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

Tom Warren
2012-06-25T21:03:57Z

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.

Tom
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nvpublic