Simon/Stephen,
-----Original Message----- From: sjg@google.com [mailto:sjg@google.com] On Behalf Of Simon Glass Sent: Monday, October 08, 2012 1:06 PM To: Stephen Warren Cc: U-Boot Mailing List; Tom Warren Subject: Re: [PATCH v4 0/16] tegra: Add display driver and LCD support for Seaboard
Hi Stephen,
On Fri, Oct 5, 2012 at 12:51 PM, Stephen Warren swarren@wwwdotorg.org wrote:
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.
...
- 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.
OK. I wonder the panel does not get reset properly on Seaboard?
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.
OK, let's see what Tom wants to do on that one.
I'll have to wait to address this until I get back from HQ (next week, most likely).
Thanks,
Tom
Regards, Simon