[U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard

Simon Glass
2012-07-11T10:04:51Z

Hi Tom,

On Wed, Jun 27, 2012 at 7:11 AM, Simon Glass <sjg@chromium.org> wrote:

> Hi Tom,
>
> On Mon, Jun 25, 2012 at 2:03 PM, Tom Warren <TWarren@nvidia.com> wrote:
>
>> Simon,
>>
>> > -----Original Message-----
>> > From: Stephen Warren [mailto:swarren at wwwdotorg.org]
>> > Sent: Wednesday, June 13, 2012 3:58 PM
>> > To: Simon Glass
>> > Cc: U-Boot Mailing List; Tom Warren
>> > Subject: Re: [PATCH v2 0/19] tegra: Add display driver and LCD support
>> for
>> > Seaboard
>> >
>> > 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.
>>
>> I don't see Stephen's LCD problems, but I don't see clear text on my
>> Seaboard T20-A03 dev system LCD, either. The text is blurred / almost
>> unreadable, especially the last line (cmd prompt). I don't know if it's the
>> scrolling change or the cache change, as previous incarnations (in the
>> Google repo, at least) were just fine. Power-cycling doesn't fix it. I
>> didn't test Ventana or Harmony.
>>
>> Please update the patchset so it (a) applies to u-boot-tegra/master
>> and/or /next, and (b) fixes the text corruption on the LCD.
>>
>
> Yes will do.
>
> I am not sure about the text corruption as I didn't see that, but perhaps
> the rebase has caused something to change. Will take a look.
>

I am still not seeing any text corruption here, nor Stephen's LCD problems.
Are you running with the cache on or off? (not that it should matter - have
tested both).

Regards,
Simon

>
> Regards
> Simon
>
>
>>
>> Tom
>> --
>> nvpublic
>>
>
>