On 06/13/2012 05:03 PM, Stephen Warren wrote: > 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.
Oops, there is a problem - executing "reset" in U-Boot, or "reboot" from the kernel (one without any display support at least; mainline Linux) will get into the "bad LCD" state too. So, I guess there is something that needs to be fixed. Sorry for the back-to-back emails. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
