From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: DSS2: How to test TV and LCD output simulatenously Date: Tue, 02 Jun 2009 14:57:08 +0300 Message-ID: <1243943829.24975.13.camel@tubuntu> References: <5F744A5A3C131242B81CE5874BD2CFFB34E35EAC@dlee01.ent.ti.com> <4A251260.7070800@mlbassoc.com> Reply-To: tomi.valkeinen@nokia.com Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.nokia.com ([192.100.122.233]:57838 "EHLO mgw-mx06.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750965AbZFBL5Y (ORCPT ); Tue, 2 Jun 2009 07:57:24 -0400 In-Reply-To: <4A251260.7070800@mlbassoc.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Gary Thomas Cc: "Venkatesh, Subbu" , "linux-omap@vger.kernel.org" , "Shah, Hardik" Hi, On Tue, 2009-06-02 at 13:52 +0200, ext Gary Thomas wrote: > Venkatesh, Subbu wrote: > > Hi, > > I have DSS2 ported on LDP board, I could manage to get output display on TV and LCD interface individually, also tested some of the features like Rotation and Mirroring, they worked with out any problem. > > What does "DSS2 ported on LDP board" mean? What source tree/branch did you use? He was using my DSS2 tree from http://www.bat.org/~tomba/git/linux-omap-dss.git (or some older version of it). > > > Now I am trying to get output both on TV and LCD simultaneously, > > > > I was not successful with my approach that I tried, like > > > > 1. Boot the kernel with the default LCD display > > 2. Then I enabled ntsc timings for TV, as PAL do not work on it. > > #echo ntsc > /sys/devices/platform/omapdss/display1/timings > > 3. Enabled TV > > # echo 1 > /sys/devices/platform/omapdss/display1/enable > > and did the common fb test.... > > But it did not seem to work. > > Its nice if someone has different working approach or can suggest me where I am going wrong in the above steps. > > Is this stuff documented somewhere? Like the difference > between DSS1 and DSS2? How the various layers and overlays > are supposed to work? What about the camera interface? It's documented in DSS2 documentation, Documentation/arm/OMAP/DSS. Of course knowledge of OMAP's display subsystem is required, and that information can be found from the OMAP TRM. I have no idea about the camera, it has nothing to do with DSS. Tomi