linux-kernel - Re: [PATCH 1/2] ARM: dts: Add the support for display5 equipped with Mitsubishi (800x480) display

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Date:   Fri, 17 Nov 2017 15:13:34 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Shawn Guo <shawnguo@...nel.org>
Cc:     Rob Herring <robh@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Russell King <linux@...linux.org.uk>,
        Sascha Hauer <kernel@...gutronix.de>,
        Fabio Estevam <fabio.estevam@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/2] ARM: dts: Add the support for display5 equipped
 with Mitsubishi (800x480) display

Hi Shawn,

> On Fri, Nov 17, 2017 at 11:24:03AM +0100, Lukasz Majewski wrote:
> > This is the support for aa070mc01-ca1 Mitsubishi display.
> > 
> > Signed-off-by: Lukasz Majewski <lukma@...x.de>
> > ---
> >  arch/arm/boot/dts/Makefile                         |  1 +
> >  .../imx6q-display5-mitsubishi-aa070-800x480.dts    | 51
> > ++++++++++++++++++++++ 2 files changed, 52 insertions(+)
> >  create mode 100644
> > arch/arm/boot/dts/imx6q-display5-mitsubishi-aa070-800x480.dts
> > 
> > diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> > index d9d0c82e7d20..10b3ad078dea 100644
> > --- a/arch/arm/boot/dts/Makefile
> > +++ b/arch/arm/boot/dts/Makefile
> > @@ -407,6 +407,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
> >  	imx6q-cm-fx6.dtb \
> >  	imx6q-cubox-i.dtb \
> >  	imx6q-dfi-fs700-m60.dtb \
> > +	imx6q-display5-mitsubishi-aa070-800x480.dtb \
> >  	imx6q-display5-tianma-tm070-1280x768.dtb \
> >  	imx6q-dmo-edmqmx6.dtb \
> >  	imx6q-evi.dtb \  
> 
> <snip>
> 
> > +#include "imx6q-display5.dtsi"
> > +
> > +&panel {
> > +	compatible = "mitsubishi,aa070mc01-ca1";
> > +};  
> 
> How many DTB files do you want to add for this display5 board?  

This is a single board, which can support panels which I've posted.

Those dtbs I do pack to u-boot' FIT image and don't need to worry that
some display is not working (after setting bootloader env variable).

> It's
> obvious no fun to maintain a bunch of DTB files for all the panels
> this board can support.

Please note that those files excessively use #include directive, and
there is not so much code added (the longest part is license and
comments).

>  Let's stop right here.

If I may ask - how shall I proceed? What would be your suggestion to
move on (dtb overlays) ?


> 
> Shawn
> 
> > +
> > +&ldb {
> > +	lvds0: lvds-channel@0 {
> > +		fsl,data-mapping = "spwg";
> > +		fsl,data-width = <24>;
> > +	};
> > +};
> > -- 
> > 2.11.0
> >   



Best regards,

Lukasz Majewski

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