linux-kernel - Re: [PATCH RFC 2/2] arm64: allwinner: a64: Add Brava Keller initial support

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Message-ID: <CAOFm3uExmg6mDAn-r_VHGJvuH_e1sComxYDbi+ksvjhJY2h8dg@mail.gmail.com>
Date:   Wed, 6 Dec 2017 21:39:51 +0100
From:   Philippe Ombredanne <pombredanne@...b.com>
To:     Rob Herring <robh@...nel.org>
Cc:     Jagan Teki <jagannadh.teki@...il.com>,
        Maxime Ripard <maxime.ripard@...e-electrons.com>,
        Chen-Yu Tsai <wens@...e.org>, Icenowy Zheng <icenowy@...c.io>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Mark Janoff <mark@...vahome.com>,
        Stuart Westerman <stu@...vahome.com>,
        linux-sunxi@...glegroups.com,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: Re: [PATCH RFC 2/2] arm64: allwinner: a64: Add Brava Keller initial support

On Mon, Dec 4, 2017 at 10:35 PM, Rob Herring <robh@...nel.org> wrote:
> On Thu, Nov 30, 2017 at 10:36:55PM +0100, Philippe Ombredanne wrote:
>> Jagan,
>>
>> On Thu, Nov 30, 2017 at 7:42 PM, Jagan Teki <jagannadh.teki@...il.com> wrote:
>> []
>> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts
>> > new file mode 100644
>> > index 0000000..f5303a3
>> > --- /dev/null
>> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-brava-keller.dts
>> > @@ -0,0 +1,244 @@
>> > +/*
>> > + * Copyright (C) 2017 Jagan Teki <jagan@...rulasolutions.com>
>> > + *
>> > + * This file is dual-licensed: you can use it either under the terms
>> > + * of the GPL or the X11 license, at your option. Note that this dual
>> > + * licensing only applies to this file, and not this project as a
>> > + * whole.
>> > + *
>> > + *  a) This library is free software; you can redistribute it and/or
>> > + *     modify it under the terms of the GNU General Public License as
>> > + *     published by the Free Software Foundation; either version 2 of the
>> > + *     License, or (at your option) any later version.
>> > + *
>> > + *     This library is distributed in the hope that it will be useful,
>> > + *     but WITHOUT ANY WARRANTY; without even the implied warranty of
>> > + *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
>> > + *     GNU General Public License for more details.
>> > + *
>> > + * Or, alternatively,
>> > + *
>> > + *  b) Permission is hereby granted, free of charge, to any person
>> > + *     obtaining a copy of this software and associated documentation
>> > + *     files (the "Software"), to deal in the Software without
>> > + *     restriction, including without limitation the rights to use,
>> > + *     copy, modify, merge, publish, distribute, sublicense, and/or
>> > + *     sell copies of the Software, and to permit persons to whom the
>> > + *     Software is furnished to do so, subject to the following
>> > + *     conditions:
>> > + *
>> > + *     The above copyright notice and this permission notice shall be
>> > + *     included in all copies or substantial portions of the Software.
>> > + *
>> > + *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>> > + *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
>> > + *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>> > + *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
>> > + *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
>> > + *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
>> > + *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
>> > + *     OTHER DEALINGS IN THE SOFTWARE.
>> > + */
>>
>> Rather than this long boilerplate, you might want to use the SPDX ids,
>> as started by Greg and documented by Thomas.
>> Noe that Linus wants the // comment style for the license line, and
>> since there is only two line left here I suggest using it for both
>> lines.
>> You can check also the recent doc patch posted by Thomas (tglx) and
>> comments from Linus and Greg.
>>
>> So I guess you could use this:
>>
>> > +// Copyright (C) 2017 Jagan Teki <jagan@...rulasolutions.com>
>> > +// SPDX-License-Indentifier: (GPL-2.0+ OR MIT)
>
> Other way around. Make SPDX-License-Indentifier the first line.

My bad. 100% right!

>> NB: what you call X11 is has the MIT license id in the SPDX license list.
>
> Right. That was a common mistake or abiguity in the dts files.
>
>> So you could replace 32 lines by only two lines :) it'[s neat right?
>>
>> And this would also help as we have tagged already ~15K files, so it
>> would help to use this for new files so the amount of cleanup work
>> still left does not increase. Thank you for your kind consideration!
>
> I've been nuging folks to do that for a while now. Of course, now we
> need to go move the ids to the first line at some point.

That's great: if you need some help there I have a tool that can help
detect license and eventually inject a proper SPDX id [1]

btw Thomas (tglx) posted a new patch set with the updated documentation.

[1] https://github.com/nexB/scancode-toolkit/tree/833-espedexify
-- 
Cordially
Philippe Ombredanne