From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mike Frysinger Date: Thu, 19 Jul 2012 12:51:15 -0400 Subject: [U-Boot] [PATCH] video: cfb_console: flush dcache for frame buffer in DRAM In-Reply-To: <201207191749.20459.marek.vasut@gmail.com> References: <1335625447-24189-1-git-send-email-agust@denx.de> <201207190926.25261.vapier@gentoo.org> <201207191749.20459.marek.vasut@gmail.com> Message-ID: <201207191251.16660.vapier@gentoo.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Thursday 19 July 2012 11:49:20 Marek Vasut wrote: > Dear Mike Frysinger, > > On Tuesday 05 June 2012 03:28:40 Anatolij Gustschin wrote: > > > On Sat, 28 Apr 2012 17:04:07 +0200 Anatolij Gustschin wrote: > > > > Data cache flushing is required for frame buffer in RAM to fix the > > > > distorted console text output. Currently this text distortion is > > > > observed with cfb on beageboard and N900 when running with data > > > > cache enabled. > > > > > > Applied to u-boot-video/master after rebasing and fixing commit log. > > > > this patch is still wrong for the reasons i cited earlier. your cache > > functions are broken, not the driver. > > The cache stuff is completely borked on ARM, I have no idea why people > enable it. in this case, it's making it worse for other arches, and setting bad precedents in the process i think Simon's solution is a good middle ground: lcd: Add support for flushing LCD fb from dcache after update -mike -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 836 bytes Desc: This is a digitally signed message part. URL: