linux-kernel - Re: [PATCH v3 1/5] drivers: mfd: Add ADI MAX77541/MAX77540 PMIC Support

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Date:   Thu, 19 Jan 2023 10:06:27 -0500
From:   William Breathitt Gray <william.gray@...aro.org>
To:     Lee Jones <lee@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Okan Sahin <okan.sahin@...log.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jonathan Cameron <jic23@...nel.org>,
        Lars-Peter Clausen <lars@...afoo.de>,
        Caleb Connolly <caleb.connolly@...aro.org>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Ramona Bolboaca <ramona.bolboaca@...log.com>,
        ChiYuan Huang <cy_huang@...htek.com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org
Subject: Re: [PATCH v3 1/5] drivers: mfd: Add ADI MAX77541/MAX77540 PMIC
 Support

On Thu, Jan 19, 2023 at 02:27:29PM +0000, Lee Jones wrote:
> On Wed, 18 Jan 2023, Andy Shevchenko wrote:
> 
> > On Wed, Jan 18, 2023 at 09:38:08AM +0300, Okan Sahin wrote:
> > > MFD driver for MAX77541/MAX77540 to enable its sub
> > > devices.
> > > 
> > > The MAX77541 is a multi-function devices. It includes
> > > buck converter and ADC.
> > > 
> > > The MAX77540 is a high-efficiency buck converter
> > > with two 3A switching phases.
> > > 
> > > They have same regmap except for ADC part of MAX77541.
> > 
> > ...
> > 
> > > +/*
> > > + * Copyright (c) 2022 Analog Devices, Inc.
> > 
> > Happy New Year!
> 
> If the code hasn't changed greatly since the Copyright, there is no
> requirement to update the date.

Actually a date isn't necessary at all. In fact, by the Berne Convention
copyright protection exists the moment a work is completed, so you could
even argue a copyright notice is unnecessary and the SPDX line alone is
sufficient. However, I would say there is a practical benefit in a
copyright notice identifying the primary authors to make ownership
clear.

For the curious, this LF blog post gives some reasons about why
copyright notices may be better left simple:
https://www.linuxfoundation.org/blog/blog/copyright-notices-in-open-source-software-projects

William Breathitt Gray

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