From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Babic Date: Fri, 22 Oct 2010 06:59:30 +0200 Subject: [U-Boot] [PATCH V2 3/4] MX51: Add video support In-Reply-To: References: <7629BC1F9408B943B87E2821E11D7E02120F13@zch01exm24.fsl.freescale.net> Message-ID: <4CC11A32.6080001@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 10/22/2010 05:54 AM, Liu Ying wrote: > Hello, Stefano, Hi Liu, > > It looks that your framebuffer patch supports one framebuffer only on IPU DI0. That is correct. As I stated in the commit message, the goal was to add LCD support to allow to display a splashscreen in u-boot. On the board I used to test, LCD is connected to DI0. > Could you please consider to add the support for framebuffer on IPU > DI1, as someone may design a board whose primary display device is > connected with IPU DI1. Well, now the driver is in mainline. Patches are welcome ! > And, it will be better if the following two points can be supported: > 1) Two framebuffers on IPU DI0 and DI1 can be support at the same > time, that is to say, users may see two pictures on two display > devices respectively. I understand this is a feature for Linux, but in u-boot ? Two splashscreens at the same time ? At the moment I do not know a board in u-boot managing two display and I do not see a reason. > 2) IPU DP module supports to combine two layers. The overlay layer can > have a smaller resolution than the bottom layer. And, color space > conversion, color key, global alpha and local alpha are supported by > DP, too. I 'm not sure if these features are really needed in u-boot > or not. All these features were dropped because they are not used in u-boot. We have no GUI programming, and only a small subset of commands to manage the display. I understand they are a bunch of important features in Linux, but in my understanding we need in u-boot only to show more or less fixed images. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-0 Fax: +49-8142-66989-80 Email: office at denx.de =====================================================================