linux-kernel - Re: [RFC][PATCH 2/2] drm/arm: Add support for Mali Display Processors

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Message-ID: <20160412193128.GO2510@phenom.ffwll.local>
Date:	Tue, 12 Apr 2016 21:31:28 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Liviu Dudau <Liviu.Dudau@....com>
Cc:	Dave Airlie <airlied@...il.com>,
	Daniel Stone <daniel@...ishbar.org>,
	David Brown <David.Brown@....com>,
	Brian Starkey <Brian.Starkey@....com>,
	devicetree@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	DRI devel <dri-devel@...ts.freedesktop.org>
Subject: Re: [RFC][PATCH 2/2] drm/arm: Add support for Mali Display Processors

On Tue, Apr 12, 2016 at 06:16:54PM +0100, Liviu Dudau wrote:
> On Tue, Apr 12, 2016 at 05:58:11PM +0200, Daniel Vetter wrote:
> > On Fri, Apr 01, 2016 at 05:21:52PM +0100, Liviu Dudau wrote:
> > > Add support for the new family of Display Processors from ARM Ltd.
> > > This commit adds basic support for Mali DP500, DP550 and DP650
> > > parts, with only the display engine being supported at the moment.
> > > 
> > > Cc: David Brown <David.Brown@....com>
> > > Cc: Brian Starkey <Brian.Starkey@....com>
> > > 
> > > Signed-off-by: Liviu Dudau <Liviu.Dudau@....com>
> > 
> > Ok, on 2nd look something puzzling: Where are the
> > drm_encoder/drm_connectors in this driver? Somehow I think just these
> > parts here won't light up a lot ...
> 
> The magic of component based drivers, heh :)
> 
> On my test system I'm using the NXP TDA19988 HDMI and the driver works
> out of box once the DT describes the proper port/endpoint dance. For
> models/qemu style environment I have a generic DRM encoder driver that I'm
> going to post for review that only reads display timings from DT and behaves
> as if it connected to a real monitor.

I didn't know that magic worked so well already. Seriously impressed, and
happy that it doesn't take anything in addition to make it all just work.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch