From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Date: Fri, 28 Feb 2014 12:57:36 +0000
Subject: Re: [PATCH 0/9] Doc/DT: DT bindings for various display components
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To: Tomi Valkeinen <tomi.valkeinen-l0cyMroinI0@public.gmane.org>, linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Cc: Philipp Zabel <p.zabel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Laurent Pinchart <laurent.pinchart-ryLnwIuWjnjg/C1BVhZhaw@public.gmane.org>, Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>, Sascha Hauer <s.hauer-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>, Rob Clark <robdclark-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Inki Dae <inki.dae-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Andrzej Hajda <a.hajda-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>, Tomasz Figa <tomasz.figa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>

On 02/28/14 13:20, Tomi Valkeinen wrote:
> This series is a re-send of
> http://article.gmane.org/gmane.linux.drivers.devicetree/61739
>
...
> Shortly about the display components in the series, in the order of probable
> public interest:
>
> * Analog TV, DVI and HDMI Connectors represent a respective connector on the
>    board. They don't do much, but they do mark the end of the video pipeline (from
>    the board's pov), and they should also in the future offer ways to handle
>    things like the +5V pin on DVI and HDMI connector and HPD pin.
>
> * MIPI DPI panel and MIPI DSI CM panels represent bindings for simple panels
>    using the respective video bus.
>
> * Sony acx565akm is an SPI controlled panel using flatlink video bus.
>
> * TFP410 is a DPI to DVI encoder.
>
> * TPD12S015 is a HDMI companion chip, used on OMAP boards.

Tomi,

Out of curiosity, will there be DT nodes for pull-up resistors soon,
too? ;)

Honestly, TPD12S015 is a level shifter, there is nothing in it that
would justify a DT node nor a driver.

Above you already note, that connector nodes should offer HPD in the
future, but I guess the binding should represent that now already.
I will be a DT stub anyway, the corresponding video sink driver will
have to look it up.

Looking through the bindings for DVI and HDMI, I guess HPD gpio is
better kept in those nodes. From the relevant (DT) properties DVI and
HDMI connectors are in no way different.

Sebastian