linux-kernel - Re: [PATCH v3 2/3] ARM: dts: add Netronix E60K02 board common file

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Message-ID: <20191011170147.1b3c4b25@kemnade.info>
Date:   Fri, 11 Oct 2019 17:05:53 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     Rob Herring <robh@...nel.org>
Cc:     Marco Felsch <m.felsch@...gutronix.de>, mark.rutland@....com,
        shawnguo@...nel.org, s.hauer@...gutronix.de, kernel@...gutronix.de,
        festevam@...il.com, linux-imx@....com,
        manivannan.sadhasivam@...aro.org, andrew.smirnov@...il.com,
        marex@...x.de, angus@...ea.ca, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        j.neuschaefer@....net,
        Discussions about the Letux Kernel 
        <letux-kernel@...nphoenux.org>
Subject: Re: [PATCH v3 2/3] ARM: dts: add Netronix E60K02 board common file

On Fri, 11 Oct 2019 09:29:27 -0500
Rob Herring <robh@...nel.org> wrote:

> On Fri, Oct 11, 2019 at 09:41:48AM +0200, Andreas Kemnade wrote:
> > On Fri, 11 Oct 2019 08:56:09 +0200
> > Marco Felsch <m.felsch@...gutronix.de> wrote:
> >   
> > > Hi Andreas,
> > > 
> > > On 19-10-10 21:23, Andreas Kemnade wrote:  
> > > > The Netronix board E60K02 can be found some several Ebook-Readers,
> > > > at least the Kobo Clara HD and the Tolino Shine 3. The board
> > > > is equipped with different SoCs requiring different pinmuxes.
> > > > 
> > > > For now the following peripherals are included:
> > > > - LED
> > > > - Power Key
> > > > - Cover (gpio via hall sensor)
> > > > - RC5T619 PMIC (the kernel misses support for rtc and charger
> > > >   subdevices).
> > > > - Backlight via lm3630a
> > > > - Wifi sdio chip detection (mmc-powerseq and stuff)
> > > > 
> > > > It is based on vendor kernel but heavily reworked due to many
> > > > changed bindings.
> > > > 
> > > > Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> > > > ---
> > > > Changes in v3:
> > > > - better led name
> > > > - correct memory size
> > > > - comments about missing devices
> > > > 
> > > > Changes in v2:
> > > > - reordered, was 1/3
> > > > - moved pinmuxes to their actual users, not the parents
> > > >   of them
> > > > - removed some already-disabled stuff
> > > > - minor cleanups    
> > > 
> > > You won't change the muxing, so a this dtsi can be self contained?
> > >   
> > So you want me to put a big 
> > #if defined(MX6SLL)   
> 
> Not sure what the comment meant, but no, don't do this. C defines in dts 
> files are for symbolic names for numbers and assembling bitfields and 
> that's it.

yes, that is also my opinion. For now, there is only one user
of this .dtsi, but I have another one in preparation. That is the
reason for splitting things between .dts and .dtsi to avoid such ugly
ifdefs

Regards,
Andreas

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