linux-kernel - Re: [PATCH v3 1/2] ARM: dts: da850-lcdk: add the dumb-vga-dac node

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Date:   Tue, 6 Dec 2016 16:06:40 +0100
From:   Bartosz Golaszewski <bgolaszewski@...libre.com>
To:     Sekhar Nori <nsekhar@...com>
Cc:     Tomi Valkeinen <tomi.valkeinen@...com>,
        Kevin Hilman <khilman@...libre.com>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Mark Rutland <mark.rutland@....com>,
        Peter Ujfalusi <peter.ujfalusi@...com>,
        Russell King <linux@...linux.org.uk>,
        LKML <linux-kernel@...r.kernel.org>,
        arm-soc <linux-arm-kernel@...ts.infradead.org>,
        linux-drm <dri-devel@...ts.freedesktop.org>,
        linux-devicetree <devicetree@...r.kernel.org>,
        Jyri Sarha <jsarha@...com>, David Airlie <airlied@...ux.ie>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>
Subject: Re: [PATCH v3 1/2] ARM: dts: da850-lcdk: add the dumb-vga-dac node

2016-12-06 16:03 GMT+01:00 Sekhar Nori <nsekhar@...com>:
> On Tuesday 06 December 2016 06:32 PM, Bartosz Golaszewski wrote:
>> 2016-12-05 13:49 GMT+01:00 Tomi Valkeinen <tomi.valkeinen@...com>:
>>> On 29/11/16 13:57, Bartosz Golaszewski wrote:
>>>> Add the dumb-vga-dac node to the board DT together with corresponding
>>>> ports and vga connector. This allows to retrieve the edid info from
>>>> the display automatically.
>>>>
>>>
>>> It's a bit difficult to follow this as there's been so many patches
>>> going around. But I take the above is the LCDC node in the base da850
>>> dtsi file? In that case, what is the display_in supposed to present?
>>> It's the first node in the "display chain", so it has no input.
>>>
>>> Also, don't touch da850.dtsi here, just add the "ports" node in the
>>> da850-lcdk.dts file.
>>>
>>> If the da850.dtsi has not been merged yet, I'd change the name of the
>>> lcdc node to something else than "display". It's rather vague. If it's
>>> named "lcdc", reading da850-lcdk.dts becomes much easier, as you'll
>>> refer to "lcdc".
>>>
>>
>> The node is already in Sekhar's branch.
>
> The node name should be 'display' as thats the ePAPR 1.1 generic name
> recommendation. The label is also set to 'display' though and that can
> be changed to lcdc.
>
> A pre-patch to fix that before we modify the node further is welcome.
>
> Thanks,
> Sekhar

I'll include this in v5 together with the change requested by Laurent.

Thanks,
Bartosz