linux-kernel - Re: [PATCH v2 05/10] pwm: ntxec: Add driver for PWM function in Netronix EC

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Date:   Thu, 10 Sep 2020 21:13:47 +0200
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Sam Ravnborg <sam@...nborg.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>,
        Stephan Gerhold <stephan@...hold.net>,
        Lubomir Rintel <lkundrak@...sk>,
        Mark Brown <broonie@...nel.org>, allen <allen.chen@....com.tw>,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Josua Mayer <josua.mayer@....eu>,
        Andreas Kemnade <andreas@...nade.info>,
        Arnd Bergmann <arnd@...db.de>, Daniel Palmer <daniel@...f.com>
Subject: Re: [PATCH v2 05/10] pwm: ntxec: Add driver for PWM function in
 Netronix EC

On Tue, Sep 08, 2020 at 10:35:38AM +0100, Lee Jones wrote:
> On Tue, 08 Sep 2020, Andy Shevchenko wrote:
> 
> > On Tue, Sep 8, 2020 at 11:14 AM Lee Jones <lee.jones@...aro.org> wrote:
> > > On Sat, 05 Sep 2020, Andy Shevchenko wrote:
> > > > On Saturday, September 5, 2020, Jonathan Neuschäfer <j.neuschaefer@....net>
[...]
> > > > > +       depends on MFD_NTXEC && OF
> > > >
> > > >
> > > > I don’t see need to reduce test coverage and use of the driver by sticking
> > > > with OF. Actually it’s not used.
> > >
> > > If the device is only known to boot with OF, then it's pointless
> > > building it when !OF.
> > 
> > No, it's not. As I pointed out the (compilation) test coverage is better.
> 
> No, it's a waste of disk space.
> 
> Why would you knowingly compile something you know you can't use?
> 
> That's the whole point of COMPILE_TEST.
> 
> Note that when you want real coverage and you use `allyesconfig`
> and/or `allmodconfig` then CONFIG_OF is also enabled on platforms
> which support it.
> 
> > > If you want to increase test coverage enable
> > > COMPILE_TEST instead.
> > 
> > It is one way to achieve that, yes;
> > 
> >        depends on OF || COMPILE_TEST
> >        depends on MFD_NTXEC
> 
> This is better.

Ok, I'll go with this variant.


Thanks

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