From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Wed, 13 Jun 2012 17:03:07 -0600 Subject: [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard In-Reply-To: <4FD91AEA.6040400@wwwdotorg.org> References: <1339604395-6621-1-git-send-email-sjg@chromium.org> <4FD91AEA.6040400@wwwdotorg.org> Message-ID: <4FD91C2B.4010408@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 06/13/2012 04:57 PM, Stephen Warren wrote: > On 06/13/2012 10:19 AM, 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. > > Simon, > > This series doesn't apply to u-boot-tegra/master cleanly; there are a > couple trivial conflicts in arch/arm/cpu/armv7/tegra2/Makefile to > resolve, but I had to apply the final patch completely by hand. > > When I run the resultant binary, I see the LCD backlight turn on, but > the image on the LCD is wrong; it starts completely black without any > text showing, then slowly fills in to white/gray with many horizontal > and vertical black lines; I guess the LCD timing is incorrect - are > there multiple different LCD models? Note that I am using a real > Seaboard not a Springbank for this test. Oh, false alarm on this second point - the LCD is screwed up after using nvflash to flash the device, but when power-cycling it rather than just resetting it, the LCD works fine. I guess this means the driver is not initializing something that nvflash changed, and relying on a power-on default. I suppose it might not be worth fixing that given it works from cold power on.