[U-Boot] [PATCH v4 0/16] tegra: Add display driver and LCD support for Seaboard

[Simon Glass]

Hi Stephen,

On Fri, Oct 5, 2012 at 12:51 PM, Stephen Warren <swarren at 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.
> ...
>> 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.

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.

Regards,
Simon