From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Fri, 05 Oct 2012 13:51:46 -0600 Subject: [U-Boot] [PATCH v4 0/16] tegra: Add display driver and LCD support for Seaboard In-Reply-To: <506C704E.7000809@wwwdotorg.org> References: <1348793077-10126-1-git-send-email-sjg@chromium.org> <506C704E.7000809@wwwdotorg.org> Message-ID: <506F3A52.4050606@wwwdotorg.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 10/03/2012 11:05 AM, Stephen Warren wrote: > On 09/27/2012 06:44 PM, Simon Glass wrote: >> This series adds support for the Tegra2x's display peripheral. This >> supports the LCD display on Seaboard and we use this to enable console >> output in U-Boot on the LCD. ... > 2) The display works fine for cold boot, or hitting the physical reset > button, but when I execute "reset" at the U-Boot prompt, or "reboot" > within Linux, the display is messed up; it looks like the LCD isn't able > to sync to the timings sent by the display controller or something similar. > > Since this is slightly a corner case, it may be OK to fix it later (but > not much later; reboot is very useful to me.) A couple more points: BTW, I tried the same tests on Springbank which is basically Seaboard with a slightly different PCB layout, and didn't see this issue. That leads me to suspect some timing issue interacting with the panel, which I believe is different albeit theoretically compatible resolution/scan-timing wise. Second, I first applied Tom's Tegra30 patches and tested those, then applied your LCD series. The LCD series as-is breaks compilation of the Tegra30 support. I have no idea which order Tom might apply these in, but this is a heads-up there will be conflicts and one needs to be rebased on top of the other.