From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pali =?ISO-8859-1?Q?Roh=E1r?= Date: Thu, 22 Mar 2012 01:58:02 -0700 (PDT) Subject: [U-Boot] [PATCH 05/14] cfb_console: Fix function console_scrollup In-Reply-To: <20120321235810.516e0842@wker> References: <1327415291-13260-1-git-send-email-pali.rohar@gmail.com> <2550759.V5HeO6NXvG@pali> <20120321235810.516e0842@wker> Message-ID: <23795705.qUUj7iecJ1@pali> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Wednesday 21 March 2012 23:58:10 Anatolij Gustschin wrote: > On Wed, 21 Mar 2012 19:50:34 +0100 > Pali Roh?r wrote: > ... > > > Hi, can you show me how to fix this? How to correctly use > > framebuffer? > > Hi, > > Not really. This would be a new project to rewrite U-Boot driver > for OMAP3 DSS. There is a driver under drivers/video/omap3_dss.c, > but it doesn't do what we need here. You can try to set > gdev.frameAdrs to point to another address range in RAM which is > not used by U-Boot. Then get OMAP3430 TRM and read DSS > documentation how to configure the display controller so that is > displays frame buffer data from this address range. Currently I do > not have time nor resources to rewrite the existing omap3_dss > driver. > > Thanks, > Anatolij Do you think that mapped address of framebuffer is only problem? Why then framebuffer output on n900 screen working without problem if I do NOT read framebuffer memory? Problem with garbaged display output seems happends only for read operations (console_scrollup, negation of pixels for cursor,...) but not for write-only operations (clear console, clear line, set black/white cursror, render fonsts...). I think if there is problem with address space, then garbaged screen should be also for framebuffer write operations... -- Pali Roh?r pali.rohar at gmail.com -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part. URL: