linux-kernel - Re: [PATCH] MIPS: ath79: support devicetree selection

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Date:   Wed, 6 Sep 2017 15:59:59 +0200
From:   Rocco Folino <rocco.folino@...il.com>
To:     Alban <albeu@...e.fr>
Cc:     Ralf Baechle <ralf@...ux-mips.org>, robh+dt@...nel.org,
        mark.rutland@....com, linux-mips@...ux-mips.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        Antony Pavlov <antonynpavlov@...il.com>,
        John Crispin <john@...ozen.org>
Subject: Re: [PATCH] MIPS: ath79: support devicetree selection

On Wed, Sep 06, 2017 at 03:35:43PM +0200, Alban wrote:
> On Wed, 6 Sep 2017 14:32:00 +0200
> Rocco Folino <rocco.folino@...il.com> wrote:
> 
> > On Wed, Sep 06, 2017 at 02:20:05PM +0200, Alban wrote:
> > > On Wed, 6 Sep 2017 13:14:35 +0200
> > > Ralf Baechle <ralf@...ux-mips.org> wrote:
> > >   
> > > > On Fri, Aug 18, 2017 at 05:32:42PM +0200, Rocco Folino wrote:
> > > >   
> > > > > Allow to choose devicetrees from Kconfig.
> > > > > 
> > > > > Signed-off-by: Rocco Folino <rocco.folino@...il.com>  
> > > 
> > > I don't really see the point of this patch. Building the dtb doesn't
> > > take any significant time, so why add this extra complexity?  
> > 
> > Because you need to select the SoC type in order to enable some
> > drivers, for example on the AR9331 to use the serial you need the
> > CONFIG_SERIAL_AR933X which depends on the CONFIG_SOC_AR933X.
> 
> Seeing as this driver is the only one that make use of CONFIG_SOC_AR933X
> I would prefer removing this dependency. It would also open the way to have
> the driver built in COMPILE_TEST. A few more fixes might be needed but that
> would be better than such a workaround.

Yes, I agree!

Thanks,

Rocco