shall use lowercase hex, without leading zeros (padding).
> 
> I'm curious, what's the reason for this ? I think it makes the sources
> less readable. If the rule is "just" because that's how DT sources are
> written today and it would be too complicated to change that, that's
> fine with me.
One more thing not mentioned is "no 0x prefix" (the unit address is *always*
interpreted as hex).

Lowercase hex seems to be (in my experience?) the consensus for everything
except preprocessor defines across the spectrum

No leading zeroes.. I guess it was just eye-pleasing for people that have
been doing devicetree to date, myself included.

Konrad