From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Francois Moine Subject: Re: [PATCH] ARM: dts: mvebu: add ethernet to the cm-a510 board Date: Fri, 6 Feb 2015 08:58:55 +0100 Message-ID: <20150206085855.7b8d494b@armhf> References: <54CB5267.5060004@gmail.com> <20150130113118.5523ed68@armhf> <54CB6440.1010002@gmail.com> <20150130124144.501cf81d@armhf> <54CB732F.7010409@gmail.com> <20150130133913.083d1ade@armhf> <54CB7E33.3080909@gmail.com> <54CE354F.5090106@gmail.com> <54D3EB26.9020909@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <54D3EB26.9020909-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Sebastian Hesselbarth Cc: Gabriel Dobato , Rob Herring , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Russell King - ARM Linux , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, Jason Cooper , Andrew Lunn , Gregory Clement List-Id: devicetree@vger.kernel.org On Thu, 05 Feb 2015 23:13:58 +0100 Sebastian Hesselbarth wrote: > > At this moment, I am trying to configure the framebuffer, but as Mo= ine > > told me,it seems there is not video driver support for this board i= n > > DT... :( . =20 >=20 > Not quite true. Video is made up of at least 4 different devices: > Framebuffer, GPU, Decode engine, and usually DVI/HDMI transmitter or > VGA. >=20 > We do have a driver for the framebuffer (armada_drm) and there is gre= at > work from Russell King and others on the GPU and Decode engine (IIRC)= =2E Yes, but it has no DT support. Mine has. > If you are using the sb-a510, I can see from the manual, that DVI > transmitter is SIL164.. AFAIS there is a driver for it, that maybe > needs some polishing. Nobody ever tested VGA, but it shouldn't be too > hard to add support for it as it is directly supported by the > framebuffer HW. This asks for some VGA encoder/connector module. Actually, as Gabriel told me that his screen is directly connected to the RGB LCD output, I wrote a simple panel for him. This module just gets the display timings from the DT. > One quite important driver at least for Dove is a clock source for > video. Internal clock generators for video are way to limited with > respect to frequencies to allow any useful resolution. =46rom my previous tests with the si5351 in the Cubox, most video modes should work without external clocks. > I'll see if I can have a look at the dts stuff this weekend.. that > way we'll have at least the basic done before moving to the other > devices. --=20 Ken ar c'henta=C3=B1 | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html