From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard
Date: Wed, 13 Jun 2012 17:09:08 -0600 [thread overview]
Message-ID: <4FD91D94.4040604@wwwdotorg.org> (raw)
In-Reply-To: <4FD91C2B.4010408@wwwdotorg.org>
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.
next prev parent reply other threads:[~2012-06-13 23:09 UTC|newest]
Thread overview: 54+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-13 16:19 [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 01/19] Add gpio_request() to asm-generic header Simon Glass
2012-09-21 19:30 ` Anatolij Gustschin
2012-09-27 20:58 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 02/19] fdt: Add debugging to fdtdec_get_int/addr() Simon Glass
2012-09-21 19:39 ` Anatolij Gustschin
2012-09-21 19:56 ` Anatolij Gustschin
2012-06-13 16:19 ` [U-Boot] [PATCH v2 03/19] fdt: Add function to look up a phandle's register address Simon Glass
2012-06-14 23:17 ` Stephen Warren
2012-07-11 5:10 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 04/19] fdt: Add header guard to fdtdec.h Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 05/19] tegra: Use const for pinmux_config_pingroup/table() Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 06/19] tegra: Add display support to funcmux Simon Glass
2012-06-14 23:24 ` Stephen Warren
2012-07-11 3:48 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 07/19] tegra: fdt: Add LCD definitions for Tegra Simon Glass
2012-06-14 23:32 ` Stephen Warren
2012-07-11 4:44 ` Simon Glass
2012-07-11 5:48 ` Thierry Reding
2012-07-12 8:21 ` Simon Glass
2012-07-12 8:40 ` Thierry Reding
2012-07-12 9:22 ` Alex Courbot
2012-06-13 16:19 ` [U-Boot] [PATCH v2 08/19] tegra: Add support for PWFM Simon Glass
2012-06-14 23:35 ` Stephen Warren
2012-07-11 4:45 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 09/19] tegra: Add SOC support for display/lcd Simon Glass
2012-06-14 23:39 ` Stephen Warren
[not found] ` <CAPnjgZ2bqPx+dHD9m+NuFrAbBeP1PQxHokLMwvD1-3OnC6ZHtg@mail.gmail.com>
2012-07-11 5:12 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 10/19] tegra: Add LCD driver Simon Glass
2012-06-14 23:45 ` Stephen Warren
2012-07-11 4:56 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 11/19] tegra: Add LCD support to Nvidia boards Simon Glass
2012-06-14 23:47 ` Stephen Warren
2012-07-11 4:58 ` Simon Glass
2012-07-23 20:25 ` Stephen Warren
2012-09-27 19:15 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 12/19] arm: Add control over cachability of memory regions Simon Glass
2012-06-14 23:49 ` Stephen Warren
2012-07-11 5:01 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 13/19] lcd: Add CONFIG_LCD_ALIGNMENT to select frame buffer alignment Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 14/19] lcd: Add support for flushing LCD fb from dcache after update Simon Glass
2012-06-14 23:51 ` Stephen Warren
2012-07-11 5:06 ` Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 15/19] tegra: Align LCD frame buffer to section boundary Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 16/19] tegra: Support control of cache settings for LCD Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 17/19] tegra: fdt: Add LCD definitions for Seaboard Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 18/19] lcd: Add CONSOLE_SCROLL_LINES option to speed console Simon Glass
2012-06-13 16:19 ` [U-Boot] [PATCH v2 19/19] tegra: Enable display/lcd support on Seaboard Simon Glass
2012-06-13 22:57 ` [U-Boot] [PATCH v2 0/19] tegra: Add display driver and LCD support for Seaboard Stephen Warren
2012-06-13 23:03 ` Stephen Warren
2012-06-13 23:09 ` Stephen Warren [this message]
2012-06-25 21:03 ` Tom Warren
2012-06-27 5:11 ` Simon Glass
2012-07-11 10:04 ` Simon Glass
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